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Practical hints
What to do if …?
Display Possible cause Possible solution
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LIGHT SENSOR
VISIT WORKSHOP!
The lamp sensor is malfunctioning. The
headlamps switch on automatically.
̈ In the control system, set lamp oper-
ation to manual (
୴ page 136).
̈ Switch on headlamps using the exte-
rior lamp switch.
BRAKE LIGHT
VISIT WORKSHOP!
Brake lamp illumination is delayed or lamp
is permanently on.
̈ Visit an authorized Mercedes-Benz
Center as soon as possible.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The display for the lamps or the system is
malfunctioning.
̈ Visit an authorized Mercedes-Benz
Center as soon as possible.
TURN OFF LIGHTS!
Lamps have been turned on although the
key in the starter switch is in position 0.
̈ Turn off the lights.
TURN SIG. MIRROR, L
CHECK LIGHT!
The left turn signal in the side mirror is mal-
functioning. This message will only appear
if all light emitting diodes have stopped
working.
̈ Visit an authorized Mercedes-Benz
Center as soon as possible.
TURN SIG. MIRROR, R
CHECK LIGHT!
The right turn signal in the side mirror is
malfunctioning. This message will only ap-
pear if all light emitting diodes have
stopped working.
̈ Visit an authorized Mercedes-Benz
Center as soon as possible.
TURN SIG., LF
CHECK LIGHT!
BACK-UP LIGHT ON!
The left front turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
̈ Replace the bulb as soon as possible.