Mercedes

Have Mercedes Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Mercedes

I have a 1999 Mercedes sl500. Engine turns over but no

Customer Question
start . There seems to...
I have a 1999 Mercedes sl500. Engine turns over but no start . There seems to be no spark or fuel pressure. I have compression. Scan tool recovered no codes. I read that the crankshafts sensor can cause this problem. That did not fix my problem. Did not change out ecm yet. Am trying to repair my self but I don't want to blow money guessing . Any help please
Submitted: 1 year ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 1 hour by:
11/28/2015
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 54,178
Experience: Bosch Certified Master Tech. Over 35 years experience.
Verified

Hi, my name is***** stated that there seems to be no spark or fuel pressure. Have you actually tested for spark and tested the fuel pressure?

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
I held one of the spark plug wires close to chassis . No spark. I also press the valve in on the fuel rail. Gas sip out . No pressure. Could not here fuel pump running.
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago

You may not be getting power to the ECM. Check the fuses in the base module located in the module box under the hood on the passenger side. Check for any blown fuses and see if all of them have 12V with the key on. Also test for voltage to the ignition coils with the key on.

Let me know what you find.

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
There is a voltage present at coils with ignition on. Will check what you said in the control box next.
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago

Hi, just checking in with you on the Mercedes. What did you find so far?

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
I, m out off town It will be Thursday 12/3/15 before I can make those checks. Thanks
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago

Thanks for the update. I'll wait to hear from you.

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
I did get 12 volts across all 3 fuses in the control box with ignition on
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago

Do you have the red and green lights in the interior rear view mirror on this car?

Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Do not see red and green lights in mirror. It appears to be what looks like a sensor in the right corner. Three control buttons on the bottom left of mirror
Ask MB Paul Your Own Question
MB Paul
MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3,567
3,567 Satisfied Customers
Experience: Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

MB Paul is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

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

54,178 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

3,502 satisfied customers

15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,131 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

591 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

443 satisfied customers

Work and diagnose electronics on daily basis.

< Previous | Next >

Related Mercedes Questions
2003 SL500, top will not go up, as soon as I pull the lever
2003 SL500, top will not go up, as soon as I pull the lever the dash says visit workshop … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,502 satisfied customers
The top on my 2003 SL500 is giving me some problems. I am
The top on my 2003 SL500 is giving me some problems. I am sure it is low on fluid and perhaps has a leak in one or more of the hydraulic actuators. But I am unable to search for any leaks unless I can… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,502 satisfied customers
I have a 2006 sl500 when the car starts the SRS warning
I have a 2006 sl500 when the car starts the SRS warning comes on and a popping sound is heard behind the seat . It goes off after a little while . Whats up with my car? … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
0 satisfied customers
Looking for location of abc control unit. 2003 sl500.
looking for location of abc control unit. 2003 sl500. wdb2304752F086201 … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,502 satisfied customers
I have a 2005 SL500.The brake light in the instrument
I have a 2005 SL500.The brake light in the instrument cluster stays on,the brakes have been checked and are fine.By pushing the menu button the light will go out,how do I correct this … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,502 satisfied customers
My 2003 sl500 is having problems with the horn in that when
hi. my 2003 sl500 is having problems with the horn in that when it is honked it does not go off unless I shut off the ignition. I picked up a horn relay but cannot figure out if it is the correct one … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
2005 SL500 door panel removal. I need to remove door panel
Yes, I need to remove door panel to replace broken door handle spindle. … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,502 satisfied customers
1988 300e no power to coil. None. Pulling spark plugs.12
1988 300e no power to coil JA: Is the power loss consistent, or does it fluctuate? Customer: none JA: Are you fixing your 300E yourself? What have you tried so far? Customer: pulling spark plugs.12 te… read more
Marty
Marty
Mercedes Technician
54,178 satisfied customers
1997 SL500 swicthblade key fob won't lock/unlock doors. The
1997 SL500 swicthblade key fob won't lock/unlock doors. The red led on the FOB lights, but the receivers don't respond...… read more
Marty
Marty
Mercedes Technician
54,178 satisfied customers
The car will not unlock. 2004 sl500. Calling my husband ha
the car sat on a trickle charge for the summer but we have been driving it on the highway this week to fully charge the battery… read more
Marty
Marty
Mercedes Technician
54,178 satisfied customers
Spark plug gap? Smart Passion 2014. Am ready to install new
yes, am ready to install new plugs but need to verify plug gap … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
0 satisfied customers
I HAVE A 1997 SL500 THAT IS IMMACULATE. HOWEVER, AFTER
HOWEVER, AFTER HAVING A NEW BATTERY INSTALLED AND MAJOR CHECKUP ON ALL SYSTEMS WHICH TURNED OUT GREAT AT THE DEALER, AND LETTING THE VEHICLE SIT IN MY GARAGE FOR 4 MONTHS, IT WOULDN'T EVEN CRANK, SO I CHARGED THE BATTERY OVER A FEW DAYS WITH THE CHARGER: C TEC (SPELLING). BUT NOTHING BE SILENCE AND THE BATTERY CHECKS OUT STRONG. HAD THE STARTER CHECKED, AND IT IS FINE? SO NOT SURE THE SOURCE OF THE ISSUE. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I have a 2005 sl500 that the door on the drivers side does
I have a 2005 sl500 that the door on the drivers side does not actuate when you push the key fab. The interior door looks works perfectly. … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,502 satisfied customers
What is the spark plug gap for a 79 450SL, I put in all new
I put in all new injectors and sleeves plus rebuilt the fuel distribution block and now it won't fire.… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I changed the spark plugs on my 04 C240 and after doing so
Hello , I changed the spark plugs on my 04 C240 and after doing so the car had no power. I checked for spark at each plug, witch it had. then i replaced the plugs with a new set. … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
Lou should I replaced spark plugs while valve covers off?
Lou should I replaced spark plugs while valve covers off? Because I wanna blow first deep inside… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,502 satisfied customers
1994 SL500 drivers seat moved all the way forward and will
1994 SL500 drivers seat moved all the way forward and will not move back … read more
Mechanic01
Mechanic01
1,164 satisfied customers
I have a problem with my 1999 SL500 FOB key. It does not
I have a problem with my 1999 SL500 FOB key. It does not work. The batteries have been replaced, the FOB has been taken apart by a technician and it still doesnt work. The technician says that it migh… read more
Shawn Few
Shawn Few
AS
65 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x