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Practical hints
What to do if …?
Problem Possible cause Suggested solution
- The yellow ABS malfunction indi-
cator lamp comes on while driv-
ing.
The ABS has detected a malfunction and has
switched off. The BAS and the ESP are also
switched off (see messages in display).
The brake system is still functioning normally
but without the ABS available.
̈ Continue driving with added caution.
Wheels will lock during hard braking,
reducing steering capability.
̈ Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
Failure to follow these instructions in-
creases the risk of an accident.
The charging voltage has fallen below
10 volts and the ABS has switched off.
̈ When the voltage is above this value
again, the ABS is operational again.
̈ If necessary, have the generator and
battery checked.
l The red DTR indicator lamp lights
up while driving.
You are too close to the vehicle in front of you
to maintain selected speed.
̈ Apply the brakes immediately to in-
crease the following distance.
l The red DTR indicator lamp
comes on while driving and you
hear a warning sound.
ț You are gaining too rapidly on the vehicle
ahead of you.
ț The distance warning system has recog-
nized a stationary obstacle on your prob-
able line of travel.
̈ Apply the brakes immediately.
̈ Carefully observe the traffic situation.
You may need to brake or maneuver
to avoid hitting an obstacle.