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Parked car to go into supermarket it was working fine. When
parked car to go into supermarket it was working fine. When I got back to the car I opened the doors via the FOB the radio & lights turned on, but the car won't start, nor will the steering wheel unlo… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
I guess I ran my battery down.(I think I accidentally left
Hi, I guess I ran my battery down.(I think I accidentally left my dome light on for 2 days. When I went to start my car, the key wouldn't even turn over. I tried jumping the battery, then I charged th… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
MB 2010 C300 suddenly has no power, no light. Not a single
MB 2010 C300 suddenly has no power, no light. Not a single sound when trying tp start. The car is in Park position and the steering wheel is locked … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
My 1999 Mercedes SLK 300 alarm went off last night. Now
My 1999 Mercedes SLK 300 alarm went off last night. Now neither the key fob nor the valet key will unlock the doors to get in. … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
I have a C300 4matic Sport. When I turn the fob nothing
I have a C300 4matic Sport. When I turn the fob nothing happens at all. Everything else seems to work, that is the electronics. I put a new battery in. The ols one was reading 11.9 volts. … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
I have a 2011 c300 was working on the radio so i unplug the
Hi I have a 2011 c300 was working on the radio so i unplug the Battery for about 10 minutes and plug it back now it is not starting no crank everything else is normal.... any ideal...... … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,844 satisfied customers
2010 C300: Last night I drove home from work & all is fine.
2010 C300: Last night I drove home from work & all is fine. came back out about 30 minutes later to leave & the engine will not respond & the instrument panel states to "remove key from ignition" I ch… read more
Gunvir Singh
Gunvir Singh
1,949 satisfied customers
My 2010 Mercedes C300 suddenly doesn't work. I can't arm or
Hi, my 2010 Mercedes C300 suddenly doesn't work. I can't arm or unarm the car. The dashboard doesn't even light up. When I tried to jump start the car, that still doesn't work. I can't even lock the c… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
2010 mercedes c300 4matic wont start. remote seems to work
2010 mercedes c300 4matic wont start. remote seems to work as it locks and unlocks door but it wont start the engine. Trying to determine if it is a battery problem? … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Mercedes C300 driven and parked in our garage last night. 5
Mercedes C300 driven and parked in our garage last night. 5 minutes later, tried to start it, and could not. Dash lights come on, but no chime, absolutely no sounds when turning the key, headlights wo… read more
BOBBYSS
BOBBYSS
Automotive Repair/Damage Investigator
Associate Degree
14,564 satisfied customers
C300: Good Morning. I have a 2008 C300 and was running fine
Good Morning. I have a 2008 C300 and was running fine untill last night. and now will not start, The last thing I did was pop the sunroof up for ventalation over night. This morning, I put the key in … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
C300 sport: Went to drive in last night, we have 09 C300 sport
Went to drive in last night, we have 09 C300 sport class. The car would not start at first we thought it was the battery. After trying to jump start it did not work. When turning the key their is just… read more
sprinkles08
sprinkles08
Technician
High School or GED
18,057 satisfied customers
C300: Plz help diagnose my problem. I hv a 2008 C300. It drives
Plz help diagnose my problem. I hv a 2008 C300. It drives well I was riding all day with no problems I got out and immediate got back in. The car wouldn't start but AAA said battery had plenty of fire… read more
sprinkles08
sprinkles08
Technician
High School or GED
18,057 satisfied customers
C300 4Matic: I have a 2008 Mercedes C300 4Matic, Ill keep
I have a 2008 Mercedes C300 4Matic, I'll keep it short and direct, I drove to work one morning (unusually cold single digits) and parked it a parking garage, after 8hrs. I attempted to start the car, … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
29,889 satisfied customers
2008 mercedes: key fob didnt unlock doors used..wouldnt start
2008 mercedes c300. key fob didnt unlock doors used key in end of FOB. alarm went off car wouldnt start . after about 30 minutes the car reset itself and off I went? is this normal?… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
29,889 satisfied customers
08 c300 mercedes will not crank..not battery.turn key lights come on.
08 c300 mercedes will not crank..not battery.turn key lights come on. nothing happens.not fuses under hood or fuses in trunk… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
29,889 satisfied customers
02 s430: passenger door..When I drove..instrument panel..restarted
Last night a Valet was dropping our '02 s430 at the door, was attempting to unlock the passenger door when a loud steady electronic squeal emitted for about 5 seconds. When I drove away, the entire in… read more
Stan
Stan
Technical support engineer
Bachelor's Degree
3,418 satisfied customers
Keyless..spare key..the key remote would lock and unlock the doors
2009 e 350 4 matic P2, I backed into a parking space turned off the car using the keyless -go returned about 8 hours later got in tried the key-less go nothing. tried puting the key in nothing , note:… read more
MB Paul
MB Paul
Mercedes Technician
Vocational, Technical or Trade Scho
3,567 satisfied customers
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Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

Mercedes Technician

29,460 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

4,460 satisfied customers

20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,132 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

643 satisfied customers

Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

mercedes diagnostic technician

553 satisfied customers

Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

Mercedes Technician

444 satisfied customers

Work and diagnose electronics on daily basis.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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