How JustAnswer Works:

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

Ask Steve Your Own Question

Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 19826
Experience:  BMW Expert
26942375
Type Your BMW Question Here...
Steve is online now
A new question is answered every 9 seconds

I have 3 issues on my 2006 BMW 750 Li (e66) with 100 000 Km

Resolved Question:

I have 3 issues on my 2006 BMW 750 Li (e66) with 100 000 Km (60 000 mi) on it:

1. SMALL COOLANT LEAK
About every 2 months, I have a "low coolant" warning, usually when I start in the morning. Usually, about there is about 1/8 or 1/10 gallon missing. I haven't noticed any leaks, not on my driveway, at least. Where should I check for coolant leaks? I haven't noticed any white smoke coming from the exhaust.

2. ROUGH IDLE ON STARTUP
I am not sure if this could be related to the previous problem, but it sometimes idles quite roughly when starting (in the morning only). On the worst morning, it feels like there is some misfire. This morning, it did it and I listened to the tailpipe and did hear what seems to be misfire, but just for a few minutes. On 2 occasions, I had to turn off the engine, the start it again and it went away...

3. DOOR HANDLE PROBLEM ???
This one started when, for absolutely no reason, whenever I started the car, all the windows came down and the sliding roof opened. They wouldn't close for a few minutes (using door switch). When I did get them closed, they would all open again when I pushed the start button to turn off the engine. Again, I had to wait 2 to 10 minutes to finally get them to stay closed with the engine off. ABOUT THE SAME TIME, MY DRIVER DOOR WOULDN'T SHUT (just bounce), but the mechanical latch seemed OK, I could close it with a pen with the door open. It seems like the car did not know the door was closed and wouldn't close the latch. Since then, when I leave the car for more than about 1 hour, the keyless entry stops working (I use the remote) and the radio needs to reload all the CD's from the CD changer (I can hear it) and forgets which one it was playing. I THOUGHT THAT MAYBE THERE IS A PROBLEM WITH THE DOOR SWITCH THAT LOWERS THE WINDOWS OR THE DOOR HANDLE ITSELF AND THE CAR SHUTS DOWN POWER BECAUSE IT CREATES A POWER LEAK ????

OK, that's it, all my problems!

Thanks!

Martin
Submitted: 4 years ago.
Category: BMW
Expert:  Steve replied 4 years ago.
Hi Martin, welcome to justanswer. The coolant leak will need to be ferretted out using a pressure test, small leaks are difficult to find, especially when no coolant is visible on the ground. The rough idle sounds like a problem with a temp sensor or perhaps a vacuum leak. For the door and windows acting up, you will need to have the car scanned to determine exactly what has failed. There are a number of modules on this car that can fail. The one thing you can try though is a battery reset. With the car off, keys out, windows down and doors unlocked and trunk open, unhook the battery for 1 hour. This can sometimes clear out random electrical/computer faults, and is a bit like rebooting a frozen computer. Please let me know if you have further questions. If satisfied with my assistance, please press accept so that I am compensated for my time, effort and expertise. I am not compensated until you press accept. None of the deposit you have paid will be transferred until you press accept.

Cheers.

Steve
Customer: replied 4 years ago.
Hi Steve, I read horor stories regarding a coolant leak from a tube, located between the cylinder banks if I recall correctly, the often fails and I was wondering if it's on the 4.4l engine only or also a possibility on mine (4.8l). The reason I am asking is because my warranty will end in 15 000 Km (about 3-4 months for me)... ROUGH IDLE: Would my mechanic get a fault code if it's a temp sensor? Can I get it using the car's computer with the trip reset button ? DOOR HANDLE/ELECTRICAL PROBLEM: Thanks, XXXXX XXXXX try exactly what you said right away. I will disconect the negative cable from the battery in the trunk. OF COURSE, I WILL ACCEPT ANSWER. I will also adjust the amount if it seems unreasonable! Thanks.
Expert:  Steve replied 4 years ago.
Can I please have the last 7 digits of your vin to look a little further into this?
Customer: replied 4 years ago.
VIN: DT38740 (just noticed that door assist stops helping me close the door too after about 1 hour)...
Expert:  Steve replied 4 years ago.

thanks please give me a few min

 

Customer: replied 4 years ago.
ok
Expert:  Steve replied 4 years ago.

The coolant leak does not appear to affect your engine. If you are under warranty, this should be covered so long as the cause is is not road damage.

 

A temp sensor would not necessarily set a fault. They will only set a fault if the value reported is unplausible, so they can report an incorrect value, and as long as it is reasonable, it won't set a fault code.

 

Good luck with the battery reset. Be sure you have the keys out of the ignition, doors unlocked, windows down, trunk open so that you don't get locked out.

 

Please let me know if you need anything further. Please press ACCEPT if satisfied.

 

Cheers,

 

Steve

Customer: replied 4 years ago.
Hi Steve,
I just did what you told me (disconnect battery for 1 hour), everything is back to normal. I will see if the problem went away in a few hours when I go back to the car.

Two last question: Are small coolant leaks like the one I have current ? I am going on vacation with the car next week, I will do about 6000 km (4000 mi). If you were me, would you get this done before I leave or it's probably fine to do it when I get back ?

I'm clicking Accept answer after that.

Thanks,

Martin
Expert:  Steve replied 4 years ago.
Hi again. It does sound like you do have a small coolant leak, and it may only leak when the car is in operation, this is why I suggested the pressure test to find it. If it were my car. I would have the leak fixed before going on the trip. It simply isn't worth the risk. Please let me know if you require anything further. Please press accept if satisfied. Cheers. Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 19826
Experience: BMW Expert
Steve and 5 other BMW Specialists are ready to help you

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 P Elm City, NC
< Last | Next >
  • 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 P Elm 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. Phil Marysville, 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. Charles Walnut 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!
    Sue Charleston, 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. Jim Castleberry, 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
 
 
 

Meet The Experts:

 
 
 
  • Roger

    BMW Master Tech

    Satisfied Customers:

    2906
    10 yrs. experience as BMW Master Technician, shop foreman and dealer.
< Last | Next >
  • http://ww2.justanswer.com/uploads/Guest/2008-02-15_191551_avatar.jpg Roger's Avatar

    Roger

    BMW Master Tech

    Satisfied Customers:

    2906
    10 yrs. experience as BMW Master Technician, shop foreman and dealer.
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    ASE Certified Technician

    Satisfied Customers:

    406
    ASE & Bosch Certified Master Tech. Over 30 years experience.
  • http://ww2.justanswer.com/uploads/DA/dansciol/2012-7-7_16177_danpic.64x64.jpeg bimmaster's Avatar

    bimmaster

    BMW Technician

    Satisfied Customers:

    1817
    3 years dealer experience, master bmw tech
  • http://ww2.justanswer.com/uploads/bmwmaster/2009-05-09_062111_avitar.jpg Sam's Avatar

    Sam

    BMW Master technician

    Satisfied Customers:

    1043
    BMW S.T.E.P. graduate, 10 years BMW dealership experience
  • http://ww2.justanswer.com/uploads/hondatrx450/2010-01-18_231606_stuff_092.JPG mike's Avatar

    mike

    BMW Technician

    Satisfied Customers:

    694
    bmw master tech ase certified
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    BMW Technician

    Satisfied Customers:

    628
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/bmwbum01/2009-12-28_205712_germany2000.jpg Thebmwbum's Avatar

    Thebmwbum

    BMW Foreman

    Satisfied Customers:

    533
    31 years BMW Experience