Porsche 911 Carrera - Manual (Page 108)

Battery
Dropping battery voltage
If the battery voltage drops abruptly, a warning
message will be displayed by the on-board
computer.
If the warning is displayed by the on-board
computer while the engine is running or while
driving:
Stop the car in a safe place and stop the
engine.
Possible causes
–
Defect in the battery charging system.
– Broken drive belt.
Warning!
Risk of engine damage with resultant loss
of control and accident, leading to serious
personal injury or death. A broken drive belt
means there is no power assistance to the
steering (more effort is required to steer) and
coolant pump function will stop.
Do not continue driving.
Have the fault remedied at the nearest
authorized Porsche dealer.
106
Controls, Instruments