I also have the same problem ie sometimes the indicators won't work at all. This started several months ago and purely by chance in the past I found turning on the headlamps rectified the problem. Unfortunately on the last occurence - 1 week ago this did not work. However the following morning everything was fine and no problems since.

But I have no confidence and just waiting for the problem to come back. Any assistance would be greatly appreciated.

SLK 200 ( May 2003 )