Mercedes-Benz 2003 SLK 230 Kompressor Operator's Manual page 203

Problem
. The yellow exterior lamp failure
indicator lamp lights up while
applying the brake and stays on
until the engine is turned off.
. The yellow exterior lamp failure
indicator lamp remains lit after
starting the engine or lights up
while driving.
i
Additional lighting equipment, if not
properly installed (e.g. auxiliary head-
lamps etc.), could cause the failure in-
dicator monitoring unit to malfunction.
We therefore recommend that an au-
thorized Mercedes-Benz Center install
such equipment for you.
Possible cause
One of the brake lights is malfunctioning.
One of the following lights is malfunctioning:
parking lamp
tail lamp
stop lamp
low beam head lamp
i
If an exterior lamp fails, the indicator
lamp will come on only when that lamp
is switched on.
Practical hints
What to do if ...?
Suggested solution
Visit an authorized Mercedes-Benz
Center as soon as possible.
Replace the bulb as soon as possible
( page 221).
203