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[SwissXC90]

Originally Posted by Lexman8

Not sure where the VCM is located (might be in the boot) but you really don't want to mess with this module. A replacement unit will cost ~£1,500.

It will be located in a central part of the vehicle to increase it's survivability in case of a crash.

If the VCM contains the VoC subsystem, then it is a critical life-saver device, and it needs to survive as tough a crash as possible.

[Zayynn12]

Originally Posted by Lexman8

I've done some more checking and the VoC backup batteries are located within the VCM (Vehicle Comms Module), see pic. They appear to be non-rechargeable lithium cells.



Not sure where the VCM is located (might be in the boot) but you really don't want to mess with this module. A replacement unit will cost ~£1,500.



Actually, that may not be unreaonable given the time it'll take to access the module, replace the batteries, put it back together and test the system.
_

Hi Lexman I’ve found the VCM unit it was not hard at all, but at the time I thought it did not contain the battery, however I’ll go and have a look later on, if I do manage to get another battery from the dealership do you know if the car needs to be reset to show it’s had a new battery in

[Lexman8]

I don't know for sure but it's likely that the error code will have to be cleared by the dealer.

Like I said, be careful with the VCM. I've had two replacement units fitted, both under warranty, but the dealer told me the cost. Also, the VCM has undergone at least one major revision so check that the battery config in your unit is still the same arrangement as shown.

[Ballistic87]

Originally Posted by Lexman8

I don't know for sure but it's likely that the error code will have to be cleared by the dealer.

Like I said, be careful with the VCM. I've had two replacement units fitted, both under warranty, but the dealer told me the cost. Also, the VCM has undergone at least one major revision so check that the battery config in your unit is still the same arrangement as shown.

Hi there mate. Just browsing through some threads and you seem to know your stuff. Must people on here just recommend going to the dealership which wont be possible in my case as I’m not unde warranty.

My car has been involved in a collision and now won’t start. There is power to the dash, windows seats etc. But no crank or any reaction when pushing start.

Do you have any tips as to were o should start looking? I checked the battery and the pyrotec fuse looks to be ok. Anything you could reccomend?

[Clan]

Originally Posted by Ballistic87

Hi there mate. Just browsing through some threads and you seem to know your stuff. Must people on here just recommend going to the dealership which wont be possible in my case as I’m not unde warranty.

My car has been involved in a collision and now won’t start. There is power to the dash, windows seats etc. But no crank or any reaction when pushing start.

Do you have any tips as to were o should start looking? I checked the battery and the pyrotec fuse looks to be ok. Anything you could reccomend?

Get it towed to the dealer who will reset the crash sensor .. there should be some kind of message in the dash ..

[jarhead1]

Where is the location of the VCM in 2015 S60?

[jarhead1]

Do you know where the VOC backup battery is located?

[jarhead1]

Originally Posted by Lexman8

I've done some more checking and the VoC backup batteries are located within the VCM (Vehicle Comms Module), see pic. They appear to be non-rechargeable lithium cells.



Not sure where the VCM is located (might be in the boot) but you really don't want to mess with this module. A replacement unit will cost ~£1,500.



Actually, that may not be unreaonable given the time it'll take to access the module, replace the batteries, put it back together and test the system.
_

Do you know where the VCM is located?

[Lexman8]

Originally Posted by jarhead1

Do you know where the VCM is located?

Sorry, I don't know.

[WaylanderUK]

The batteries in the VCM backup cell are not standard lithium Ion, they are made by Tadrian and are very unusual in the fact they are 8v not the 7.2v provided by standard lithium cells

The replacement battery is £113 and it is located in the VCM which is behind the right hand side rear trim about half way down the rear side window, it’s a bit of a mission to get to but diy replaceable
Part number for 2017 xc90 3145445