A warning for loose gas cap came on 2 different times. after the second time check engine light came on. Was wondering what might be the problem.
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2007 Mercedes-Benz R350 Question: warning message stating gas cap not on w/ check engine light
Answer #1JParsons June 07, 2010, 14:28Journeyman
Were you getting gas with the engine running when the light came on? If so, that will trigger the gas cap warning and could possibly set a check engine light. Other wise the gas cap could just be bad and not sealing properly. Your Mercedes-Benz dealership will be able to check your code/codes for you, diagnose the problem, and repair it. Here is a link to help you find the closest service center: http://repairpal.com/directory.