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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 2007 SL550 engine will not even turn over. I have tried

Customer Question

My 2007 SL550 engine will not even turn over. I have tried both keys and i have jump started it. The start battery shows 14.5 v and registers Full with my battery checker.
JA: Does the engine spark at all? Is there a trouble code or is your "check engine light" on?
Customer: I read the post from a customer who had the same problem with a 2009 SL550. Do you have any other suggestions.
JA: Are you fixing your SL550 yourself? What have you tried so far?
Customer: I have tried jumping, charging the battery, tried both keys, replaced batteries in keys
JA: Anything else you want the mechanic to know before I connect you?
Customer: I had checked a fuse #28 removing and repalcing it just before I tried to start it. The horn had stopped working and i thought it might be the fuse
Submitted: 3 months ago.
Category: Mercedes
Expert:  Lou P. master tech replied 3 months ago.

Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!

Expert:  Lou P. master tech replied 3 months ago.

what is the voltage at the front battery AND the rear battery?

what happens and what turns on when the key is turned on?

Expert:  Lou P. master tech replied 2 months ago.

are you still needing help? i have not heard back from you?

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