Question about 2007 BMW 335i Coupe

3 Answers

Speedometer errors with 335i. Speedometer reads 70 mph but I am doing 65 mph.

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  • dub67xmlc Feb 01, 2010

    Yes, I have read the many different forums, but did not find a way of fixing this unless I had the iDrive, which I don't.

    How can I recalibrate this? This is too much of an error.


  • dub67xmlc Feb 02, 2010

    My first call was to my dealer on Monday. So far been less than successful. "All German cars do this". The service manger is supposed to get back with me but offered no solution. I told her that the error was not acceptable. I have only had the car for 31 days.

    If you have a specific area of the software or correct code that I can use as leverage, I would appreciate that.

    Thank you for your help.

  • dub67xmlc Feb 02, 2010

    This is the detail I was looking for. Thank you !

  • dub67xmlc Feb 02, 2010

    I understood that. Thanks again.



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This speedo can be calibrated, but 1st it has to be verified that the error is 5 MPH, this is done with a scanner reading the Vehicle Speed Sensor data stream while the tech drives the car, the scanner reading should match the displayed speed on the speedometer, if it does't then the driven gear in the trans must be changed, one tooth bigger to slow the speedo reading down, if the error is 5 MPH it is excessive, the industry standard is max of +or- 3 MPH variance from true speed, in any event you will need the dealer to verify the exact error u think u have.

Posted on Feb 02, 2010

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  • yadayada
    yadayada Feb 02, 2010

    there is no specific software code, the speedometer will be pulled and sent out for prices calibration, but remember the dealer has to confirm this error before they will do anything at all, in my 30 years as a dealer technician i have had this complaint of speedometer error written on many repair orders, and very seldom did careful testing prove the complaint valid, this may not be the case here with u and I am not inferring you don't have a valid claim, but testing must be done to prove it, they will not fix it based on your word alone, the manufacturer requires careful testing to confirm the problem really exists ot hey will not pay the warranty claim for the repair.

  • yadayada
    yadayada Feb 02, 2010

    should read "speedometer will be pulled and sent out for precise calibration"

  • yadayada
    yadayada Feb 02, 2010

    not "prices"


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This is considered an emission related code that is automatically covered under the BMW's warrenty and all manufacturers warranties

This is a law that protects the consumer and the environment for a minimum of 4 years from the new vehicle production date.

Your best bet is taking the car to the dealer.

Posted on Feb 02, 2010

  • Susan Price Feb 02, 2010

    There is no way to recalibrate without the diagnostic scanner and the software to install.

    This is going to be a dealer issue



All german cars do this, or at least Mercedes, BMW, and Audi
In Germany, there is a law holding the car manufacture responsible if the speedometer shows a speed slower than the actual rate of travel. Thus, they all slightly overstate the speed to protect themselves. When you are going 65 MPH on a 65 MPH highway, you can be 100% certain you are going 65 MPH or a touch below. Click on the link to view a forum on this subject

Posted on Feb 01, 2010

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