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I have electrical problems with my mercedes 1990 300e. Fusil
I have electrical problems with my mercedes 1990 300e. Fusil # 3 … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Have a 1988 300E with about 142,000 Miles. It has a Check
Have a 1988 300E with about 142,000 Miles. It has a Check Engine Light problem. The CEL comes on after 3 minutes and turns on and off when driving. It Shows 30 Flashes on port #7 (COOLANT CIRCULATION … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Mercedes-Benz C230: My 1997 Mercedes model C230 serial # XXXXX
My 1997 Mercedes model C230 serial # XXXXX air conditioner clutch will engage for only 1-2 minutes and the electric radiator fan will come on for the same amount of time on low speed only, and then sh… read more
Hipo64
Hipo64
Mercedes Technician
High School or GED
444 satisfied customers
300e: i have a 92 300e Vin#WDBEA26D5NB737553 and my radio is
i have a 92 300e Vin#WDBEA26D5NB737553 and my radio is locked I need the code for the radio and how would i install it… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Mercedes S420: I have a 1994 s420 MB. The check engine light
I have a 1994 s420 MB. The check engine light is on. In trying to read the code from the LED light next to the 38-pin adapter housing, it doesnt blink out any codes. It just stays lit while holding it… read more
Chris (aka- Moose)
Chris (aka- Moose)
Vocational, Technical or Trade School
51,582 satisfied customers
300E 4MATIC: I HAVE A 1990 300E 4MATIC SEDAN(230K). THE 4 WHEEL
I HAVE A 1990 300E 4MATIC SEDAN(230K). THEXXXXXICON IN THE CENTER OF THE SPEEDOMETER (LIGHTS UP ORANGE) COMES ON ONLY AT SPEEDS 55MPH & HIGHER. I HAVE REPLACED THE LEFT & RIGHT FRONT WHEEL SPEED SENSO… read more
Chris (aka- Moose)
Chris (aka- Moose)
Vocational, Technical or Trade School
51,582 satisfied customers
ground..red lite in the actuator switch came on steady.
I connected the wire from #10 pole to ground # XXXXX pole. The red lite in the actuator switch came on steady. I pulled the wire after 10 sec between #10 and #1 and the switch had no change. Still fla… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1991 Mercedes 300TE: a check engine light..emissions..module..steady
How can I read and clear a check engine light on my 1991 Mercedes 300TE w/California emissions. I have tried to use the LED module w/ the push button, but when I press the button the LED just stays on… read more
Stan
Stan
Technical support engineer
Bachelor's Degree
3,418 satisfied customers
Sorry, ths si my first time and I didnt see the answeres worked.
never mind, I found it. Sorry, ths si my first time and I didn't see the answeres worked. I was waiting for an email answer, and that's noth ow it works. I'll try the fuse in the relay,… read more
Don - Mo Lurch
Don - Mo Lurch
Owner
Vocational, Technical or Trade Scho
10,643 satisfied customers
1986 mercedes 300e: no spark to the plugs i changed the coil
my 1986 mercedes 300e has no spark to the plugs i changed the coil 3 times and nothing can you help me… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1990 Mercedes Benz: My car will not blow heat on occasion, and when it
I have a 1990 Mercedes Benz 300E. My car will not blow heat on occasion, and when it does it's not when I expect it. What is the problem?… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
2002 C320: electronic car key..my car, unlock the doors or anything
I have a 2002 C320. I accidently hit the little red panic botton on my black electronic car key and now I can't access my car, unlock the doors or anything. How do I de-activate whatever I did so I ca… read more
Victor MB
Victor MB
Vocational, Technical or Trade Scho
204 satisfied customers
300E: Engine warning light..tried by disconnecting battery
1990 MZB 300E Engine warning light on. Code blips #17 What code is this and how do I reset the warning light. I have tried by disconnecting battery for a minute..… read more
MBTim
MBTim
Master Technician
Vocational, Technical or Trade Scho
70 satisfied customers
Mercedes: engine light..it needed a egr Valve- it blinked 14 times
I have a 1990 300 CE Mercedes. The engine light is on. When we pushed the buttons it blinked 5x. ( I saw the mechanic do this before when the light was on and it needed a EGR Valve- it blinked 14 time… read more
Mike
Mike
Proprieter / Diagnostic Technician
High School or GED
19,717 satisfied customers
1989 300te: intermittent cel light flickers..relay..fuel filter
1989 300te mercedes. intermittent CEL light flickers..when it flickers the engine runs rough - flickers when cold, hot or inbetween. we have replaced overload protection relay, full tuneup, and fuel f… read more
MBTim
MBTim
Master Technician
Vocational, Technical or Trade Scho
70 satisfied customers
92 mercedes 200: spark..any info on the ignition system..trouble shoot
my friend has a problem with his 92 Mercades 300 TE. The main problem is that it is not getting any spark. But I can't get any info on the ignition system, or how to trouble shoot it. Can you help...p… read more
AbloW_MB
AbloW_MB
Automotive Technician
Vocational, Technical or Trade Scho
1995 E420: a dm code of 20 (led blinks 20 times), what
I have a 1995 E420 with a dm code of 20 (led blinks 20 times), what is the most probable cause??… read more
MBZ TECH
MBZ TECH
MERCEDES TECH,TEAM LEADER/TRAINER
High School or GED
32 satisfied customers
my break light does not work after I pressed the brake even ...
my break light does not work after I pressed the brake even though my tail light is on..I also have this problem: the coolant temperature,fuel,and oil presure gauges stop working ........are both prob… read more
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Expert
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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

6,527 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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