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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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I have 2007 ML350. It will not crank. Checked relay "I", it

Customer Question

I have 2007 ML350. It will not crank. Checked relay "I", it is not being activated. This was a sporadic problem. After trying a few times, it would crank and start. Now it won't crank at all.
JA: How many miles are on the car? Has the car been starting normally?
Customer: About 73k. Starting normally till now
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Depends. checked the starter relay "I". The coil is not getting juice when the key is turned to crank.
JA: Anything else you think the mechanic should know?
Customer: I think that's it. There are no error codes, all the lights on the dash are as they should be
Submitted: 4 months ago.
Category: Mercedes
Expert:  Chad Farhat replied 4 months ago.

Hi, I'm Chad ,Welcome To JustAnswer, I'm reviewing your question and I will be be posting a replay ASAP

Expert:  Chad Farhat replied 4 months ago.

do you have one or 2 keys ?

is there a red security light on or flashing on the dash while you trying to start it ?

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Customer: replied 4 months ago.
2 keys, both behave the same. No security light on
Expert:  Chad Farhat replied 4 months ago.

have you done a diagnostic scan & retrieved any fault codes ?

Expert:  Chad Farhat replied 4 months ago.

and if you have ,was a code reader or Mercedes scanner or equivalent was used ?

Customer: replied 4 months ago.
No scan, no codes. This was an intermittent problem for about a week, where removing and reinserting the key would get it started. Now it will not crank at all
Expert:  Chad Farhat replied 4 months ago.

do you mean no scan was performed or it was and no codes was found?

Customer: replied 4 months ago.
No scan was performed
Expert:  Chad Farhat replied 4 months ago.

it could be a number of things , get it scanned and post the fault codes back here.other than that we will be guessing .

Customer: replied 4 months ago.
ok
Expert:  Chad Farhat replied 4 months ago.

ok cool , let me know, i m online daily 10 til 12 pm

Chad