Mercedes-Benz 2008 C-Class Operator's Manual page 415

Practical hints
What to do if ...?
Display
.
Check
Left Mirror
Turn Signal
Check
Right Mirror
Turn Signal
Switch Off Lights
Turn Lights Off
Or
Remove Key
414
Possible cause/consequence
The turn signal in the left exterior rear view
mirror is malfunctioning. This message will
only appear if all light emitting diodes have
stopped working.
The turn signal in the right exterior rear view
mirror is malfunctioning. This message will
only appear if all light emitting diodes have
stopped working.
You are getting out of the vehicle and the
lights are still switched on.
The exterior lamp switch is set to * and
you have forgotten to take out the
SmartKey. The parking lamps remain
switched on.
Possible solution
Have the LEDs replaced as soon as possible.
Have the LEDs replaced as soon as possible.
Switch off the headlamps ( page 108).
Switch off the headlamps ( page 108).
or
Remove the SmartKey from the starter
switch.