Speedometer fluctuating while driving?

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

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

-Regards,

N.D.
Jun 27, 2024 at 8:55 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
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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Jun 28, 2024 at 10:26 AM
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