Volvo on call service required

[Zayynn12]

Hi there fellas

I obviously don’t expect a reply to my question in this public forum so any private messages would be greatly Appreciated.


So I’ve recently just snapped up a Volvo V90 19 plate and after having the battery off and then reconnecting it I’ve got a “Volvo in call service required” error on the dash. Now Ive got Volvo assistance to come out but they couldn’t find any faults so then the dealer told me to bring it in to see if they can fix it on the spot.

turns out it was unplugged for too long and that completely depleted the backup battery. Now because I’ve taken off the battery they won’t cover it under warranty.
They’ve priced me up at £93 for the module and about 200 odd quid for labour + vat.
Does anyone know where this back up battery is located and if it’s possible to recharge them somehow- I don’t mind paying for a new battery but 200 odd for labour is a rip off.


I was actually quite surprised as the tech told me that the battery was disconnected 3 days ago and that the main battery has only ever been fully charged once so it got me wondering what else does the software show up :blink:

Got it on charge overnight but does anyone know where these modules are located

[b1mcp]

This is not the correct section of the forum for your car. You will get a better response if you post in here

https://www.volvoforums.org.uk/forumdisplay.php?f=201


Having said that, it sounds ridiculous that disconnecting your battery for 3 days can result in a module failure. I find it difficult to believe that Volvo would design something like that. But maybe car's have "advanced" so much that I'm out of touch.

[SwissXC90]

Originally Posted by Zayynn12

Does anyone know where this back up battery is located and if it’s possible to recharge them somehow- I don’t mind paying for a new battery.

The battery is inside the on-call module itself, as the on-call module is designed to be autonomous in case of a car crash disconnecting vehicle battery / speaker / microphone / antenna.

It is an ultra long life battery, I believe it is non-rechargeable.
Once flat, it needs replacing.
And the battery health indicator needs resetting, and for this you need the dealer software.

According to Wikipedia, a "19 plate" car was first registered in 2019-2020.

This means it could be a MY2018, MY2019 or MY2020 vehicle.
I don't have any data on module locations on these cars, but often the on-call module is located centrally in the dashboard in an area where it will be least likely damaged in a crash.