Volvo Auxiliary Battery Diagnosis & Replacement DIY (Volvo SPA S90, S80, V60, XC90 & More)

[@cscotttrent]

Local ‘Volvo specialist’ shop was going to charge me $500 to replace the Aux battery. I watched your video and then grabbed a replacement battery for $92 at the local O’Reilly. Took me 15 minutes to replace! And I’m probably the least handy guy in town. Thank you! Side note, my fan speed on my AC system would not function at higher speeds. That is until I replaced the Aux battery, now it works perfectly! Btw, the local volvo specialist said the problem with the slow fan speed was probably due to a leak in one of the AC hoses which they would gladly fix for $700 and that would be a great start to finding out what the problem with the AC was. So instead of $1200 of repairs I’m out $100. Thank you!!!

[@fcpeuro]

Way to go!

[@phillipdewitt4454]

My local Volvo dealer quoted $119 plus labor he estimated 30 minutes max.

[@tonyb7748]

@@phillipdewitt4454 similar for me, my s90 sat for a month with only one start on the 10th day of storage and had to replace. $145 out the door with a wash.

[@craygoin]

Did this turn the start light off?

[@tonyb7748]

@@craygoin yes if you mean the dash warnings.

[@dipeshpatel7623]

Purchased the battery from the provided link and installed it on a 2018 Volvo XC 90 T6 inscription. Installation was very simple and after driving the car for 20 + minutes the start/stop service sign went away, Thank you FCP Euro.

[@MDBowden1]

I’m based in Switzerland and have a 2016 Volvo XC90 T6 Inscription. Immediately after the last service the Start/Stop service warning appeared. Unfortunately my two most local Volvo dealer/service are not the best or most honest, so I wanted to see if I could fix this myself. I could not find any european websites where I could buy a new replacement online, but I found it on the FCP Euro in the US. The price and delivery costs were good, so I ordered it. In less than a week it was delivered to me here in Switzerland (14th June 2021). The battery had a manufacture date of May 2021, so brand spanking new. I fitted it today and took the car for a test drive to find that the Start/Stop warning no longer appears without me having to reset anything, and the start/stop function now works perfectly. Many thanks to FCP Euro for the excellent service and for helping me to save time and money by not having to go to a dealer and have it done ‘professionally’. 👍

[@Okinanam69]

You mean the FCP Euro in the US....in the US!

[@macbookmoon]

Hi Adam, thanks for your video. I just replaced the battery in my car and it was exactly how you explained. Cheers

[@Zarathustra-H-]

Would appreciate the same video for the large AGM battery in the trunk!

[@haleaurelian]

Negative terminal should be removed first, then the positive terminal on removing the battery. The order is reversed when reconnecting the new one!

[@TCSC47]

Absolutely correct to remove negative first!

[@automationforvmix]

Exactly God point

[@hankhilll4651]

I thought so…

[@livewutangclan]

Ty

[@CoppertopFPV]

For anyone else messing around with this after not driving much if you check your battery and it shows good voltage of 12.6 or so but the warning light stays on... it takes ages to disappear. In my case over 5 long journeys over a couple of weeks. Out of interest I decided to invest in a cheap smart charger for agm batteries. It shows the battery has around 50% charge and merrily sorts it out. After much messing the warning light comes on when the car has around 80% charge however both batteries are connected on a common circuit so it could also be your main battery in the boot causing it. The short answer is spend £50 on a smart agm charger or drive more often. The alternator will never 100% charge the batterys and it doesn't even matter if you don't use stop start. You don't need to reset anything

[@compaholic83]

My 2019 S60 is doing exactly this. I just went out there and the voltmeter registered a 12.3 on the aux battery under the hood. My commute is 20 minutes each way and it mostly sits on weekends so it's possible my battery charge is under 80%. I was looking at the Noco chargers as they are highly rated, I may need to pick one up and leave it plugged in for awhile to see if it sorts this out.

[@CoppertopFPV]

@@compaholic83 I got the noco. Put it on charge and then followed using the repair function. Light went out shortly after.

[@compaholic83]

@@CoppertopFPV Thanks for the feedback. For the time being I shutoff the auto stop/start. Looking to see if the noco's go on sale for Black Friday as i want to pick one up. What is the repair function?

[@shanechristman434]

@@CoppertopFPV Did you just connect to the jumper posts under the hood? IIRC doing that will impact both the main and accessory batteries. Is that correct? I have a 2019 Volvo XC90, and have the start/stop aux battery error as well. I have a NOCO charger and would like to do the same thing you did to see if I can salvage it. Please let me know. Thank you in advance!

[@CoppertopFPV]

@@shanechristman434 one to ground bolt/post and other to battery as per the handbook

[@partydogg0]

Thank you! Love the SPA content!

[@RandomYoutuber1023]

I believe this aux battery is used also for the electric water pump when stopped at lights or the vehicle is turned off and cooling down. It is also used for the electric power steering at full stop as well. So yeah, it's kinda important...

[@mateuscabrera]

Not! It’s only for the engine start function

[@Okinanam69]

@@mateuscabrera The engine start function is controlled by the larger main battery, not by the support smaller battery.

[@cbsnco]

more volvo diy's please! :)

[@fcpeuro]

Plenty more to come!

[@dg0m3s]

Yes! More! Specifically for the SPA platform!

[@asafarifard]

Hi Adam, thanks for your valuable video about SPA volvo, do you have any scan tool recommendations for volvo v90 2017 for DIY. Please let me know your favourite scan tools . Thank you again Adam and good luck

[@thadeisenhower1682]

thanks just saved me $400 from the crooks at volvo

[@sushi1026]

Can’t wait till you guys talk about transmission oil change...

[@johnowen8835]

Great video Adam - awesome!!!!

[@aford1addie]

to remove: Negative first, Positive next. To install: Positive first, Negative last

[@SlavKing95]

can you tell me why? he did it different in the video

[@ROKAPENA]

Thanks for this great video showing us how to do this. I have a V90 CC D4 2020. I just came back from the dealer to run the annual maintenance of the car and I reported that the start stop works randomly and I have a message on and off that the power steering assistance had reduced, which apparently can be connected with stop/start support battery issues. I don't have any message saying Start/Stop Service required though. Anyway, dealer says that they need to replace support battery and cables? Is this right? I was thinking about buying a new battery and replace it myself following your instructions but if new cables are required I would need to take the car to the dealer. I would appreciate your advice, please.

[@lakshmandalpadado9066]

great content, great presentation - excellent video.

[@fcpeuro]

Much appreciated!

[@MrRadmirek]

Hello, is the aux battery also responsible for the climate? Does it make sense to change the aux battery without changing the main one? Many thanks. Radim

[@johnwride4911]

Hello Adam, I have a 2017 Volvo XC60 and probably need to replace my battery - seems like a simple job but was asked if it is the main battery or the Aux battery. I don't know if my 2017 XC60 had one, how do I find out? Someone suggested if I have a stop/start feature then I have one, but I don't have this feature. But thought it doesn't work because the battery is kaput, so how do I find out. Great video, so if I have one I will know how to change it. Many thanks. BTW do you have a video on changing the battery (main) on a 2017 XC60?

[@fmrdds]

is there nay software updating/syncing needed after replacement?

[@franciscojardim7543]

Hi Adam, thanks for this excellent video. My 2015 XC60 T5 is showing this message for servicing the start/stop, so I will follow your instructions and replace the auxiliary battery. Another issue I’m having is with the climatization system. Air conditioning works perfectly, but if I want hot air to heat up the cabin, it doesn’t work and the car displays no message about it. Can this issue have any relation with the auxiliary battery? If not, do you have any tip about how to fix it? Thank you!

[@fcpeuro]

Hi Francisco, it can certainly all be due to a bad auxiliary battery. Start with that first and then proceed from there to see if the problem reverts itself.

[@franciscojardim7543]

@@fcpeuro thank you very much. Have one further (silly) question. I wanted to check the fuses for the hot air not working. But this car has a lot of fuse boxes!! I checked the 2 fuse boxes below the glove box, all ok. Then checked the ones in the fuse box under the hood, ok too. Then, there is another fuse box that is just besides the auxiliary battery, and I tried in many ways but was unable to open this one… Any clue on how to open this fuse box?

[@mateuscabrera]

@@franciscojardim7543 Francisco, liga na oficina Swedish Volvo em São Paulo - a mais especializada do brasil. Tenho uma 2015 idêntica a sua é demora até sair quente como em todo carro, até os encanamentos e sistemas esquentarem pode ir alguns minutos dependendo do clima. Mas se é problema melhor vc buscar quem entende!

[@franciscojardim7543]

@@mateuscabrera valeu a dica, Mateus. Moro em Poa, então levar o carro pra SP é fora de mão. A intenção da minha pergunta era entender se o aquecimento da climatização é feito pela água de refrigeração do motor (mais comum) ou se tem algum aquecedor elétrico, dependente da bateria auxiliar.

[@mgetzam4154]

Great video. Thank. Does anybody know where volvo v60 B5 mild-hybrid 2021 year has its support battery fitted?

[@lucaslezin4413]

Thanks for info.

[@gabrielmiron4256]

Hi. I have replaced the auxiliary battery, and now the SS function doesn't start anymore. Do you know why? XC90 D5 Inscription.

[@ismailadiputra7551]

can we charge the auxiliary battery using car battery charger?

[@Deniz_Boran]

Thank You

[@jorgecajas832]

Great. I have s90 2018. Thank you so much

[@MrPakdirockZ]

Thanks for the video Adam. Does it apply for the 2017 S90?

[@rcs95d]

Can you help me with my 2015 V60 P3? I’d love to see the things to remove to get to the battery

[@foxyicekitty]

I bought the battery off his link and it came in and worked great. Only thing is I can’t get the service signal to stop showing on the car. Not sure how to remove it myself. The battery works great and the link he shares gives your a life time warranty on it. Took less then 10 mins to do it. Saved myself 200$ to do it myself. Does anyone know how to remove the message without going to volvo?

[@lalicatasalvatore5401]

En hoe is het verder opgelost ? Die service fout ?

[@najwanr5786]

Great tutorial. Is there a way to remove the service required message without vida, if it doesn’t go off on its own?

[@fcpeuro]

You can try this: -Turn the ignition to position I (please refer to your owner's manual for information on the ignition modes) -Press and hold the OK/Reset button on the left steering wheel stalk -Switch the ignition to position II while still holding OK/Reset button -Wait 10 seconds while still holding the OK/Reset button -Release the OK/Reset button when the information light starts to blink -Turn off the ignition for at least 3 minutes -You will hear a beep when the reminder is reset

[@najwanr5786]

@@fcpeuro thanks guys appreciate it. Stealership is quoting a ridiculous price for “battery calibration”

[@this_steve]

@@fcpeuro Are you referring to reset button on the left stalk (turn signal)?

[@johnmedina319]

are you able to tell me how to remove the tray the aux battery sits in? i removed the 4 8mm bolts from the tray but it seems like it's still connected on something I can't see. thanks

[@Jablonski277]

Great video. How much is a scan tool for a V 60 ll?

[@joseduranjr4963]

Please show how to remove and install the alternator for a 2017 VOLVO XC60 with the twin charged 2.0 (T6 R edition).

[@mea-thi6584]

Hi Adam, thanks for you video. I have a 2019 XC 60 with the message Auto Start/Stop Service Required. I have tested the main battery and the auxiliary and the voltage are over 14. what dou you think is the problem ? Il would try to change the auxiliary battery, how change it without loosing memeory ? Thanks a lot.

[@xXxRazor51xXx]

You won't lose memory changing the auxiliary battery, as it's only responsible for the auto start/stop system, not the car's main computer. Also, are you measuring the voltage while the car is off? Because 14v its way too overcharged. If the car is running you're not measuring the voltage of the battery, you're measuring the voltage at which the Dynamo is charging the battery (for which 14 is okay). If the car is off and it's measuring 14 after driving for a while go get your Dynamo checked as it might be overcharging the battery, which if taken to an extreme could make the battery explode or at the very least make a cell go bad(which means the battery is dead for good).

[@MrMatin89]

Is it possible that Start&Stop failure comes with the Check Engine light ?

[@camino786]

Hello Adam. I've been having battery problems for almost two years in my XC60 2018. Many charges with cables. A year ago the local Volvo distributor changed the battery control module. A month ago the driver's main screen went black. Could it be that the control module is electrically kaput broken and the cause for that problem? I'm buying a new main battery (it's not charging any more) and I'm afraid the very expensive screen will get burnt again. I will appreciate any comments I may get! I live in Lima Peru and the Volvo distributor is extremely expensive.

[@peterchoi6789]

Thank you good video

[@jerardgeorge7415]

Is any kind of software update necessary after changing the support battery? Dealership is telling us that we need a new support battery and a software update...

[@shivampatel1982]

Can we use 12v 8Ah battery for this

[@jeremydreyer6034]

I have a 2018 XC90 and recently had the “12v battery charging fault” message. I replaced the aux battery and am still getting the issue. I think my BMS charging system may not be working (output too low). Do you all sell the BMS controller?

[@antoniosalvador1000]

Great video. I need to park my volvo V60 for a few months, should I disconnect the negative terminal on this battery and the one in the trunk? Will the alarm go off if I do so? Thanks

[@ivinio21]

Antonio, it’s just like in the movies. The bomb will not go off if negative wire is disconnected.

[@joseduranjr4963]

I own a 2017 VOLVO XC60 T6 with the 2.0 and auto start/stop feature. I never got the dash message for service on my battery. I removed the small battery behind the cowl and tested it. It tested dead but at the same time I cleaned the battery and filled each hole in the battery with distilled water and now they battery shows 12.94-13.65 charged power. It’s working like it should. I’m puzzled. Will a new battery do better or should I just keep this one in the car until I see the dealership (local VOLVO dealership is 2 hours away one way).

[@timdietrich6258]

Question - could this auxiliary battery lead "City safety" error light coming on? Sometimes it will work find (GPS, cameras, blind spots) and then randomly the error will come on disabling these features. Thanks

[@bethrealrockingrealtortrep2827]

What if you have all those lights and that aux battery is good with a reading above 12v?

[@geoffreyting8880]

Does this apply for 2018 XC60 Inscription D4 (Diesel)? Thanks!

[@ivinio21]

My XC90 is having an issue with sensing the key fob with no radio interference around, sometimes can’t start the car, it says “no key found” when key is in the cup holder. Sometimes engine won’t start (auto stop/start mode) at the traffic light or at the stop sign. 🤷🏻‍♂️

[@ibotr42]

Tesekurler sonra bilgisayar ile reset yapmak gerek mi acaba ?

[@joshmileikowsky]

Do you have a video showing the process of installing a new main battery as well?

[@KINGDINGALICIOUS]

Dealership for that one as you will need software resetting/updating after and the dealership is really best option for that.

[@jesusromero8081]

and where is the main battery of the Volvo v60 2020, it is something that is killing me, I cannot start the car because that battery is dead

[@oluskloc]

Start-stop is the first system to turn off

[@Antilaakeri]

please take the ground wire off first.

[@Mishmilev]

I have XC40 and i cannot start the car, from the phone from the dealer they said this battery is causing the issue. Could this be possible, i thought this is only for start/stop functions not the starter of the car( engine).

[@fcpeuro]

If your battery is dead, it will not turn over the starter and start the car! You may want to try jumping it to see if that does the trick, the battery may be too low.

[@BiHWolf-lo6ts]

YOU GUYS NEED TO MAKE AN APP. PLEASEEEEE

[@rishipopli]

Do you recommend buying the Auxiliary Battery (Part 30659531) directly from Volvo or can I just buy it from a Auto Zone ?

[@fcpeuro]

Hi Rishi, for a sensitive item like that, perhaps sticking with OE may be best.

[@jesusromero8081]

and where is the main battery of the Volvo v60 2020, it is something that is killing me, I cannot start the car because that battery is dead. Thanks

[@user-ce1dy8do9t]

Another video indicates that disconnecting the negative terminal of the main battery for 20 mins prior to installing a new support battery can clear the warning. Comment?

[@mommaoinnh2674]

Another video takes off black first. Guys… my battery is out… now.. which one goes back on first, black or red?

[@jurjenrienmeyer6983]

It can stil have 12 volt plus So you do have to test its start power with apps tester Mine was dead (no starting power at all

[@mellyg_ljc]

Can you explain thus more? What is apps tester? My sux battery is showing 12.4 v but heared seats won't work, ac fan speed, etc all down after "12v battery charge fault" error message

[@Kalamidadpq]

@@mellyg_ljc Did you get this fix? I'm having the same issue.

[@joshcarter4397]

Amps. Not apps.

[@irambler4791]

Why the heck are you removing the positive terminal first???

[@rolandreiss7101]

Why should one disconnect the +12V terminal first?

[@danielwareham832]

If you disconnect the negative with the positive still attached to the battery, the negative terminal in your hand has 12v on it. If you then touch anything metal with it you will arc and damage the battery.

[@thoughtcriminal5655]

@@danielwareham832 Then why does every single manufacturer, mechanic, auto electrician tell you to never disconnect positive first?

[@fgaryam]

Always disconnect the GROUND (In this case negative) cable first. Else, accidently touching any metal part of the car with your non-insulated tool while removing the HOT cable (in this case positive) is dangerous. It would certainly draw sparks, may weld your tool to the hot battery terminal and could cause the battery to explode. It's nothing to draw hundreds of amps from a battery shorted to ground.

[@markberry9215]

Disconnect negative first when taking off a battery and connect negative back on last when putting new battery on always@@danielwareham832

[@FrenchValleyAirport]

Why does it need an aux battery for start stop when no other manufacturer does.

[@jonphillips5119]

90% of Other brands also have a drop start battery

[@FrenchValleyAirport]

@@jonphillips5119 My BMW doesn't, no american manufacturer does, no japanese manufacturer does, mercedes doesn't, they have an AUX battery in some models but that predates stop start

[@NnetTucnak]

After replacing battery, there is still start/stop error. So i must go to Volvo. I newer FW you cant do it by your own...

[@roogozinski]

Do You have some solution for this problem? I got it today in my Volvo after replacing battery. Thank You!

[@NnetTucnak]

@@roogozinski yes, its solved by its own after one day... I drowe around 250km and nothing. Morning after, no problem...

[@TCSC47]

At 2:20 you say remove positive connection first. This is wrong. The negative should be disconnected first. Then when disconnecting the positive there is no danger of shorting out the battery if your spanner or socket wrench inadvertently touches the car metal work in any way. I have seen the mess a car battery can make of a spanner and the injury caused when a battery is shorted!

[@fcpeuro]

Thank you for the note, Tom!

[@charlestimmis273]

Battery 101: you always remove the negative cable first. and connect it last....

[@fcpeuro]

Great note!

[@javicr2570]

First easy part replacement of a Volvo ha ha

[@fcpeuro]

Easier than a Volvo Air Filter replacement thats for sure ! 😂