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Michael Hannigan
Michael Hannigan, Engineer
Category: Car Electronics
Satisfied Customers: 11819
Experience:  25+ Years Experience in Field. Master Certified Electronics Tech and Technical Consultant
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2009 SL550 Radio DVD ETC Turns off and on by itself about

Customer Question

2009 SL550 Radio DVD ETC Turns off and on by itself about every minute. Thanks in advance for your feed back Michael car has 39000 miles no other lights or issues
Submitted: 1 year ago.
Category: Car Electronics
Expert:  Michael Hannigan replied 1 year ago.

Hello. My name is***** can help you with your question.

The most likely cause of this is that one of the wires from the wiring harness has rubbed against something metal over time and has shorted against the chassis causing it to either turn off Or lose ground. The only with diagnosis really is to remove the head unit and then check the continuity of the wires in the harness. Usually if this is the case, you can visually spot the problem without having to test all wires, But not always.