Do you think any Motorcycle YTX14-BS lead-acid battery would suffice? You could potentially up the Ah (to last longer) and would probably be cheaper too.
@santesandroperruzza61832 жыл бұрын
where can i buy the replacement battery?
@amhandweiser433 жыл бұрын
Good video, but please invert the order of disconnecting/connecting the poles. Always disconnect first the ground (negative) pole first, then the positive (and avoid it contacting any metal part, for your main battery remains connected). Reconnect poles starting with the positive.
@carbuying3 жыл бұрын
you got it
@markvincent4521 Жыл бұрын
The Owners Manual says the disconnect other way (p.348).
@pyroretired Жыл бұрын
Came here to say this...I was cringing as that metal wrench was moving around on the postive terminal... for example from owner's manual for the starter battery on 2014 E250. page 359 "you first remove the negative terminal clamp and then the positive terminal clamp..." You otherwise could zap yourself pretty good and create some sparks if the wrench touches the frame as you complete the circuit... granted the the battery in the trunk is pretty small...you can still damage some sensitive stuff.
@matteroffact69977 ай бұрын
I am trying to understand why disconnect the main battery before replacing auxilary battery..im trying to learn my husband has no idea😮
@davidhall27853 жыл бұрын
Thanks for your very informative video on proper way to replace the auxiliary battery in a Mercedes E-350. Following your instructions made the change less stressful than I anticipated. 5 stars!!
@911Mitul4 жыл бұрын
Had the same error on my E220 CDI today, your video was brilliant thanks for the advice.
@carbuying4 жыл бұрын
Glad it helped thanks for watching Mitul
@rauldiaz8035 Жыл бұрын
I had the same problem, in E220cdi but when i change auxiliar y batterie tthe system eco dont change yelow from Green. Can I do?
@911Mitul Жыл бұрын
@Raul Diaz Go for a long drive constant say 30mins at a highway. Don't have air-conditioning on. The alternator will kick in then the stop start will work. Check your eco switch is on. The yellow light needs some juice before it kicks in and goes Green at a constant drive.
@rauldiaz8035 Жыл бұрын
I Drive in Highway to 120km/h and air conditionee off during 30 min but eco dont change to Green
@railroad6601 Жыл бұрын
This is the same battery (14-BS) as in the 2015 Mercedes GL450. Good video with good information and very detailed.
@frankmartinez68883 жыл бұрын
Thank You! First you helped me with my key fob... and now this! Your step by step guide is awesome! Thank you!
@frankmartinez68883 жыл бұрын
FYI - the Bosch Battery you have listed from Amazon is a perfect match and fit. Just changed it out this morning.. even has the side vapor plug thing...
@carbuying3 жыл бұрын
You're welcome!
@amurray72242 жыл бұрын
Would love to watch that key video having issues with mine now also.
@TruCrimeQueen2 жыл бұрын
@@carbuying I just ordered the MB battery in your description for my 2014 E350. That is the correct one, right?
@moisesperez46597 ай бұрын
Just changed the auxiliary battery on my 2016 E350. I guess it’s a newer model battery. Got the same battery (aux14)from autozone but this one has the correct bolt holes and a vent. So if you have a Mercedes A000 982 93 08 this is a drop in fit.Thanks again for the video.
@fxpthl4 жыл бұрын
Just wanted to thank you for this great video! I did this replacement using it and it was a "slam dunk" ! The replacement battery was purchased at an AutoZone store and included the extra hardware required to complete the install easily. The did charge me a refundable feel for the "core charge" but got it back when I turned in the old battery. Once again, thanks for your help and the savings of Big $ if it had be done by a dealer!!!!
@carbuying4 жыл бұрын
Glad it helped congratulations on fixing it yourself Edward!
@fxpthl4 жыл бұрын
carbuyingtipscom yes i deed and saved Big Bucks from what the MB service folks wanted!!!!!
@jocallis82444 жыл бұрын
Edward was model did you have?
@posterlion4 жыл бұрын
Remove negative cable first. Always! Why does no one know this?
@carbuying4 жыл бұрын
For those of us who are careful, it's a moto point does not matter which one you undo first. I you remove the ground cable first, what it you accidentally drop your wrench and it shorts the positive post of the battery to the ground? Same short circuit problem.
@AustinTXProgrammer3 жыл бұрын
@@carbuying Procedures exist so that careful is less important. Eventually we will all make a mistake. If the wrench is on the positive terminal it is going to spark if it touches anything metal. If it's on the negative terminal, the only danger point is the positive terminal. Once the negative terminal is disconnected, this changes, and then the only dangerous point will be the negative terminal.
@TheGalifrey3 жыл бұрын
@@AustinTXProgrammer Exactly! It's not a moot point when your dealing with the amount of stored energy in one of those, even worse when your dealing with a truck/bus battery or 29kwh of RV battery!
@garyt1233 жыл бұрын
Always the negative first. No argument. You used to be able to do this either way, on vehicles with no ECU (so basically most anything before 1989/1990), and no harm would be done (except maybe a few pretty sparks). Since then auto-electrics has become auto-electronics and this is a whole different ball game. Not only does removing the Negative terminal first reduce the posibility of shorting but also prevents the voltage in various large capacitors inside the myriad of onboard computers from doing nasty things to memory circuits and CPU's via all those NPN type transistors and other circuits. That E350 Mercedes has 9 (yes, nine!) computer control modules in the transmission alone, assuming its not the 4x4 version (which I think has two or three additional modules). Each door has 2 OBC's (Onboard Computers), so that's 8 in the doors. When you start looking at ECU's, Airbags, Audio, Auxilary systems, Starting & Charging, etc. you quickly discover 40-50 OBC's and ECU's all around the car. All those ECU's and other onboard computers are designed around Low Side Switching, this means they are ground referenced and the entire design is layed out in such a way that the only way to guarantee not damaging/corrupting anything is by 'switching' (ie. removing) on the Negative terminal first, and reconnecting Negative last. This is NO joke and is NOT optional; unless of course you really want to shell out a couple of hundred dollars, and up to several thousand dollars, on replacing one or multiple failed ECU's or other OBC's. Sure you could get lucky, but why take the risk?
@garyt1233 жыл бұрын
@@carbuying Totally wrong I'm afraid. Thanks for the great video BTW, there is way to little regarding auxiliary batteries, so thanks for taking the time! (Just that one error though)
@hanifamenen10822 жыл бұрын
you said you'd mention whether it's absolutely necessary to change this battery when such a warning message comes up. Is it? Could you tell me why too - whether yes or no. Thank-you. Good video!
@davidclarke28228 ай бұрын
just changed my battery in '14 E 550-works great thanks for help!!
@dantethewiseone43728 ай бұрын
Learned something new today.... Great job ... straight outta Kenya 🇰🇪🇰🇪🇰🇪🇰🇪
@wildavis10109 ай бұрын
Just got gifted a E30 MBZ. Thanks for the informative video.
@busigqasana59583 жыл бұрын
Hallo Sir My car Mercedes Benz Model CLA 200 year 2016 is showing me the same prob of Auxillary Battery Malfunction. Plesse tell me where is it in the car??? Your videos are really appreciated
@cedricspencer32083 жыл бұрын
Does changing the Battery in E350 2011 affect electrical components in anyway, also how many cold cranks should I look for when purchasing a battery for this car ?
@carbuying3 жыл бұрын
It's always a good idea to provide backup power when changing the battery. As far as CCA, you need to look that up in your manual.
@ulvenkommer1513 жыл бұрын
Thanks, great info 👍 Now I know why the start/stop function became irregular some time ago. Just recentely the display info appeared. Got a 2014 C207.
@carbuying3 жыл бұрын
Glad it helped
@donparadise31574 ай бұрын
Interstate Battery carries these batteries and will even replace
@lannamonday28472 жыл бұрын
Thanks for doing this video! It was exactly what I needed to replace my own battery. :)
@TruCrimeQueen2 жыл бұрын
Did you order the Mercedes’ battery in the description?
@thresiapilate83343 жыл бұрын
I replaced the auxiliary battery and still will not start. Please give me a recommendation or suggestions. Thank you 🙏🏾
@carbuying3 жыл бұрын
Are you talking about the car not starting? The auxiliary battery has nothing to do with the car starting it is the main battery that deals with the car starting.
@mewiththeface67173 жыл бұрын
Duracell 12v 14ah battery has the same exact measurements with 20 more cranking amps. It would work too
@carbuying3 жыл бұрын
most likely yes
@tomburke46523 жыл бұрын
They don't call this 212 Engine. That's the chassis w212. 2013 and up Engine 276 and older ones called 272. Same body style.
@carbuying3 жыл бұрын
No one ever refers to their Mercedes by the engine even the forums the categories are subdivided by W204, W212, W213, etc.
@marklutes3 жыл бұрын
@@carbuying You're both saying the same thing. He's just pointing out that at 1:57 in the video you say "...otherwise known as the W212 engine". Slip of the tongue, I'm sure. Good video - thanks for posting it. Very timely for me!
@scricinel77 Жыл бұрын
Auxiliary battery only seens to last around a year before needing to be changed. Is there a voltage regulator somewhere? E350 CDI BLUEEFFICIENCY
@jeffreyjames28122 жыл бұрын
Hello. My 2014 mb e350 screen doesn't work. Radio works just fine. Any help? Thanks
@carbuying2 жыл бұрын
Did you ever get your screen issue resolved? Usually holding down the center button for 10 seconds will reset it and bring it back to life.
@lisawalker71323 жыл бұрын
Thanks so much, because I panic 😱 this morning!!!…. Thanks again… I feel like I can do it myself…. Smiles
@gkendric4 жыл бұрын
I will check but would love to see a troubleshooting video involving the attached battery relay as it can also fail and would love to see steps to test whether it's the battery or the relay and describe the function of this relay. I have this error message and when the error is displayed a check of the voltage from each relay terminal to battery negative yields that there is a voltage difference. I suspect the battery is not holding the charge anymore when the error is present but I'm wondering how to determine if it's a bad battery relay.
@frenberg4 жыл бұрын
Hey I have the same problem I think. Testing the aux battery is giving 13.0V so I assume it’s probably something else ... likely the relay or something else. Would be sweet to not have to buy everything and do the old trial and error approach :/
@carbuying4 жыл бұрын
So it sounds like the system is not seeing the voltage. this is one of those cases where you really need the service manual to show wiring diagrams to see all inputs to the ECM, or to know what else it looks at to determine the voltage is low, because it should not read low voltage when the battery is at 12V or above. So maybe it's the relay, maybe something else in the chain.
@gkendric4 жыл бұрын
@@frenberg In my case it was the auxiliary battery and I replaced it with one that was actually made in the USA from Battery's Plus, a Duracell and that corrected the problem. A test of the battery revealed that the battery was defective and needed replaced, an easy fix.
@joe_notjo51034 жыл бұрын
Thanks for the video, saved me a trip to the dealership 👍🏻
@carbuying4 жыл бұрын
Glad it helped Joe!
@kidjoe82544 жыл бұрын
The question guys if the exility battery malfunction pops up later on if you do not replace it will it kill the battery of your vehicle the one you keep in the front engine will it cause it to die? Any fee back would be grate
@carbuying4 жыл бұрын
The 2 batteries are likely isolated. Your car still starts ok with the auxiliary battery message, so this means the aux battery is not negatively affecting the main battery.
@kidjoe82544 жыл бұрын
@@carbuying thanks I needed a new battery
@aulestiastudio24 күн бұрын
Hey, wrong information. One suppose to disconnect the negative first and then the positive. The reverse when installing the battery.
@sigonyelanandipha19974 ай бұрын
Im stressed because my C200 shows that i don't know who can help with it ordering it may be east but who ?
@Dic3.20 Жыл бұрын
hello, I also know an E class from 2014, with a 2.0 petrol+CNG engine, the same message appeared on the dashboard, do you know where that 12 volt battery is?
@kingofasia62782 жыл бұрын
It’s more to this battery.. If U Ignore It And Don’t Change It.. The red battery icon shows up on your dash board and your car would run out of powers and will shut down your car and u will have to jump start it to get it to start again.. I bought a new front battery and when I was driving some how it was draining the battery.. I thought it was a alternator but it wasn’t.. but it does act like it was a alternator because when I start the car it and when u start driving the red battery icon came bak on and it drain my battery and then the car steering wheels would turn hard and the car would stop and won’t start like the new front battery was dead.. and all icons cames on.. I will try to change the auxiliary battery to see if it will fix the problems
@TheGalifrey3 жыл бұрын
Thanks for the video, am replacing this exact battery at the weekend!
@carbuying3 жыл бұрын
Good luck!
@RDSZ4 жыл бұрын
My e350 warning light came on,at 25k ,the dealer replaced it under warranty a now at 32k the light came back on. I wonder if the dealer batteries are garbage. Thanks for video.
@carbuying4 жыл бұрын
You aux battery should have a warranty, does it? We have put about 7,000 mile son this car since the battery change for the aux battery, and so far so good.
@irq001 Жыл бұрын
I have a 2013 E400 Hybrid . Does the process to replace the aux battery remains the same , this model being the W212 too ?
@cyrealsekatane8834 Жыл бұрын
Very informative 👏
@carbuying Жыл бұрын
Thanks Glad you liked it
@ronke20843 жыл бұрын
How long can you drive with the auxiliary battery malfunction warning?
@carbuying3 жыл бұрын
We drove 2 weeks with it.
@terrencecarlin37663 жыл бұрын
Great video! I have a 2013 GLK 350 4Matic. My message went away but the ECO is still not functioning. What next? Someone suggested changing the Aux battery relay....
@carbuying3 жыл бұрын
Not sure, sometimes we have heard it can take a day for the problem to correct itself. Maybe wait a few days before going to replace any relays
@alexgonzalez8663 жыл бұрын
I had the same thing happened when my aux battery went out and when replace eco still didn't work everything else did. Just replace main battery and eco work again maybe that will help
@samuelrahimic7929 Жыл бұрын
Would the auxiliary battery some how affect the fuel gauge? My aux battery light came on and after a little while my gas guage is showing its empty
@rauldiaz8035 Жыл бұрын
I had the same problem in E 220Cdi but the system eco dont change from yelow to Green. What can I do ?
@cencereechols771619 күн бұрын
Where did you get the battery kit?
@MrMarcuscostello3 жыл бұрын
Thanks for he video. Any thoughts on why my stop start would not work again after replacing the battery?
@carbuying3 жыл бұрын
You mean the car's start stop button to turn on the car? That should not be connected to the auxiliary battery
@MrMarcuscostello3 жыл бұрын
@@carbuying yes you are right. I should have said the ECO function. It doesn't kick in anymore.
@holikoff3 жыл бұрын
@@MrMarcuscostello I had the same issue back in summer where the stop/start function stopped working and ECO would not turn on. I got the main battery checked at autozone and was told the battery went bad so I replaced it. After 1 or 2 days the ECO and start/stop started kicking in! So go get your main battery checked. Now though I’m getting the “auxiliary battery malfunction” error message and the “stop/star” stopped working again including the “hold” function where you hard press the brakes to hold the car at traffic lights. So Initially I thought “stop/start” is fully dependent on the main battery, but it looks like not. ECO and start/stop rely on both batteries to be fully functioning!?
@garyt1233 жыл бұрын
@@MrMarcuscostello @Shukhrat is right. You should look to your main battery. The charging circuit is routed from the alternator to the main battery and then to the auxiliary battery. There is a voltage regulator between the two to prevent the aux. battery draining the main battery and potentially preventing starting. If the auxiliary battery is faulty you get the auxiliary battery malfunction error, if the ECO function stays yellow and rarely, or never, goes green (with no Aux. Battery warning) then its your main battery or a combination of the two.
@reyetom13 жыл бұрын
I changed the battery for a new one but the warning still showing up. What can I do ? Thanks for your help!!
@carbuying3 жыл бұрын
It should go away on its own right away. Check to make sure the battery voltage is over 12V. Your model might need to have the error message reset using your OBDII port.
@mkhan890221 күн бұрын
I have a 2016 GLA250. The automatic start/stop function caused my car to shut down twice this week. So when I came to a stop, engine shuts off automatically, and when it tries to turn back on it can’t and my screen went black & put the car in neutral. No message came up! I think the auxiliary battery needs to be changed. Any input anyone??!
@FranciscoMartinez-bu4hc4 жыл бұрын
How many auxiliary batteries does a 2014 ML350 have? I replaced the one I found by the spare tire with a Duracell (dura12-1.3f) 12V. I also checked the main battery area under the passenger seat but there wasn’t one their. I’m still getting the same message of aux battery malfunction. Do the Duracell batteries come uncharged?
@carbuying4 жыл бұрын
We are not sure on this model. Try the MBForums find your model car on the forum and ask you question there. We find lots of answers there all the time, there is always someone who knows the answer.
@pdthfc2 жыл бұрын
I have replaced my battery over a week ago and done in excess of 200 miles but the eco light hasn't changed colour and no box around it as it was before any ideas?
@MegaFiremech3 жыл бұрын
just a word of caution to everyone always always remove the negative cable first and reconnect it last
@splabber78462 жыл бұрын
Yes, this is the first rule of working on a vehicle battery. Rule 2 is to use an insulated tool wherever possible.
@mptrader1620 Жыл бұрын
So true. I come across so many videos where the positive is removed first. Just do not get it.
@topformautosales21034 жыл бұрын
Will the auxiliary battery malfunction prompt cause the check engine light to pop up?
@carbuying4 жыл бұрын
In this video at 0:14 you can see the main check engine light is off, but the Auxiliary Battery warning is in the display. We don't know for sure if it will turn on the check engine light in other cars.
@nyblanco3 жыл бұрын
I purchased a replacement battery for my 2016 e400 model myself from the dealership and my ECO works once in a blue moon out of nowhere... why??
@carbuying3 жыл бұрын
Your auxiliary battery might be going bad, check that battery out too.
@machinetradereurope78532 жыл бұрын
iS THIS THE SAME type for the 2012 model also?
@IrfaanThian Жыл бұрын
followed exactly for my gla200 but still has the error msg . 😢
@snarestud9403 жыл бұрын
On my 2014 E350 luxury, I no longer have the eco-symbol on the dashboard. But the light still turns green on the instrument panel in the center. Do you know what the problem is?
@carbuying3 жыл бұрын
It might still be your auxiliary battery. If that battery voltage drops too low or it does not hold a charge, then it won't turn on the ECO mode.
@snarestud9403 жыл бұрын
@@carbuying the brake hold still works though. Is that normal?
@jamesreilly14312 жыл бұрын
Have ML320 SUV Main battery and Auxilliary under front passenger seat. Pain to replace
@carbuying2 жыл бұрын
Mercedes can't make up their mind where to put these batteries
@PASSNAGER61 Жыл бұрын
Can someone tell me where can I find the auxiliary battery on my 2011E350 Mercedes
@yoshita46533 жыл бұрын
Good explanation. But I have a problem when shifting gear to reverse for automatic transmission. It doesn't activate sometimes. If someone can help, please.
@carbuying3 жыл бұрын
Not sure that is affected by the auxiliary battery
@deth56193 жыл бұрын
There is a reset process for the transmission in the w212 mercedes. Have you tried that?
@khadijahjackson23942 жыл бұрын
I have the same issue. How do you do the transmission reset?
@chasewang64833 жыл бұрын
I’m having the same problem with my 2016 e350 now I’m going to change it myself. Thank you so much! I think I need to change my main battery too, is it basically the same process? And is there any computer codes?
@carbuying3 жыл бұрын
No computer codes to change, when you change the auxiliary battery, the problem goes away on its own. Have you completed your repair and was it successful?
@Auron3802 жыл бұрын
I just replaced my auxiliary battery last week. It lasted exactly a week before failing again. Is there any advice you might have for this?
@carbuying2 жыл бұрын
Maybe you got a bum battery, or maybe it wa snot connected tight enough and so not charging.
@alexalox741 Жыл бұрын
How can I know which is bad in my car????? 2010 w212 E350
@jasonb41962 жыл бұрын
Curious to whether or not the main battery needs to be disconnected while doing the swap on the Aux Battery? Also my Eco light for my stop start is completely gone off the dash. Yes I have stop start I have the build sheet for my car from the dealership using my Vin# also have the button beside the parking sensor button yes the light goes green or off when I hit the button just the light on the button nothing on the dash as stated above. I'm hoping my Aux Battery will make my start stop active again. I also just bought a brand new Optima Yellow Top today.
@railroad6601 Жыл бұрын
I changed my aux battery, no need to touch the main battery.
@jhonatanmiranda52893 жыл бұрын
Do i need to replace it? Or it should be fine?
@carbuying3 жыл бұрын
Yes if the system tells you the battery is bad, you should replace it, provided the issue is not with one of the other components.
@jonbrown2514 Жыл бұрын
Can this battery not just be taken off and charged?
@reginaldsmallhausen8871Ай бұрын
NEVER NEVER undo the positive side first!!! The whole car is connected to the negative. If you touch the tool to the car you will short the battery out and there will be a big flash! Always undo NEGATIVE FIRST AND CONNECT NEGATIVE LAST!!
@MegaAlbeagle10 ай бұрын
How about I changed the auxiliary battery and after 1 month message came back and doesn’t go away the faulty message even though in changed it
@joeduffy33092 ай бұрын
the battery needs to be coded
@junbarz3613 жыл бұрын
Where's the auxiliary battery on 2014 SL550 located at?
@carbuying3 жыл бұрын
Don't know on this one, try the Mercedes MBWorld.org Forums
@Zera11714 жыл бұрын
No need to disconnect the main battery before replacing aux battery? Thanks
@carbuying4 жыл бұрын
No need to disconnect the main battery.
@Zera11714 жыл бұрын
carbuyingtipscom replaced it myself, thanks for the helpful video!
@oscgigi08083 жыл бұрын
I have the same problem and Mercedes saying that I have to reprogram The battery so the Eco feature can work again with Is that true or they just want to charge extra money?
@carbuying3 жыл бұрын
No you should not have to reprogram anything. Ours worked when we changed the battery. Might take a day for the error to disappear
@renatopesce44352 жыл бұрын
Io ho una mercedes cls 350 x218 2013 shotinbrak dove si trova la batteria??
@gtonagtona3 жыл бұрын
hello, after replacing auxiliary and main battery of my glk 220, the message of malfunction remain. can i replace the system or i need star diagnosys? thanks
@carbuying3 жыл бұрын
Give it a day or so, when we changed ours, the problem went away over night, or driving a few miles to get the battery back up to charge. You can also try clearing code, and hopefully it does not come back up, and hopefully you did not buy a faulty auxiliary battery
@gtonagtona3 жыл бұрын
@@carbuying thanks,i think that i have ti go in mb service.
@gtonagtona3 жыл бұрын
@@carbuying hello,mb service has replaced the auxiliary battery because are default. thank you
@cprflorida2 жыл бұрын
My aux battery display came on after the car sat for a few months and needed the main battery to be charged. Does this really mean that the aux battery needs replacement since the error happened after the need to recharge main battery
@carbuying2 жыл бұрын
Unknown. The condition triggers when the car thinks the aux battery is not holding proper voltage
@m4sta2k4 жыл бұрын
I have the same car, is it possible to connect subwoofer amplifier (150w) to this battery or do I have to do it trough the main one in the front? I guess they are connected together or? Anybody? Thanks
@carbuying4 жыл бұрын
I would recommend connecting to the main battery.. Don't connect something as complex as audio transients and subwoofer amp power draws off this tiny battery. You don't want this type of transient voltage on a battery where sensitive electronic systems are powered from.
@Jordanalani Жыл бұрын
Where i find this type of battery in Sweden if i dont want to buy the original one from mercedes? I have an E220 CDI from 2014
@mrjehad843 жыл бұрын
Hello, thank you for your video, I had the same error ( Auxiliary battery malfunction ) on my E220 CDI, It happened for few days and then it disappeared by itself.. Do you think the battery has recharged itself ? or the error will come back again and I need to replace it ? Thanks
@carbuying3 жыл бұрын
Likely you are starting to see the tip of the iceberg. I hope it does not come back, but you can expect it to.
@halimhoussaini42242 жыл бұрын
هو بمثابة إنذار وربما سيعود من جديد واذا رجع هنا وجب عليك استبدال البطارية
@thomashansen387511 ай бұрын
First remove Minus,than Plus.After Install first plus than minus.
@ETPAK3 жыл бұрын
can anyone tells me where is this battery in 07 S550. It is not behind left dash fuse box.
@carbuying3 жыл бұрын
Did you check the trunk?
@ETPAK3 жыл бұрын
@@carbuying no i found it. It is behind left front wheel fander cover. Real crazy...
@bianbian4284 жыл бұрын
Thank you so much!!! I'm doing this tomorrow.
@carbuying4 жыл бұрын
Let us know how it works out for you? Do you have ECO mode also?
@MyGoose24 Жыл бұрын
My faux battery just came on will.this stop the car
@marcwoodruff25714 жыл бұрын
I took mine out and it read 12.7 volts, 79%. I had this replaced at the dealership in 04/2018 and getting the Auxillary Malfunction message? Should I replace it?
@carbuying4 жыл бұрын
Sometimes they can read good voltage but have issues. You can have Autozone check the battery for you with their machine that runs it though tests and tells you if you need a new battery.
@carscloseup2 жыл бұрын
Always disconnect the negative terminal first! When mounting, the positive terminal has to be mounted first! I’m surprised that you are doing it wrong?!
@carbuying2 жыл бұрын
Most people that are giving out this advice don't understand why they're just repeating what they've heard other people say. Electrically it doesn't matter at all which one you undo first. But for the overabundance of safety, some people prefer to undo the ground terminal first, so that you no longer have a path to ground from the battery. This way when you then go to unscrew the positive terminal, in the unbelievably unlikely event that your clumsiest day ever and your using the wrong tool, and your tool happens to short against a metal part of the engine that is connected to the ground, you won't get any kind of shock or spark or whatever off of a 12 Volt battery. But people who act like this guy is falling if you don't pull off the negative wire first or just plain wrong 99.99% of the time. I can tell you in my entire adult life I've never accidentally shorted a wrench from the battery terminals to any part of the engine because I am careful I watch what I'm doing I stay focused.
@carscloseup2 жыл бұрын
@@carbuying I’m not repeating what other people say, i’m a skilled mechanic with 40+ years of experience, so….And you’re saying there won’t be any sparks flying if you short the positive terminal to ground?? In your video you are putting a bag on the positive terminal to avoid a short? If you start with negative this would not be necessary….So you’re are really not making sense..
@carbuying2 жыл бұрын
@@carscloseup No you are misrepresenting what I said, I was quite specific. Nowhere did I say that "there won’t be any sparks flying if you short the positive terminal to ground", so I don't know how you concocted that up. What said was I am too careful and never in my life have I shorted the positive terminal of a battery to ground or nay metal part on the car. You can also place the caps on the terminal before you lift out the battery, ending any disputes about shorting.
@carscloseup2 жыл бұрын
@@carbuying Allright, but still; you’re doing it in the wrong order…I can’t believe how hard it is to understand; you don’t have to “use the right tool”, to “do not have the clumsiest day” or watch out for grounding the positive terminal, which there’s potential 1000 ways to do, but with the negative off first there’s ZERO…..
@404notfound.....2 жыл бұрын
@@carscloseup A good rule of thumb when disconnecting the battery negative off 1st negative on last... simple!!
@tigerali73 жыл бұрын
Anyone can help me locat 2017 e300 auxiliary battery location
@carbuying3 жыл бұрын
If it's not in the rear back of trunk like we showed in this video, try on the left side of the dashboard inside the little removable panel, or under the floor mats under the dash on passenger side. If not there, maybe you don't have one.
@cprflorida2 жыл бұрын
Perhaps, I can also attach the battery chargiing kit to the aux battery and hope that it also is charged, since the main battery is connected thruough the alternator, and by running down the main batterry, it ran down the aux battery, since that battery was replaced 2 years ago.
@cprflorida2 жыл бұрын
well I tried to charge at 2 amps over night and still with aux battery malfunction. I don't think it is bad, because it still shows tire pressure and other things. So how do I get rid of the error light,
@carbuying2 жыл бұрын
The error light goes away on its own when you install a new battery. It probably still senses somethng wrong with the aux battery
@kaanyakit77613 жыл бұрын
Hi . I have 2014 E class and having the same warning recently but I noticed that my Eco button sometimes comes on and than goes off againg. Also intelegent light system stops working againg its on and off. Is this normal when you have " Auxiliary Battery Multifunction " on display? Thanks
@carbuying3 жыл бұрын
yes, it means the aux battery is ready to go.
@cprflorida2 жыл бұрын
So if it came on as a result of running the engine battery dead, how do you get rid of the light indicating malfunction when it is not malfunctioning as my eco works, hold break works and air pressure works. So how do I get rid of the light
@carbuying2 жыл бұрын
Chances are the battery is about to go, the ECO mode might still work, but I bet in a few weeks it might not work
@megant.bearce5754 жыл бұрын
Where is the auxiliary battery in the 2014 350E Wagon
@carbuying4 жыл бұрын
Don't know, you'll have to go looking for it, try the trunk first like we showed, then try under the front passenger seat, then under back passenger seat, then in the left side of the dashboard like we showed. Mercedes puts them everywhere and anywhere.
@karlozzperez84993 жыл бұрын
I can not find the auxiliary battery of a mercedes benz model E 350 year 2010, can you help me locate it please
@carbuying3 жыл бұрын
Autozone should be able to cross reference a battery for you, unless you want to go to the Mercedes dealer and pay $250.
@deriklongokailer2 жыл бұрын
Nice video!
@athulakaluarachchi22823 жыл бұрын
how to reset malfunction please
@carbuying3 жыл бұрын
It should reset on its own after the repair. If not, wait a day and see if it clears, but no reset is needed.
@tigerali73 жыл бұрын
Anyone knows where is the Auxiliary battery location on 2017 E 300. Thank you!
@joshmyers22123 жыл бұрын
The auxiliary battery isn’t in certain models, it’s an old message from previous years models. Double check but this is the case for my e220d 2016 👍
@carbuying3 жыл бұрын
We were sure we had one on the 2013 C250 and after 2 hours of searching realized there was not one. If you can't find it and on the forums search for it, then there may not be one.
@aymanawwad31684 жыл бұрын
Hello, I just replaced the auxiliary batter form E350 but still getting the message of low auxiliary battery ? Should I reset the computer and how ? 2006 Mercedes E350
@carbuying4 жыл бұрын
I would recheck the voltage of the auxiliary battery with the engine on. Also it can sometimes take a day or 2 for the message to go away. Do you still have the problem?
@aymanawwad31684 жыл бұрын
carbuyingtipscom thank you for reply, i just did that and got 14.1V but am still getting the same low battery
@jeffostroff4 жыл бұрын
@@aymanawwad3168 Have you tested your ECO function and does it work? Did you test the brake hold function as shown starting at 1:10 in this video? If those are working it could mean your engine fault code needs to be reset using an OBDII reader, although with most cars this message should clear as soon as everything is working.
@jonathanwilkinson2424 жыл бұрын
hey! does the auxiliary battery help start the car?
@carbuying3 жыл бұрын
No, only the main battery starts the car
@streetmaster2006 Жыл бұрын
Thanks man!
@emmanuelocran52 Жыл бұрын
I have changed my own but still appear on the dashboard saying auxiliary battery malfunction, I checked the battery it’s ok too what will the problem
@2000markar Жыл бұрын
same issue with mine. changed still getting error message
@emmanuelocran52 Жыл бұрын
@@2000markar so what did you do?
@leszekmajewski41323 жыл бұрын
Where is Auxilinary Battery in Mercedes CSL550 2010?
@carbuying3 жыл бұрын
Not sure, try the Mercedes Benz forums, someone there will know
@johnbates6063 жыл бұрын
I’m pretty sure it is in a horrible place check drivers side behind centre console. Under a cover
@stevewasilow55562 жыл бұрын
Thanks for the info. I just picked up a 2011 E350 with 125k miles. I’ve had it a week and just got the aux bat msg. I’ve always heard the older MB were money pits, but couldn’t resist once I test drove. How many miles on yours? Have you had good experience?
@HOOK_NOSE_JEW2 жыл бұрын
I have 2011 I don't have the start stop feature....do we still have this aux battery?
@BionicRusty Жыл бұрын
I owned an ‘08, E350 Coupe, BlueEfficiency and it was probably the best car I’ve ever owned. It had about 90k miles when I sold it. Certainly not a money pit. Yes, it had some wear and tear/maintenance done to it but it was so good that I’ve just bought an E220d Estate AMG Sport Night Edition as my ‘retirement car’. I hope you’re enjoying yours.
@justwondering1967 Жыл бұрын
@@HOOK_NOSE_JEW yeah me too, I am wondering the same thing now.
@teoweeli2 жыл бұрын
what does the aux battery do ?
@carbuying2 жыл бұрын
among other things in red light eco mode, the gas motor shuts off, so this battery keeps the electronics alive.
@bobbygicharu26282 жыл бұрын
Slight correction the w212 is not an engine but a chassis
@jamesstephenson77202 жыл бұрын
Where is the aux battery on a 2007 mercades Benz c230
@jamesstephenson77202 жыл бұрын
Help me please
@jamesabarza65592 жыл бұрын
thank you, excelente video
@carbuying2 жыл бұрын
Glad you liked it!
@donruth1073 Жыл бұрын
Should I disconnect the main battery before working on the auxiliary battery?
@EireFirst20243 жыл бұрын
Heya if you wouldn't mind, I'd like to ask your advice on something please - I have a 2014 e class & the stop start is not working, no warning signs at all & doing the battery test on the dash is saying I have 14.4 volts when running, I hope that gives you enough information to maybe have a stab at an answer... Thanks in advance 👍
@d.a.f.5982 Жыл бұрын
figured it out yet? maybe replace main batt too.
@EireFirst2024 Жыл бұрын
@@d.a.f.5982 ye it was the main battery.
@jasonb41962 жыл бұрын
You said W212 engine which is incorrect sir. That is the chassis code the engine has a separate code starting with M27x something I believe M272
@PK-kw1zu3 жыл бұрын
Does this require coding for the bluetec cars with start stop?
@carbuying3 жыл бұрын
No this should clear the check engine light on its own
@yingviolin37423 жыл бұрын
Hi, there! Thanks for the video! I want to make sure that the Mercedes benz battery from Amazon you posted is the right one for 2014 E 350. It looks like it is for w211 instead of w212. It is non-returnable so I want to check with you before I order the Mercedes one from Amazon. Thank you!
@carbuying3 жыл бұрын
Don't check with us, check with amazon.
@drenghala3 жыл бұрын
I have the same question and Amazon reviewers say it doesn’t fit 2014 E350, could you please post the correct link to buy it? Thank you
@yingviolin37423 жыл бұрын
@@drenghala I actually ordered it from Amazon and it is a different kind so it doesn’t work. It was also very hard to return it so don’t order it from the link. I went to MB dealer and got the right one in one second.
@drenghala3 жыл бұрын
@@yingviolin3742 Thank you so much.
@jeffostroff3 жыл бұрын
@@yingviolin3742 What was different about this battery that it did not work? I used the automatic model check on the landing page on amazon for both the Bosch and Mercedes Battery. If the voltage is the same, and the size of the battery case is close, then it should fit. What about this battery caused it to not work on your 2014 E350? I saw others asking on amazon if this battery fit the 2014 E350 and the answer was yes. Virtually any battery with similar contacts and screw holes on top of the contacts should work. I installed one from Autozone in my 2014 E350 and it worked. Also there is the link to the Bosch battery as well