Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
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This can be due to a short in the hazard switch itself.I have seen the hazard switch fail/short out internally before needing replaced to correct this type of fault here.I would have the switch tested/checked to see if it needs replaced.This in some cases needs tested with a multi meter and a scan tool compatible with this model to observe the hazard switch status/signal to see if it needs replaced for sure.
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