11-24-2024, 02:48 PM
Hi!
Have had similar failure with mild hybrid where ISGM ecu 12v supply wire failed in connector below engine bay fuse box and it ended up with replacing brand new MVBM(medium voltage battery module) in trunk. There is protection built in MVBM when voltage even on one cell drops below limit it locks up MVBM and it cant be unlocked. Its stupid as many other things.. trust me i know..
I still managed to get used MVBM adapted to vehicle and got everything working without any faults but since serial number from new (used) one did not match with the one in volvo servers then there was not possible to make upgrades to vehicle.
Have had similar failure with mild hybrid where ISGM ecu 12v supply wire failed in connector below engine bay fuse box and it ended up with replacing brand new MVBM(medium voltage battery module) in trunk. There is protection built in MVBM when voltage even on one cell drops below limit it locks up MVBM and it cant be unlocked. Its stupid as many other things.. trust me i know..
I still managed to get used MVBM adapted to vehicle and got everything working without any faults but since serial number from new (used) one did not match with the one in volvo servers then there was not possible to make upgrades to vehicle.