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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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My 2010 c300 wont start, the lights come on , but the dash

Customer Question

my 2010 c300 wont start, the lights come on , but the dash lights or rado will not come on either
JA: Does the engine turn over? How old is the battery?
Customer: I just bought a new battery today
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: just bought a new battery and one guy at mercedez told me to put the key into the truck , unlock the trunk then try to start the car and it should work?>
JA: Huh?
Customer: you asked if I tried to trouble shoot.
JA: Anything else you think the mechanic should know?
Customer: i stated that i bought a new battery
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mercedes Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Mercedes
Expert:  Eric replied 1 year ago.


Which battery did you replace - the auxillary battery or the starting battery?

Did you use any saver or battery minder to keep voltage to the various control modules?