Ford C-Max 12V Battery Replacement Including HV Disconnection

[@MikeBoese]

Thanks!

[@DansWay]

Thanks so much for your "Super Thanks"! You are among the 0.1% that shows such appreciation.

[@pem4]

7:28. I ended up buying the same kit you did to pull the rivets out. It cost $30. The tool was worth every penny. I could not get that bottom awkward piece out without it. Excellent video. Thank you!

[@jsentman]

Why isn’t this the very first video that comes up when searching for this, it outranks everything above it in my search by several standard deviations ;) Thank you so much!

[@DansWay]

Glad you enjoyed it! Wish there was a voting process on KZbin myself...

[@tracyschumann9800]

This was the best video available for doing this task. It was especially helpful because the plastic battery vent hose nozel was broken and it too Ford 3 weeks to get me one. I wasn't sure Id remember how to put the thing back together after that long. Dan came to the rescue. Thanks

[@DansWay]

Hey, so glad this was helpful to you! Have a good one.

[@sporkinum]

Thanks for the post. My 12v finally died after 10 years. Followed your instructions, and the low plastic pop rivet was a pain in the rear. I ended up going to OReilleys to get the special tool. After much wailing and gnashing of teeth I reverted to a pointy tip vice grip. After that horrible rivet was done the rest of the job went easy. I used forscan to reset the battery after replacing. Hopefully this will last another 10 years. We only have 40,000 miles on the car, so I expect we'll get another 10, unless I decide to go full electric by then. Anyhow, folks like you are what make youtube great! Thanks!

[@DansWay]

Thanks so much for your comments! I really appreciate that you took the time to say 'thanks'. 😀 Hard to believe you only have 40K miles in 10 years!

[@waltera.nesbethiii3037]

The battery on my daughter’s C-Max Energi conked out on her as she was working at a ski lodge. Zero power = pain to get to the battery because the lift gate cannot open. I was able to jump it, and once we drove back home, I changed out the battery. What a pain, but Dan’s steps are on point. I struggled with getting the new battery in because I didn’t fully remove the high voltage plug and ended up cracking the clip on it.

[@DansWay]

Glad you were able to get it done. Definitely worth it to remove the high voltage connection to make access easier.💪

[@CraigSmerda]

Disconnecting the HVand connector makes this SO MUCH easier Thanks!!!

[@DansWay]

Glad to help!

[@garymoshier7214]

Great video. Well shot and the extra instructions were a lifesaver. Thanks!

[@Kangenpower7]

I bought a 2017 C-Max new 2-2018, and am thinking about replacing my battery now, not waiting longer. I live in Portland Oregon, where it typically never is over about 95F. (a few days a year). My original battery is not showing signs of age yet. But it looks like unscheduled replacement is not going to be easy, as doing it in my driveway proactively! Thanks for a great video! I am also thinking about replacing my high voltage plug in hybrid battery, especially if I can get a longer range replacement! 10 KW would be wonderful! The factory 7.5 KW used to have 18 miles of range, now down to 13 miles at 44,000 miles, 5 years of use. It was searching for a new hybrid battery that brought up this very great video!

[@cheapgeek62]

I wonder if the 12 volt jack in the back of the vehicle couldn't be used as a sort of a jump start port. I know it's not going to handle the amperage needed to jumpstart from zero but it could perhaps be used to give a charge over 15 to 30 minutes to the 12 volt battery sufficient to start the car. (I know it doesn't actually directly start the engine.) I was thinking one of those handheld lithium jump start packs would be handy.

[@gdvisions]

Since your battery is working fine and it's cumbersome to replace, I'd wait until it is necessary and then use this awesome video as a guide. You will start to see warning signs of the battery weakening well before you are in dire circumstances. If you are concerned about being unable to start, you could get a small portable NOCO lithium battery pack to easily jump the C-Max using the grey negative post and red capped positive terminal, right side under the hood (or also jump anyone else in need you come across). You could also get a NOCO battery maintainer, which can top off your charge via the same remote battery posts and might buy you some time until one of your battery cells just gives out being able to hold a charge.

[@winsorro]

Hi there Dan! This video was a life saver. Our 2017 Cmax Energi just died without warning a couple of days ago. Based on my research it was most likely the low voltage battery. I swapped the battery with the help of our video which was perfect showing details of the exact steps I found confusing such as the orange plug and the battery life reset. The car is fixed and I want to send a huge thank you your way! To add some context, I used FORScan on my Win10 laptop along with the OBDLink EX FORScan OBD USB Adapter to reset the battery time. My Bluetooth ODBII adapter that works fine on my 2014 F-150 would not work in the Cmax.

[@DansWay]

Thanks for the comments and suggestions for the ODB Adaptor you used. Is this the same one: geni.us/OBDlink_EX

[@winsorro]

@@DansWay Correct. This is the exact one I bought.

[@DansWay]

@@winsorro thanks for the confirmation!

[@raycollins5914]

Took my car into the dealer after the battery was changed out by a autobody repairman. I was having all these issues and apparently the Ford dealer couldn’t figure out what was wrong. Saw your video follow the procedure to flash the headlights and pump the brakes and now everything works great. I can’t wait to get back and show them how stupid they are.

[@polaw7204]

😂😂😂

[@larryclark9380]

Ignorant can be fixed. Stupid maybe not.

[@richardtribett]

I just finished this job following your video. It was as easy as a kindergarten puzzle. Great video and tips. Just subscribed.

[@DansWay]

Wow, I’m glad it was so easy!

[@d.j.2803]

Great Video. I re-charged my Battery, as it was COMPLETELY dead upon returning from a Month-long Vacation (Feb 2024). I need to find a deal on a battery so, in the meantime, I want to TURN OFF that ENGINE LIGHT on the left Side which also shows a little golden "Wrench" warning and it also displays, "Check Manual." I want to reset it for the time being. Thanks so MUCH for this video (well done). I plan to do it myself. Your warnings about not grounding it out were perfect (using a rag). DJ

[@leetramp]

Yes, I agree, yours is the best on KZbin. Thanks for all your work making this great video. You missed nothing.

[@DansWay]

Thanks for the feedback!

[@oswaldcobblepot652]

Very helpful video! Extremely detailed and thorough. Helped me fix my 2013 Cmax Energi whose battery finally kicked it😢.

[@DansWay]

Glad it was so helpful!

[@ns123]

This is by the far best video for DIY, Thank you!

[@DansWay]

Thanks for the compliment! I worked hard to try to make the steps clear enough to follow for everyone.

[@kdb1001]

Excellent job. Very well produced and informative. Thank you!

[@MartinPohl]

Great job filming and producing and titling!!!! Thank you for showing us!!

[@DansWay]

Hey Martin, thanks for the comments! Did you get this done on your C-Max?

[@brianh9358]

The battery arrived and now I'm trying to finish the job. I don't suppose you remember where you got that 8mm extremely long socket to remove the bolt at the front of the battery? All the places around here just seem to have the standard depth ones that are about half the length needed.

[@DansWay]

I have one of those large socket sets that has both normal and deep sockets. Looks like they are available using Amazon prime: amzn.to/482aV2f

[@jimzons]

I actually used an extension bar to get it removed ... but after turning it forever, realized the nut on the bottom was frozen. It ended up snapping the bolt when I applied a vice grip on the nut to stop it spinning!

[@ronniebaca]

Thank you me and my girlfriend just went through the same exact thing right now ! We appreciate your video and we replaced the battery with no problems thank you!

[@Odessey501]

You're the absolute best. This tutorial was exactly what I needed.

[@DansWay]

Thanks for the comment!

[@Bondibites]

In agreement with all the comments here, very well done. I woke up to a dead 2016 Energi and after putting a trickle charger on it got running but after sitting for only a few hours deadness again. Will assume it is the battery since it is probably original. Just bought it with 30k miles but everything looks new. Only problem I am having is that the electric ABS pump runs at start up and every time the brakes are applied in electric mode. Hopefully a stuck solenoid due to the issue of the previous owner never running in EV mode.

[@DansWay]

Wow, I haven’t heard of that problem before. Let us know how it goes, and what the fix was.

[@jaybarker4575]

Thanks Dan, great video positions super stable , well informed

[@DansWay]

I appreciate the comments!

[@6r3y.1]

excellent video my guy. i was to attempt this but i ended up taking it to the dealership. didnt want to screw around with codes

[@phillybrc]

Hey Dan , Thanx for the video. Great detail. Did you mention which battery to buy? Also, is there any way to know the manual attempt to resetting the battery timer actually worked? Thanks again

[@DansWay]

Hey there, so I don't have a specific battery recommendation. I went to my local parts shop and put in the best battery they offered. I would suggest an AGM battery due to the fact that they don't have the same spillable acid inside. for the manual reset process, I didn't do it myself because I wanted to do it with my ODB scanner to see things actually changing. I would strongly suggest owning a scanner. For the cost it lets you see what is going on and diagnose all of your vehicles before you take them to the shop (if at all...)

[@williamstanley7520]

It looks as if the little tube the is supposed to vent the 12v battery was disconnected. On some batteries, the little port is on the positive side. That is right above the area where you found corrosion on the tie down bold and block. BTW, this seems like the perfect application for an absorbed glass mat battery; I don't know why they didn't use that, in which case tilting the battery during installation wouldn't be an issue.

[@DansWay]

You are exactly right, an AGM battery would be much better for this location. In the video I did show the re-installation of the breather tube at 13:38. My replacement battery had holes on both sides, so I had to cap the one closest to the bumper.

[@rudeman80]

Thanks for the video. With your help, too me 45 mins

[@DansWay]

Wow, Rudy, you slammed through that change! Did you remove the HV connection as well?

[@rudeman80]

@@DansWay Yes, sir. I did everything you did. Since you went through the discovery process, I did not have to. I did use an electric ratchet that sped up the removal of parts. I made sure not to over-torque.

[@DansWay]

@@rudeman80 Awesome! Thanks for your input. Glad to know this can be done quickly once the process is understood...

[@dave874]

Thank you Dan! P.S. I drive a hybrid and it was identical to your car down to every screw and component.

[@stoic-family]

thank you for that comment - my family just bought a 2014 C-Max Hybrid and I'm suspecting we'll need to replace the battery at some time. Really grateful for this video and the community of commenters!

[@Travelingman1956]

Thanks!

[@DansWay]

Thanks so much for the tip! I really appreciate it!

[@robertnussberger2028]

Wow, so this is the battery that spins the wheels when the gas engine is not activated? I expected it to be much bigger, and much heavier. EDIT- 19:23 huh, it's kinda like retraining the computer in the car by reminding the cache how the windows open up and close, I guess.

[@DansWay]

This 12V battery is just used to run the accessories and boot the car computer. The main traction battery is what this battery was tucked under. The whole trunk area is the big high-voltage battery.

[@antoniorodas5523]

Outstanding video. Congratulations

[@DansWay]

Thank you very much! Have you done this yet?

[@kaziu312]

If you do not have a T30 bit, you can also use a 4mm hex key to remove the top four screws.

[@charlotteowens4644]

You are magic.😊 Could you address the interior panels? From the first day of my cmax energie the rear right door panel pulled out. Causing the door not to open unless you lift it up. The dealer can't get it right. The anchors just pop out.😢

[@DansWay]

Thanks for the comment. I haven't had a prblem with the interior panels myself. Are you saying that the clips don't stay engaged in the door even after being replaced? So strange... There are typically a whole series of clips around the perimiter (sides and bottom), then one or more screws that hold it tight to the door. Those screws should be keeping the panel around the door handle pulled tight against the metal structure of the door. Perhaps those are missing, or the part they screw into is missing/broken/cracked?

[@charlotteowens4644]

@@DansWay thank you for the insight. Dealership said clip where replaced. Don't believe them their lips are moving. Iam going to go and get the clip kit you used on battery video and do it myself. Can't make it any worse. Ty again.

[@DansWay]

​@@charlotteowens4644, let me know how that works out. Not sure those clips will be what you need unless they look right to you. Take a look at the design. Could it be more like this? amzn.to/3sqqK3H

[@Blztrls]

Great video. Big help when I replaced the battery on my 2016 Max Energi. It looks a lot worse to do than it is. I didn't have to remove the high voltage cable. The manual battery age reset doesn't give any feedback as to whether it worked so I went ahead and bought the ODB scanner from Amazon.

[@cheapgeek62]

Although others have said otherwise I believe the reset for the battery is just a fancy timer to tell you when to get a new battery. This is probably because it's so inconvenient to have a dead battery in one of these cars. But I don't think it has anything to do with the charging correctly or not that just doesn't make any sense. I and many others have replaced our 12 volt batteries and didn't reset and there are no consequences practically speaking.

[@jntx9575]

Dan, did you figure out that HV connector by yourself? It isn't obvious that you need to pry up the two fingers for the last release. I just adapted a 26R battery for my C-Max. I needed to get the car on the road and there were no 67R batteries available. The 26R is an inch taller than the 67R so the HV connector definitely has to be removed during installation. The venting is the only significant problem with the 26R. A day after the initial installation, I made a sealed box to go over the vents and connected it to the external vent hose.

[@DansWay]

Wow, great adaption. I love it! I actually got the datasheet for the connector itself and saw the exploded view. There were also some numbers on the connector that implied that the tabs needed to be pried up. I assume there is some official tool, but a simple screwdriver makes it move just fine... 👍

[@SarcasticLipStick]

Thank u so much!!! You deserve to have a giant channel and I hope u doa

[@PetesProjects0]

Hi Dan, nice video. Did you have to do anything unusual to get Forscan Lite to connect to the Foseal ODB adapter? My app won't find the vehicle for some reason.

[@DansWay]

I just manually connect to the wifi signal from the ODB adaptor before opening the app. Let me know if that work for you.

[@nvgiant]

What a great video. Thank you!

[@DansWay]

Thanks for the comment! Are you going to do this battery replacement as well?

[@nvgiant]

@@DansWay I did today. Couldn’t have done it without this video. Thank you!

[@douglaslamothe7933]

Very helpful!! Thanks man

[@DansWay]

You are very welcome!

[@Dcris78]

Hi Dan. Thanks for the video! Question though. I bought the FORscan Lite. But it’s asking me to connect Bluetooth but I have the same Foreseal WiFi scanner you do. Any tips to connect?

[@DansWay]

The kiey is to connect to the Foreseal WiFi scanner using your wifi connection in settings on your phone. Once connected, then open the app and it should find it no problem.

[@Dcris78]

Also, I had to “reset” the tailgate too. Had to close it manually then it would open and close. Unless because I didn’t reset battery life. But I had to do the windows too.

[@DansWay]

@@Dcris78interesting! I haven't heard of that one myself. Are you saying it wouldn't close automatically at all?

[@maynornetwork]

When disconnecting the High Voltage Service plug. Does it matter if the 12v battery is disconnected 1st or 2nd to the service plug removal? I have a 2013 Fusion Hybrid so my 12v isn't close to any orange cables or wires.

[@DansWay]

I don't think it should be an issue, just make sure the car is fully off, and been off for a while so it is only using the low-voltage battery at most.

[@simbadurio444]

Awesome explanation.

[@DansWay]

Thanks! Did you get this done on your C-Max?

[@MrBoczech]

Awesome job Dan !! Many THANKS for putting this together and now I have the tools to tackle this job for my own car. Side note did you ever find or look for an AGM battery ?

[@DansWay]

Thanks for your comments! Once I got this installed (and replaced the faulty water pump that was running randomly when the car was off), all the errors I was getting on the car went away so I haven't thought about it again since. Let me know if you found an AGM that would work in this form factor as that would be preferred for many reasons.

[@andrewwilliams6963]

Do the headlights/turn signal bulbs, that's a real PITA.

[@DansWay]

Actually I did that one a few weeks ago: Easy Ford C-Max LED Headlight Replacement kzbin.info/www/bejne/g4W2inR-Zbp6Y5o

[@DansWay]

I agree the turn signals are a pain in that you have to add ballast resistors. I’m doing that turn signal video now so hopefully that video will drop in two weeks.

[@samevo8]

I want to disconnect the negative terminal, but not remove the battery. I need to work on the seatbelt system so just want power disconnected. Is there an easy way to remove the negative terminal without disassembling all the panels? The negative terminal is difficult to pop off.

[@DansWay]

Not sure how to do that easily. Removing the panels only takes a few minutes with the right T30 bit. Just give it a try and you can have it out in less than 10 minutes.

[@brianh9358]

Was going to follow this video to replace the battery myself but now the liftgate won't open and there seems to be no manual way of opening it without power. Don't suppose you know where there is a manual release for the liftgate? I've looked around from inside and no manual release seemed to be visible... sigh.

[@DansWay]

You can hook up jumper cables or a jump pack under the hood to apply 12 to the system so you can pop the hood. Let me know if this helps.

[@brianh9358]

@@DansWay Yeah, I ended up doing that before I read your message. Just kind of odd that, unlike most vehicles, the CMAX seems to have no manual method of opening the hatch from the inside. I looked through a bunch of forums about it. Anyway, thanks for the video on switching out the battery!

[@twobambutree]

Thanks man this is very helpful!!!

[@johndunford9415]

Very informative guidance, Dan! I am frustrated with a Stop Safely Now mode on my 2016 Energi. Any ideas on how to resolve it?

[@cheapgeek62]

Mine did this and just needed new spark plugs. I've never had a hybrid specific problem on my c-max just run of the mill gas car problems.

[@clintdensham1288]

I'm having the same problem, John. Did you get it resolved.

[@cheapgeek62]

The only time that happened to me I needed spark plugs. No lie most of the problems you have with a hybrid are going to be the same problems you have with any gasoline engine car.

[@Arabsmexican]

Quick question... do i have to unplug the high-voltage battery clip . ? And why? I changed the 12 volt battery without doing that? Anything could happend ?

[@DansWay]

I just didn't like the way the power connector was all scratched up by Ford's service department replacing it in the past so I researched what it takes to remove it. You don't have to for sure... Just less likely to smack it when removing the battery, and you don't have to stand the battery on end to get it out with the conector removed.

[@thedopplereffect00]

I just did this today. What a pain. Cracked the positive terminal and had to buy a new one.

[@DansWay]

Aw man, what a pain. How’s your back? Any other tips you can suggest?

[@thedopplereffect00]

@@DansWay Back is fine. I'm just amazed Ford designed it like this. The only thing the 12V really needs to do is turn the HV relay on. They could have made it much smaller.

[@CaraCasuccio]

if I take a 12v out of 2015 ford cmax to replace a dead one, will the car shut off and think its is stolen? Do I need a memory saver mechanism?

[@DansWay]

Removing the battery doesn’t change any settings. It won’t work without the battery so it won’t know any better about the battery being removed.

[@fonzonater]

I replaced my battery but now my. car is stuck in accessory mode. Have you ever experienced that and know how to get out of it?

[@DansWay]

So strange! So what happens when you press on the brake and press start? I've never seen this myself. Anyone else have any ideas?

[@fonzonater]

@@DansWayfigured it out. It was the high voltage disconnect. I didn’t put it back correctly. I was tired and wasn’t fully aware. But once I double checked I realized I forgot to fully connect it.

[@BrendaCavanaugh]

Hi. My husband watched your video to replace the 12v battery in our 2016 Cmax Hybrid. He got the battery replaced, but when he hooked it up, the car alarm started going off and the only way it would stop is when he disconnected the battery. Did you encounter this problem, and if so, how did you stop the car alarm? The key fobs have lost their programming and need to be reprogrammed as well. Trying to find a video on that, but haven't had any luck yet. Suggestions? Thanks for any ideas you might have!

[@DansWay]

Wow, I have no idea what would be going on there. Were the keys working before? Does the alarm sound right away when connecting the battery?

[@BrendaCavanaugh]

@@DansWay The keys were working before all of this started. The car sat for a couple days while my husband was out of town. I went to use it and the fobs wouldn't let me in. I thought it was the batteries in the fobs. Replaced them without luck. When my husband got back, he did some trouble shooting and that's when he replaced the 12v battery. Recently, the car sat while we did some internet research on the alarm sounding and fobs not working. We went out today to at least try to figure out the alarm. He hooked the 12v battery back up and I was prepared to try a couple of the 'fixes' that I found online, but the alarm didn't start back up. Thank goodness! One thing down! We also tried to reset the battery monitoring system, but the flashes of the bright lights and then pressing the brake pedal didn't seem to work. I tried to program the intelligent keys, but the car doesn't detect either key. We are able to put the key in the 'slot' on the steering column and use that to start/turn off the car. But the remote doesn't work for the door locks or anything else. I replaced the batteries in both, but still no impact. I'll keep looking for a fix online in the hopes we don't have to take it to the dealer to get them reprogrammed. Thanks for your video on replacing the 12v battery ~ my husband looked at several and said your's was the best, and the closest to our 2016 c max hybrid.

[@DansWay]

@@BrendaCavanaugh Any update on the car?

[@BrendaCavanaugh]

@@DansWay Thanks for checking back. We haven't been able to reprogram the intelligent keys. Haven't found the right thing online. I think we'll have to take it to the dealer for help. Our 'resolve efforts' have been put on hold while we dig out of a couple major snow storms. Hopefully next week we can figure it out. Thanks again!

[@DansWay]

Hey the@@BrendaCavanaugh, whats the update on your car? Did you get it all worked out?

[@BigKy-Mart]

I just paid the dealer $40 to install on my 2017 Energi. Didn't want to have to do all of that myself.

[@DansWay]

That is a great price from the dealer! The quote I have is $110 from Ford...

[@BigKy-Mart]

@@DansWay I'll take it. I don't move around as well anymore, and felt that the $40 was worth it for the time lol.

[@Luiblonc]

I got the same price from the ford dealer of $110-120.

[@Luiblonc]

@@BigKy-Mart Was this a ford dealer? It seems they are independent from ford, like some one local from an alley tire shop.

[@BigKy-Mart]

@@Luiblonc No, Buick/GMC store where I work. No discount on labor. A bit higher than the standard battery install fee of $30.

[@teriteri3543]

Hi Dan...love this video. Could you tell where I could locate the key code in my 2013 ford c-max hybrid se.. im not able to do the 2 key method because I only have 1 key. Thanks

[@Narek1988]

Hi everyone. And how have you opened the trunk?

[@DansWay]

You can open the hood and apply power to the 12V system and battery with a battey charger or jumper cables. Once powered, you can pop the trunk.

[@Narek1988]

@@DansWay I wonder if there’s no energy, the trunk can’t be opened?

[@DansWay]

@@Narek1988Correct, there is no way that I'm aware of to release the latch without applying power to the 12V terminals under the hood to power the 'dead' 12v battery.

[@vidmantas585]

Sveiki, ačiū video Ford c max gerai.Problema, mechaninį raktelis visų durų atidarė bet negaliu atidaryti bagažinės gaubtą.Ką daryti?

[@DansWay]

The next step is to use jumper cables connected under the front hood to the jump-start terminal on the driver side of the car. There is a red cap you remove that shows a metal tab you connect to for the + or positive connection to a jump-pack or other car. The negative connects anywhere on the metal frame of the car. This should power the car enough to open the rear hatch with the button on the center dashboard.

[@gdvisions]

Great video, very detailed! One step not covered- the second vent hole on the positive side was plugged on the removed battery, but not shown plugged on the replacement. What would you recommend for the job?

[@DansWay]

I'd pull the plug from the old battery to put it on the new one myself. The fumes around it will be acidic, so whatever you suff in there needs to be plastic for sure.

[@gdvisions]

@@DansWay Aha, of course! Thank you! Now that I'm in that far I see that the old battery has such a plug. Some folks were talking about duct tape, didn't sound optimal.

[@jonkoch9252]

Thank you, this helped me allot!!!

[@vidmantas585]

Hello. The problem is battery discharge. How to open the trunk lock. Show video

[@DansWay]

Got it, sorry about that problem you are having! The way to fix that problem is to open the driver door with the mechanical key, then pop the hood. From there, you can use jumper cables to apply power to the car using the red power tap located on the driver side of the car. That will power up the car computer and allow you to use the trunk hatch release/lift.

[@paulleiby2901]

Nicely done, thank you.

[@mikeaieta236]

Thanks Dan, just replaced 2nd battery in 3 months. Seems like if I let the car sit for 1 week, sometimes less - battery completely dead - so dead you can't even charge it with a trickle charger that wants to see some kind of a load before letting your charge. What is up? Some phantom drain? Ever seen this? Any ideas? Thx!

[@DansWay]

Hey Mike, Yah there are some phantom draw problems with some cars that tend to kill the 12V battery quickly. Do some google-searching and you will see lots of potential reasons. I found that my car's water pump was running continuously, or in strange 'waves' faster/slower even when the car was off. Replacing the water pump eliminated the battery problem for me. Definitely a DIY task if you are handy. Another possibility is the radio not shutting off. That is another one where twice in the past year I have had to pull out a fuse under the glovebox (F69 I believe) which basically reboots the entertainment computer. The computer is always running, and can crash or get stuck in a mode so it never enters power-down mode. The speakers will turn off (except for the dash mounted one for some reason), but it will also run down the battery.

[@TillyKYoung]

My brother had problem with battery. Took over a month to get someone "certified " to troubleshoot. After scanning everything was ok. What was happening was key fobs were week. If hybrid can't sense the key fobs the engine won't let start. $10 to replace fob batteries fixed the problem.

[@akmaldurrani4616]

Great video 🎉 Where is the IMA battery?

[@marshallmartinez6567]

Dan, My 2013 c-max hybrid would not start last night so I put a charger at the post under the hood and was able to drive the car home, I took the battery off to buy a new one and was told the battery checked o.k., I put it back on but the car did not start this morning! The battery is 6 years old and I am thinking I should still replace it but I don't want to spend the money if this is not the problem. Do you have a suggestion???

[@DansWay]

I would also check the voltage at the post vs. right at the battery to confirm there are no issues with the connections somehow. If it checks good then there shouldn't be a reason for it not to start. I’d definitely recommend replacing the battery if it is 6 years old as that is definitely pushing it...

[@clintdensham1288]

Did this process and when i reconnected the battery I got a Stop Safely Now Warning. Car will turn on but won't drive. Any help would be appreciated.

[@DansWay]

Wow, so strange. I would double check the high voltage connector that is over the battery if your removed it, and the high voltage battery disconnect behind the seat.

[@clintdensham1288]

@@DansWay I've done that multiple times. Just had it towed to the dealership. 😭

[@erickcoutsii9499]

You actually don't need to take out the T25 bolts since the bottom piece can be removed with the rest of it.

[@johnbarrios1510]

Thanks Dan this was a phenomenal video. I took my cmax to get the battery test at Autozone. They hooked it up to their tester. It Read Good 81% BUT that ‘system shutting down to save level’ prompt pops up. It shuts off, the tail gate seems to be glitchy among other small things I’ve noticed. Would you say it’s time to replace my 12v battery? Thanks again amigo!

[@DansWay]

Yah, sounds like it could be time. You could put a charger on overnight to top it off and see if there is any difference after that.

[@Blztrls]

The Foseal Wifi OBD scanner that is linked from this video does not work with the Forscan Lite App. I bought both and no matter what I did I could not get the Forscan Lite app to connect. It connected to other apps I downloaded so I think it is an incompatibility or bug with the Forscan Lite app and this OBD adapter. I'm returning it and ordering a Bluetooth scanner to see if I can get it to work.

[@DansWay]

Not sure why it didn't work for you. Were you on Android or Apple? I have this one as you can see in the video. Now I did upgrade to the 'pro' version but I don't believe that would be an issue with basic connection.

[@Blztrls]

@@DansWay I’m not sure why either. I’m using the Apple iPhone version. Maybe FORScan Lite changed the coding in the latest version 1.5.16 since they changed the core. It does say on the App page that they no longer recommend ELM 327 adapters. Anyway I ordered the recommended VLinker FD BLE adapter which fortunately is not that much more at $45 and uses Bluetooth which will be much more convenient than the Wi-Fi connection. I’ll let you know if this works.

[@Blztrls]

@@DansWay I got the vLinker FG+ adapter from Amazon (one of the recommended adapters on the Forscan Lite App) and was able to get it to connect to Forscan Lite and to reset the battery age. So I think the Foseal adaptor is no longer compatible with Forscan Lite. Also, I was able to confirm that the manual reset method (flashing highbeams & pressing brake) did not work for me either.

[@DansWay]

@@Blztrls Ok, I'll have to try using mine to see if it still works. I just used it last night on my daughter's Kia Soul no problem.

[@nancykohlman6431]

Omg, I left too much junk in the backseat when I took my C max in for a battery change - I’m so embarrassed 🙈

[@DansWay]

Oh man, I can only imagine the mechanics thoughts towards you seeing all that... Thanks for the laugh!🤣

[@nancykohlman6431]

@@DansWay The soft-handed, service writer only said the 12 volt battery was in the back hatch so I threw everything in the back seat 🤷‍♀️ My former rural life taught me to carry survival gear so hey 🤷‍♀️ You know what you don't know until you know it! I do know my hands were tougher than his mushy limp handshake. 💪 - signed, former 20-year ranch wife 🏇

[@redihoxha2940]

Shows any error when this battery need to replace?

[@DansWay]

I got a bunch of different problems when the battery was getting weak which is why I chose to replace it.

[@redihoxha2940]

@@DansWay I going to buy one like that tomorrow and I wanted to know as much as possible information, I make a drive for 30min and looks like was ok. I'm now used worth hybrid vehicles ✋

[@prowindowcleaning]

how do I check if something is running in the background to drain the battery?

[@DansWay]

It's not easy TBH. Best method I have would be to measure the battery voltage over a period of hours to see if the voltage is going down over time. The first measurement shold be done after several hours since the last use of the battery as well, so you will need to open the hatch and leave it there for an hour or so before taking a first reading, then wait several hours for a second.

[@jhildebrand329]

You explained in a short bit what other ase cert guys failed to explain in 20.

[@DansWay]

Good to know! Thanks for that 😃

[@EVA-Grain]

Good job ;) but the picture of both cameras are the same, there is no difference between them.

[@DansWay]

Are you commenting on the backup camera?

[@EVA-Grain]

@@DansWay yes, have the same camera, unfortunately no difference

[@billinca9274]

Thanks

[@DansWay]

Hey Bill, did you get this done on your C-Max as well?

[@billr4283]

Thank you VERY MUCH!!

[@DansWay]

Hey Bill, glad this was helpful. How did your installation go?

[@r5LgxTbQ]

I love my C-Max but it's just the most difficult car ever to work on.

[@CaraCasuccio]

If I take a 12V battery out of a 2015 Ford Max Hybrid, will the car shut off when new battery replaced and recognized the car as stolen? Do I need to purchase a memory saver mechanism device?

[@DansWay]

I'm not aware of any memory-saver mechanism for this car. I don't recall even loosing my radio stations for example.

[@newgeneration9722]

Danx way isnt the good way. Flip the battery towards your head. You don't need to take all the stuff apart. Just one cover and the bolt that holds the battery in place. Negative and positive. Flip batter up. Simple.

[@torileighr]

Thank you

[@robertbartlett1958]

Thanks Dude...

[@DansWay]

You're welcome, hope this was really helpful.

[@AbilioRodriguez-re2rn]

En español porfavor

[@raihna1]

Thanks!

[@DansWay]

Thanks for the SuperThanks! I really appreciate it.