202 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
#
The red charge indicator lamp 
lights up while the engine is 
running.
The battery was charged with a battery 
charger or jump started.
Have the battery checked at a service 
station. 
The battery is no longer charging.
Possible causes:
alternator malfunctioning
one of the two poly-V-belts is broken
Stop immediately and check the 
poly-V-belts.
If one is broken:
Do not continue to drive. Otherwise 
the engine will overheat due to an in-
operative water pump which may re-
sult in damage to the engine. Notify 
an authorized Mercedes-Benz Center.
If it is intact:
Drive immediately to the nearest 
authorized Mercedes-Benz Center.
2
The yellow brake pad wear indi-
cator lamp lights up while brak-
ing.
The brake pads have reached their wear limit.
Have the brake pads replaced as soon 
as possible.
!Brake pad thickness must be visually 
checked by a qualified technican 
at the intervals specified in the Service 
booklet.