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Practical hints
What to do if …?
Display Possible cause Possible solution
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FRONT TURN SIGNAL, L
CHECK LIGHT
The left front turn signal lamp is malfunc-
tioning.
̈ Replace the bulb as soon as possible.
FRONT TURN SIGNAL, R
CHECK LIGHT
The right front turn signal lamp is malfunc-
tioning.
̈ Replace the bulb as soon as possible.
REAR TURN SIGNAL, L
CHECK LIGHT
SUBSTITUTE LAMP ON
The left rear turn signal lamp is malfunc-
tioning. A substitute bulb is being used.
̈ Replace the bulb as soon as possible.
REAR TURN SIGNAL, R
CHECK LIGHT
SUBSTITUTE LAMP ON
The right rear turn signal lamp is malfunc-
tioning. A substitute bulb is being used.
̈ Replace the bulb as soon as possible.
MIRROR TURN SIG., L
CHECK LIGHT
The left 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 Cen-
ter as soon as possible.
MIRROR TURN SIG., 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 Cen-
ter as soon as possible.