I hate it when that happens. You have a short or a ground fault. Not
easy to diagnose. If you're handy you need to run over eveyrthing with
a volt meter and/or a ground wire with a bulb and find the electrical
fault. Sometimes it's the turn indicator assembly but not always.
Have you had any aftermarket electronic gear added recently?
These might help:
Need Mercedes parts? http://parts.mbz.org
Richard Sexton | Mercedes stuff: http://mbz.org
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