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Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53151
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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350mL: I was driving and parked. All power was gone when I

Customer Question

I was driving and parked. All power was gone when I attempted to start again. The key would not turn, no horn, no lights. Just a sos beeping. Could the battery go totally dead without any warning?
Submitted: 1 year ago.
Category: Mercedes
Expert:  Marty replied 1 year ago.
Hi, welcome to Just Answer. My name is***** this does sound like a sudden battery failure. It is not unusual for a battery to fail this way. I would connect jumper cables to the jumper terminals under the hood and see if you get power to the vehicle. If you do I would say that the battery has failed and will need to be replaced. The output of the alternator should also be tested.

Let me know if you have any questions.

Marty

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