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Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53313
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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Marty,just changed the relay behind the battery, now car is

Customer Question

Hey Marty,just changed the relay behind the battery, now car is dead nothing no dash lights nothing, a small hum when the key is part way on what do I do now
Submitted: 1 year ago.
Category: Mercedes
Expert:  Marty replied 1 year ago.

Hi, have you checked the battery voltage? If you have a 12 volt battery I'd inspect and clean the fuses. If you don't have a 12 volt battery I'd try a jump start.