Mercedes-Benz 2003 C 240 4MATIC Operator's Manual page 264

Practical hints
What to do if ...
Display
#
BATTERY/ALTERNATOR
VISIT WORKSHOP!
! (Canada
PARKING BRAKE
only)
RELEASE PARKING BRAKE!
; (USA only)
264
Possible cause
The battery is no longer charging.
Possible causes:
alternator malfunctioning
broken poly-V-belt
You are driving with the parking brake
set.
Suggested solution
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
inoperative water pump which may
result in damage to the engine. Notify
an authorized Mercedes-Benz Center.
If it is intact:
Drive immediately to the nearest
authorized Mercedes-Benz Center.
Release the parking brake
( page 51).