I have a 2007 E350 Mercedes Benz and check engine is coming on. I have had it back to the Mercedes dealership for repair and the problem has not been solved. What could be the problem?
If car run,s normal,may just be a sensor,bad,but if the dealer can,t run a scan on it,and find the issue,you may need to find another dealer,if no code,s are present,then all they have to do,is clear it with the scanner.
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