Mercedes-Benz 2003 E 320 Operator's Manual page 304

Practical hints
What to do if ...
Display
#
Undervoltage
Switch off
consumers
–
Battery/Alternator
Visit workshop!
304
Possible cause
The battery has insufficient voltage.
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
Do not forget that the brake system re-
quires electrical energy and may be operat-
ing with restricted capability. Considerably
greater brake pedal force is required and
the stopping distance is increased.
Suggested solution
Turn off unnecessary electrical con-
sumers.
Have the battery checked at a ser-
vice station.
Stop immediately and check the
poly-V-belt.
If it is broken:
Do not continue to drive. Notify
an authorized Mercedes-Benz
Center.
If it is in order:
Drive immediately to the nearest
authorized Mercedes-Benz Cen-
ter. Adjust driving to be consis-
tent with reduced braking
responsiveness.