BMW

BMW Questions? Ask a BMW Repair Expert for Answers.

Ask an Expert,
Get an Answer ASAP!

BMW

My service engine yellow light came on yesterday. my manual

Customer Question
my service engine yellow light...
my service engine yellow light came on yesterday. my manual says it means the exhaust system has deteriorated. someone said maybe you just need it serviced. it is a convertible, manual, 2007 mini cooper. Could this be a major thing?
I just had brakes and a rotor done, so worried about cost.
Submitted: 1 year ago.Category: BMW
Show More
Show Less
Ask Your Own BMW Question
Answered in 1 minute by:
9/28/2016
BMW Mechanic: Ron Z., - Auto Tech - replied 1 year ago
Ron Z.
Ron Z., - Auto Tech -
Category: BMW
Satisfied Customers: 19,135
Experience: 18+yrs. experience diagnostics & repair of all makes/models.
Verified

Hi! Welcome to JustAnswer. I'm Ron Z and I'll be helping you with your question today.

When the Service Engine light comes on, this is the on-board computer's way of telling you it sees a problem in one of the monitored systems. Unfortunately, there are literally 100's of parts and sensors monitored in various systems, and to take a "guess" as to which part/sensor in which system is faulty, is virtually impossible. However, if you are not experiencing any drivability issues such as skipping, stalling, shifting problems, etc, then more than likely, the problem is going to lie in the EVAP (emissions control/recovery) system. Very commonly, this could be a faulty, loose or missing fuel cap or even putting fuel in while the vehicle is running can set the light. Check the underside of the fuel cap for any cracks or signs of defects that may keep the cap from sealing correctly. If there are any doubts about the inspection of the cap, replace it. Keep in mind, you will need a cap that meets OE Specs. Those "universal" or "locking" fuel caps sold at after market parts stores do not meet OE specs, and will not seal the system correctly. Check the top of the fuel filler neck for any signs of damage or debris. Check under the vehicle, around the rear areas of the vehicle, looking for any vacuum lines that have dry-rot cracks, holes or loose/missing connections. If these all check out, then the best thing to do at this point is to have the Diagnostic Trouble Codes (aka "p-codes") read from the on-board computer. These p-codes are what is used as a "starting point" for the diagnosis and will tell which part/sensor, in which system, has the fault. There isn't a Mechanic on the planet that can tell you what is wrong with the vehicle just by "looking" at the Engine Light. Every single Mechanic's first course of action WILL be to obtain the p-codes. It's standard diagnostic procedure. Once you get these p-codes you can more accurately and efficiently diagnose the problem and then make the correct repair. You can have these p-codes read FREE (except in California) at any local "big chain" part store (ie. AutoZone, PepBoys, Advanced, etc). Please remember to leave a rating using the 'stars' or click 'Accept'. A 5-star rating is much appreciated! Rating or accepting my answer does not cost you extra.

Ask Your Own BMW Question
BMW Mechanic: Ron Z., - Auto Tech - replied 1 year ago

Hi Melody! I noticed this thread was still open, so I wanted to check in and see if there was anything else I could do for you on this issue? Any other questions you had? Was there something you wanted addressed that I may have missed in my answer? Did you find my answer helpful?

Ask Your Own BMW Question
BMW Mechanic: Ron Z., - Auto Tech - replied 1 year ago

..

Ask Your Own BMW Question
BMW Mechanic: Ron Z., - Auto Tech - replied 1 year ago

..

Ask Your Own BMW Question
Ask Ron Z. Your Own Question
Ron Z.
Ron Z.
Ron Z., - Auto Tech -
Category: BMW
Satisfied Customers: 19,135
19,135 Satisfied Customers
Experience: 18+yrs. experience diagnostics & repair of all makes/models.

Ron Z. 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:

Roger

Roger

BMW Master Tech

3,050 satisfied customers

10 yrs. experience as BMW Master Technician, shop foreman and dealer.

Marty

Marty

ASE Certified Technician

494 satisfied customers

ASE & Bosch Certified Master Tech. Over 30 years experience.

bimmaster

bimmaster

BMW Technician

1,838 satisfied customers

3 years dealer experience, master bmw tech

Sam

Sam

BMW Master technician

1,043 satisfied customers

BMW S.T.E.P. graduate, 10 years BMW dealership experience

Thebmwbum

Thebmwbum

BMW Foreman

714 satisfied customers

31 years BMW Experience

mike

mike

BMW Technician

694 satisfied customers

bmw master tech ase certified

Matt

Matt

Engineer

413 satisfied customers

Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing

< Previous | Next >

Related BMW Questions
I have a parking brake problem. Parking brake light came on.
I have a parking brake problem. Parking brake light came on. I replaced gear as shown on YouTube but it still dose not work.… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Changed out the brake master cylinder and bled the system.
changed out the brake master cylinder and bled the system. Brakes work fine now but the car started idleing very rough. So much so that 1st thing in the morning the car will shut off if not forced to … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Brake light stays on. Have know idea. Brakes work properly.
Brakes work properly. Bulbs changed. Switch changed under brake pedal. … read more
Todd M
Todd M
Owner
ASE Certification
1,274 satisfied customers
I am having issues with brakes on mye39. 105k replaced
I am having issues with brakes on my(###) ###-####e39 … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
2001 bmw 525i yellow brake light on and abs light dtc code
2001 bmw 525i yellow brake light on and abs light dtc code 117 and rear brake stay on i replace brake light switch and it did not fix problem … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
3,996 satisfied customers
2006 Bmw 330xi Brakes on the front of the vehicle wear out
2006 Bmw 330xi Brakes on the front of the vehicle wear out exceedingly fast. Potential cause? Also the display is out on the factory radio do you know a source where I can get a good used radio for th… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
3,996 satisfied customers
1999 BMW323i brake lights stay on when key is turned on. The
1999 BMW323i brake lights stay on when key is turned on. … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
I have a 2007 328i BMW. Recently the ABS and brake lights
I have a 2007 328i BMW. Recently the ABS and brake lights came on. I took the car into my regular mechanic who advised me that the ABS module is bad and needs to be replaced. Because this is a costly … read more
Matt
Matt
Engineer
Bachelor's Degree
413 satisfied customers
I need brake fluid and not sure where it goes, It shows that
It shows that it is low and I am not sure the last time it was changes changed … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
3,901 satisfied customers
I have a 2008 X-5 3.0 that has parking brake malfunction
I have a 2008 X-5 3.0 that has parking brake malfunction error light … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Parking brakes is stuck and I cant move the car. No Codes,
No Codes, just the yellow parking symble. brake light work … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Drove to work this morning and the brake light came on with
Drove to work this morning and the brake light came on with a little car on a lift. … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
0 satisfied customers
My check brake fluid light is on, but ther is no loss of
my check brake fluid light is on, but ther is no loss of fluid and no brake issues … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
No Brake Light or Cruise control, fuse good, replaced brake
No Brake Light or Cruise control, fuse good, replaced brake light switch. still not working … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Both brake lights do not work. Third brake light work.
Both brake lights do not work. Third brake light work. Replaced bulbs … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
2007 BMW X3 3.0si yellow Brake, 4x4, and Service Engine Soon
2007 BMW X3 3.0si yellow Brake, 4x4, and Service Engine Soon lights on. Car will start. It has a difficult time doing so. Long cranks. Please advise.… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Brake pedal seems soft. Car still brakes, no pull to one
Brake pedal seems soft. Car still brakes, no pull to one side, but doesn't seem right. What do I do? … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
The parking brake won't release. Brake fluid is good, but
Brake fluid is good, but brakes need to be replaced … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 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