AGM batteries are used for the voltage supply in the G30.
There may by 1, 2 or 3 batteries in the vehicle depending on the engine version
and vehicle
equipment.
Starter battery in the luggage compartment with 90 Ah or 105 Ah.
Auxiliary battery in the engine compartment with 50 Ah
LIN-Bus
For a better overview, the LIN buses are divided up between several wiring
diagrams for the G30.
LIN bus overview in the door area
LIN-Bus
Body Domain Controller (BDC)
Exterior mirror, front passenger side
Memory seat, front passenger's side
Power window electronics, passenger's side