Mercedes-Benz 2005 M-Class Operator's Manual page 254

Practical hints
What to do if ...
Problem
¿
The yellow BAS/ESP malfunc-
tion indicator lamp comes on
while driving.
!
When synchronizing the ESP, make
sure you can turn the steering wheel in
both directions as far as it will go with-
out the wheels hitting any objects, e.g.
a road curb.
252
Possible cause
The ESP is no longer synchronized following
a voltage supply interruption (e.g. battery dis-
connected or discharged).
Suggested solution
Synchronize the ESP:
With vehicle stationary and the engine
running, turn the steering wheel
completely to the left and then to the
right.
If the BAS/ESP indicator lamp does not
go out:
Continue driving with added caution.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as possi-
ble.
Failure to follow these instructions
increases the risk of an accident.