Mercedes-Benz G 55 AMG Operator's Manual page 305

Practical hints
What to do if ...
Symbol messages
Display symbol Display message
#
BATTERY/ALTERNATOR
VISIT WORKSHOP!
UNDERVOLTAGE
ENGINE ON!
304
Possible cause
The battery was charged with a battery
charger or jump started.
The battery is no longer charging.
Possible causes:
alternator malfunctioning
broken poly-V-belt
The battery has insufficient voltage.
Possible solution
Have the battery checked at a service
station.
Stop immediately and check the
poly-V-belt.
If it is broken:
Do not continue to drive. Otherwise
the engine will overheat due to an in-
operative water pump which may re-
sult in serious engine damage not
covered by the Mercedes-Benz Limited
Warranty. Notify an authorized
Mercedes-Benz Light Truck Center.
If it is intact:
Turn off unnecessary electric consum-
ers.
Drive immediately to the nearest
authorized Mercedes-Benz Light Truck
Center.
Start the engine.