Quote:
Originally Posted by bangelov
I replaced my emergency battery few days ago and cleared fault memory via ISTA, so far everything works good. It seems that the battery has recharging cycle limitation, because I measured the voltage of the battery after that and it was 8V as per specification, so there was no voltage drop, but I guess some battery recharging cycle restriction.
This is a video about how to replace emergency battery, it is for 340i but also applicable for G30
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Yes i found this too,if you changed the battery on your G30 do you need to put down the headliner ?