Mercedes-Benz S 450 4MATIC Operator's Manual page 689

Practical hints
What to do if ...?
Display
Auto Lamp Function
Inoperative
Check
Rear Left
Turn Signal
Check
Rear Right
Turn Signal
Check
Left Mirror
Turn Signal
688
Possible cause/consequence
The light sensor is malfunctioning. Daytime
driving lamps are switched on.
The left rear turn signal lamp is malfunction-
ing. A substitute bulb is being used.
The right rear turn signal lamp is malfunc-
tioning. A substitute bulb is being used.
The turn signal in the left exterior rear view
mirror is malfunctioning. This message will
only appear if a critical number of light emit-
ting diodes have stopped working.
Possible solution
Contact an authorized Mercedes-Benz Cen-
ter as soon as possible.
To switch off the headlamps (U.S. vehicles only):
Switch off daytime running lamps in the in-
strument cluster control system
( page 306).
Turn the exterior lamp switch to position 0.
Contact an authorized Mercedes-Benz Cen-
ter as soon as possible.
Contact an authorized Mercedes-Benz Cen-
ter as soon as possible.
Have the LEDs replaced as soon as possible.