V90 2018 Battery clarification

sjwk · Jul 3rd, 2024, 19:14

I've just started getting the 'Start/Stop Support Battery' alert - as the battery must be 6 years old now, I'm guessing it's due a replacement. But could I clarify which battery it is? I've found several threads here and elsewhere, as well as the manual but I'm still not 100%

The alert mentions Support Battery, which I gather is the one in the front, but it also lists the Start/Stop one, which other threads say is the one in the rear. Obviously I don't want to spend money on the wrong one!

In case it sheds more light, before the Start/Stop error, it was showing a 'Power steering assistance temporarily reduced' warning, starting two days after it was recently serviced which searching suggested may also have been battery related, but then that message stopped coming up after being on charge for a day. Would that be related to the same battery used for Start/Stop, or would it suggest both need replacing?

deepsix · Jul 3rd, 2024, 19:51

Pretty sure this will be the small under bonnet battery which has done well to last since 2018. I changed mine in my 2017 V90 a few months ago. Approx £110 from Volvo and plenty of videos on Youtube as to how to swap it. It's a very easy job. No messages ever since changing mine.

nu11eaf · Jul 3rd, 2024, 21:02

Just give it a good long charge using the engine bay charge points and see how it goes, they are usually ok after a charge, give it a boost charge every month or two.

Jul 3rd, 2024, 19:14	#1
sjwk New Member Last Online: Jul 4th, 2024 19:03 Join Date: Mar 2022 Location: Oxford	V90 2018 Battery clarification I've just started getting the 'Start/Stop Support Battery' alert - as the battery must be 6 years old now, I'm guessing it's due a replacement. But could I clarify which battery it is? I've found several threads here and elsewhere, as well as the manual but I'm still not 100% The alert mentions Support Battery, which I gather is the one in the front, but it also lists the Start/Stop one, which other threads say is the one in the rear. Obviously I don't want to spend money on the wrong one! In case it sheds more light, before the Start/Stop error, it was showing a 'Power steering assistance temporarily reduced' warning, starting two days after it was recently serviced which searching suggested may also have been battery related, but then that message stopped coming up after being on charge for a day. Would that be related to the same battery used for Start/Stop, or would it suggest both need replacing?

Jul 3rd, 2024, 19:51	#2
deepsix Senior Member Last Online: Today 06:56 Join Date: Sep 2008 Location: Romsey	Pretty sure this will be the small under bonnet battery which has done well to last since 2018. I changed mine in my 2017 V90 a few months ago. Approx £110 from Volvo and plenty of videos on Youtube as to how to swap it. It's a very easy job. No messages ever since changing mine. __________________ 1973 1800ES 2017 V90 CC D5 power pulse. Polestar and lots of toys. I'm a Hornithologist, I love exotic birds.

Jul 3rd, 2024, 21:02	#3
nu11eaf Premier Member Last Online: Today 11:51 Join Date: Mar 2013 Location: Yorkshire man living in County Durham	Just give it a good long charge using the engine bay charge points and see how it goes, they are usually ok after a charge, give it a boost charge every month or two. __________________ XC90 Inscription D5 Power pulse, 2017 MY, Savile grey, Blond Nappa, Leather dash/door tops, Walnut inlays, Dark tinted windows, Air suspension, Bliss/Cross traffic alert, Xenium/7 seat comfort/Family/Winter packs, 4 zone climate, Heated rear seats.

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