Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have an SL 500 Mercedes. Today when I was driving I lost…

Customer Question
Hi, I have an...

Hi, I have an SL 500 Mercedes. Today when I was driving I lost acceleration even though I was pressing on the gas. I had to turn the car off and restart it and then it started working as normal. Later today on my way home the check engine light came on. As I was pulling into my driver to park into my parking space, I switched gears into reverse and felt a huge kick back from the engine, kind of hard to describe but it happened again when I switched to drive to pull forward.

Mechanic's Assistant: Does the light stay on, or does it blink?

It stays on and is yellow color.

Mechanic's Assistant: What year is your SL?

2003

Mechanic's Assistant: Are you fixing your SL yourself? What have you tried so far?

I haven't tried anything.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No that's about it

Submitted: 1 year ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 17 minutes by:
8/4/2017
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 55,291
Experience: Bosch Certified Master Tech. Over 35 years experience.
Verified
Hi, my name is***** you lost the throttle response you more than likely have a fault with the accelerator pedal position sensor. You will need to get the car connected to a Mercedes scan tool to read out the fault codes in the engine and the transmission control modules. The harsh shift can be caused by the accelerator problem. There are other possibilities such as a fault with the throttle actuator or with the transmission control system but since you lost throttle response I'm inclined to think you have a problem with the pedal position sensor.
Let me know if you have any questions.
Marty
Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Ok, but would that trigger the check engine light to come on?
Customer reply replied 1 year ago
The check engine light now stays on the dash, it is yellow but it isn't flashing. The engine isn't overheating either.
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago
it will definitely trigger the check engine light.
Ask Your Own Mercedes Question
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago
The light is just telling you that a malfunction has occurred and a fault has been stored in the engine control module.
Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Oh ok, I am taking in to get checked out tomorrow. So what you are saying is that they should be able to figure out what is wrong by hooking it up to the computer?
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago
Correct
Ask Your Own Mercedes Question
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago
The fault codes will point to the problem.
Ask Your Own Mercedes Question
Customer reply replied 1 year ago
Okay. Sounds good. I'll follow up with ya tomorrow and let you know what I found out, I might need a second opinion.
Mercedes Mechanic: Marty, Mercedes Technician replied 1 year ago
Sounds good.
Ask Your Own Mercedes Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a mercedes mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Marty Your Own Question
Marty
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 55,291
55,291 Satisfied Customers
Experience: Bosch Certified Master Tech. Over 35 years experience.

Marty 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

55,291 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.

< Previous | Next >

Related Mercedes Questions
Marty, Replaced the fuel filter and the battery in my 2012
Marty,Replaced the fuel filter and the battery in my 2012 cl 550 and my car was parked about 2 weeks. It runs fine but this message comes up on the instrument panel. The car shifts into P N or D and m… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
I have a 2002 240c. 100,000 miles. I had been driving hour
I have a 2002 240c. 100,000 miles. I had been driving for an hour stopped briefly at atm. When I pulled out onto road the car made a loud clunking noise on driver side front tire area and I lost power… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I just bought a 2007 Mercedes GL450 (I love it by the way
I just bought a 2007 Mercedes GL450 (I love it by the way 90k mikes very clean, tight transmission, seems to have been very well taken care of...I test drove a long way and had a local Mercedes mechan… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
I am looking to buy a Mercedes SLwith 45000 Miles.The car
Hi there, I am looking to buy a Mercedes SL(###) ###-####with 45000 Miles.The car looks great and have records that was serviced by Mercedes dealer.I took it for a drive test yesterday and i felt that… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Sl500: i own a 1998 mercedes sl 500 and i lost my phone under
i own a 1998 mercedes sl 500 and i lost my phone under the mechanical seats. is there a way to pull up the bottom cushions to get to under the seats.… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
500sl: I have a 92 mercedes 500 sl, which will no longer start.
I have a 92 mercedes 500 sl, which will no longer start. The ignition is cranking but doesn't start.… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
500 SL: 4/2011 I had my 2005 SL 500 repaired: ABC pump replaced.
4/2011 I had my 2005 SL 500 repaired: ABC pump replaced. Was covered under warranty. Today just over 1 1/2 years later my warning light reads: ABC Drive Carefully. The place I took it is a dealer and … read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
Mercedes-Benz SEDAN: I have a MERCEDES 190-E, 1993. Yesterday
I have a MERCEDES 190-E, 1993. Yesterday I parked and could not engage the reverse gear. PLEASE ADVISE.… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
mercedes: MY W reg..FIRST GEAR ONLY..TRIED TAPPING THE SIDE..NEUTRAL
MY W REG MERCEDES CLK WILL DRIVE IN FIRST GEAR ONLY AND DOES NOT AUTOMATICALL MOVE UP THROUGH THE GEARS, I HAVE TRIED TAPPING THE SIDE OF GEAR SELECTOR BUT DOES NOT HELP . IN ORDER TO SELECT REVERSE I… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
2005 Mercedes C240: Pulling..rpm..restarted..with 96k on odometer
Pulling out of parking lot on to street put foot on gas to accelerate, rpm's shot up car didn't accelerate then sort of hesitated, then kicked in and car responded to acceleration. Pulled over in park… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
500 sl 1992r129 .ASR Alerts without reason, restarting the car..ASR
Hi regarding 500 sl 1992r129 .ASR Alerts without reason, restarting the car and it goes out. ASR works. What couldt it be ? //Calle… read more
EuroDoc
EuroDoc
Owner
Bachelor's Degree
1 satisfied customers
320 mercedes benz: i have a 1996 e..car works..parked..reverse
i have a 1996 e 320 mercedes benz my car works fine and today when i parked it and try to go on reverse..my car would not go on reverse..… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
1992 Mercedes 300: SL..convertible..town, it would lose power..stall
We have a used 1992 Mercedes 300 SL convertible. I started noticing that, just driving around town, it would lose power to the point that I would pull over, thinking it was going to stall. It had a fu… read more
mike a mechanic
mike a mechanic
Auto Mechanic
Vocational, Technical or Trade Scho
89 satisfied customers
2002 Mercedes: SL..gearshift locks up in the park position..If I bang
I have a 2002 Mercedes SL 500. The gearshift locks up in the park position when I turn the key off and back on. If I bang on it and pull hard I can move it to the drive position what do I need to do? … read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
1992 500 SL..reverse..Trans fluid was changed as were filters.
1992 500 SL -722.3 transmission has a clincking noise in reverse. it is worse when cold. Trans fluid was changed as were filters. Mechanic says "clutch flaking" found in trans pan -likely due to fault… read more
Marty
Marty
Mercedes Technician
Associate Degree
55,291 satisfied customers
Mercedes: SL..oil change..hard to accelerate..brakes
A new shop just "tuned up" and replaced all fluids in our Mercedes 500 SL including an oil change. Upon leaving the shop the car performed like it was in a very low gear. It was hard to accelerate and… read more
MBTim
MBTim
Master Technician
Vocational, Technical or Trade Scho
70 satisfied customers
81 mercedes: 380 SL dropped into a lower gear about twice..reverse
My 81 mercedes 380 SL dropped into a lower gear about twice then no forward drive at all but still have reverse ?… read more
joesshop
joesshop
Vocational, Technical or Trade Scho
204 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