Speedometer fluctuating while driving?

Tiny
NDESAI21
  • MEMBER
  • 2006 BMW X3
  • 3.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 115,000 MILES
Hello,

As I am driving the Speedometer Keeps Fluctuating. What could be the reason?

-Regards,

N.D.
Thursday, June 27th, 2024 AT 8:55 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 46,719 POSTS
There is no VSS sensor on this car, the speedometer gets its data from the ABS system which processes each of the ABS wheel speed sensors so if one of them is not working (left rear) it will affect the speedometer operation. Please see the ABS system wiring diagrams so you can see what I am talking about. You also can rerun the odes to confirm which sensor is having the issue.

You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Check out the images (below). Please let us know what happens.
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Friday, June 28th, 2024 AT 10:26 AM

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