Mercedes

Have Mercedes Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Mercedes

My check engine light goes away after clearing but when

Customer Question
My check engine light...

My check engine light goes away after clearing but when upturn off the ignition and back on it comes back

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

Stays on

Mechanic's Assistant: What is the model/year of your Mercedes?

2007 c230

Mechanic's Assistant: Are you fixing your C230 yourself? What have you tried so far?

Muffin really. Just the scan machine and cleared it

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

Just that for now n my sis as well sis sorry

Submitted: 6 months ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 5 minutes by:
7/30/2017
Mercedes Mechanic: rpmdiag, Tech and Instructor replied 6 months ago
rpmdiag
rpmdiag, Tech and Instructor
Category: Mercedes
Satisfied Customers: 8,488
Experience: Since 1975
Verified

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

Ask Your Own Mercedes Question
Mercedes Mechanic: rpmdiag, Tech and Instructor replied 6 months ago

The light comes on to tell you that something is wrong, clearing it doesn't fix it.

You need to see what the codes are so we can address them so we can fix it.

Most parts stores will read codes for you for free, but a scan tool will help you diagnose the problem with data too.

I’ve been in the auto repair industry since 1975 and have made many improvements over
the years pertaining to proper repairs. I also share this knowledge in the classrooms I
instruct in around the country, teaching for large companies who offer high-end training
to repair shop technicians.
It all starts with listening to the customer’s complaint, confirming it and finally doing all
the needed tests to locate the problem. All these tests require thousands of dollars worth
of specialized equipment that were designed and produced for the professional
technician. So when I recommend something for you to do, though it may seem silly to
you, please trust that I’ve “been there and done that” before. Getting a baseline is critical.
Once this is done, then I confirm what I have found wrong instead of throwing parts at it,
to be sure the problem I see is NOT camouflaged by something else.
Just like when you go to the doctor’s office for a visit, they take all your vital signs such
as; blood pressure, body temperature, weight, pulse etc.
This is my approach as well, except with the cars vital signs instead. I do everything
possible to NOT leave any stones unturned because it can cause you to misdiagnose the
problem or chase your tail.
I see so many people replace everything between the bumpers to no avail and spend
money they could have saved, if they only paid for a good diagnosis.
Sad to say, I even see people offering help to someone else by just telling them what the
parts are they should replace. Ouch!! These cars are all high tech, no room for guesswork.
When the check engine light or any lights illuminate in the instrument cluster, something
is obviously wrong, and there is not a code reader on the planet that will tell you what’s
wrong, they will only give you a code that is related to the part/circuit in question. These
parts stores check codes for free, for what reason? Hmm!

My goal is to assist you in the repair of your vehicle by
supplying you with well educated information. I may not
always have the exact fix you wanted to hear, but my job is
to get you on the right track, which I always do. I can’t hear,
see, smell or touch your vehicle from where I’m at, so your
understanding of that is greatly appreciated. There are no
magical answers, but I do my best to guide you in the right
direction.
Please understand that I don't know your skill level or tools
you have to assist us. Also understand that I can't see, smell,
hear, or touch the vehicle either, so your patience is
appreciated. JA is a great Q/A site, but it does not replace a
repair shop. So please don’t shoot the messenger if I have to
deliver bad news:)

Ask Your Own Mercedes Question
Customer reply replied 6 months ago
My SRS. LIGHT AS WELL
Mercedes Mechanic: rpmdiag, Tech and Instructor replied 6 months ago

Yep, can all be related and most likely is.

If you are satisfied with my answer, I would greatly
appreciate a 5 star rating now before you leave the site and I
will still assist you after you have rated me too if another
question pops up. I don’t get credit for helping you until
you rate me

Ask Your Own Mercedes Question
Mercedes Mechanic: rpmdiag, Tech and Instructor replied 6 months ago

Did you have any more questions for me at this time?

Thanks again, Ron

Ask Your Own Mercedes Question
Mercedes Mechanic: rpmdiag, Tech and Instructor replied 6 months ago

If you are satisfied with my answer, I would greatly
appreciate a 5 star rating now before you leave the site and I
will still assist you after you have rated me too if another
question pops up. I don’t get credit for helping you until
you rate me

Ask Your Own Mercedes Question
Mercedes Mechanic: rpmdiag, Tech and Instructor replied 6 months ago

If you are satisfied with my answer, I would greatly
appreciate a 5 star rating now before you leave the site and I
will still assist you after you have rated me too if another
question pops up. I don’t get credit for helping you until
you rate me

Ask Your Own Mercedes Question
Mercedes Mechanic: rpmdiag, Tech and Instructor replied 6 months ago

Thanks again and please remember to rate me 5 stars now
and keep this link in case you need me again later on.
I don’t get credit for assisting you until you rate me
My goal is to assist you in the repair of your vehicle by
supplying you with well educated information. I may not
always have the exact fix you wanted to hear, but my job is
to get you on the right track, which I always do. I can’t hear,
see, smell or touch your vehicle from where I’m at, so your
understanding of that is greatly appreciated. There are no
magical answers, but I do my best to guide you in the right
direction.

Ask Your Own Mercedes Question
Was this answer helpful?
Ask rpmdiag Your Own Question
rpmdiag
rpmdiag
rpmdiag, Tech and Instructor
Category: Mercedes
Satisfied Customers: 8,488
8,488 Satisfied Customers
Experience: Since 1975

rpmdiag 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

29,009 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

3,771 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

602 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
I have a 2004 CLK320 Convertible. I drove over a speed bump
I have a 2004 CLK320 Convertible. I drove over a speed bump too fast and my rear headrest went all the way up. How do I get them down. The button on the dash panel won't make them drop when pressed. … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
1996 mercedes benz c220 coolant light came on the other day
hi 1996 mercedes benz c220 coolant light came on the other day it was low added coolant to the resovior and found there is oil in the coolant ionly in the resivor and only abot 25%of the resivor is oi… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
2010 sprinter 2500 no crank several falt coads having to do
2010 sprinter 2500 no crank several falt coads having to do with no CAN messages from ECU. Reading low voltage at relay for ECU (10v) relay buzzes, pulling in and out quickly. Alternator was just repl… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I have 7500 miles on my 17 E300 4 matic 1 has a side bubble.
Hi I have 7500 miles on my 17 E300 4 matic 1 has a side bubble … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Exshaust smell when moonroof is open. 230,000. 1993 300se.
exshaust smell when moonroof is open JA: How many miles are on the car? How has your mileage been lately? Customer: 230,000 JA: What is the model/year of your Mercedes? Customer: 1993 300se JA: Are yo… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
I have a 2006 E350 Sedan 4-Matic. I'm looking for New Head
I have a 2006 E350 Sedan 4-Matic. I'm looking for New Head lights for the Car. The present Plastic cover is to old and I don't have enough light? … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
My central locking has stopped working on my sprinter camper
My central locking has stopped working on my sprinter camper van. Neither key will unlock it electronically. … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
I have a 2003 CLK430. The top worked fine until the day it
I have a 2003 CLK430. The top worked fine until the day it stopped working. I checked the trunk and the partition was down. I put it up and made sure the switch looked OK. The top started acting flaky… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
2016 sprinter codes R12/1 R12/2. R12/1 and R12/2. Had seat
Had seat belts lock after hit post and have replaced them… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
Mercedes 2000 clk 320 was not running for 5 weeks, put in
mercedes 2000 clk 320 was not running for 5 weeks, put in new battery, ignition key will not turn. changed battries in key. … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
I want to replace the rear bumper step pad on my 2013 ml 350
i want to replace the rear bumper step pad on my 2013 ml 350 … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
My blower motor fan seems to have a mind of its own. The
my blower motor fan seems to have a mind of its own. The level speed indicator says high and sometimes it comes out high but then go to low or medium so it never corresponds to the level you want … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
2006 Dodge/Mercedes Sprinter 3500; I5 2.7L turbo diesel What
2006 Dodge/Mercedes Sprinter 3500; I5 2.7L turbo dieselWhat is the R&R procedure for the A/C compressor?One place tells me to just remove the belt, the A/C hoses/lines, and three attaching bolts that … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
My car (2011 E 350 convertible, car of my life) is behaving
Hi ! My car (2011 E 350 convertible , car of my life) is behaving strangely. Do not recognize it's key … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,672 satisfied customers
Is there a low beam fuse on 2004 E320 - Myself - I've tried
Yes myself - I've tried new light bulb - I've tested with ohm meter and bulb is good and connections to bulb are good … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Wanted to get your thoughts on my 2009 GL 550 lift gate will
Hi Michael, Wanted to get your thoughts on my 2009 GL 550 lift gate will not latch. It goes up-and-down but will not securely latch like it should. After a couple weeks of this, I received a battery a… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,771 satisfied customers
Won't crank or start cooling fan comes on high speed now a
Won't crank or start cooling fan comes on high speed now a key does not work … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Dropped one key put it back together tried to start but. got
Dropped one key put it back together tried to start but. got error message ,left in switch, and ate a hamburger still did not work ,tried good key now it won't work 01 01ml 320 … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 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