Speedometer not working

[Jerry Scholder]

Speedometer not working: History--Initially odometer and speedometer not working. Checked rear wheel (drvr side) speed sensor and replaced. Nothing. Sent ABS Mod in for repair. Speedometer worked, no odometer. Sent instrument cluster in for pixel repair. Odometer works now but not speedometer. Did instrument gauge test and checked out O.K. Pixels like new. Could something have happened during instrument cluster repair that would disable the speedometer? 2001 740i with 190,000 miles.

[Mayorchuck]

I started your own thread on this issue. What brand did you replace the wheel speed sensor with? Aftermarkets (non Siemens) rarely work properly.

[Jerry Scholder]

I have to confess, the brand of the speed sensor was an after market; but the speedometer did work when the speed sensor was installed and until the instrument cluster was sent out to repair the pixels. I can, and will take the speed sensor off my 2001 740i "M", 176,000 miles and switch to the problem vehicle to see if that will make a difference. I'll follow up. Amazing response time; thanks for your thoughts.

[oldroller]

You can access the speed reference while driving in cluster test mode 8, the readout will be in Kmph. If the data is present, then likely an internal fault/connection in
the cluster.