Re: Speedometer/ABS Dead

[Elcrinv@xxxxxxx]

The E39 with ABS + T has four sensors, one on each wheel (duh). Anyway. they 
are inserted into a hole in the top of the hub and attached by an Allen bolt 
through an ear on the sensor. If the assembler isn't careful the portion that 
goes into the hub gets hung up and the ear gets broken when he pushes down and 
uses his air ratchet. A quick tap at the inspection station sets the sensor 
properly and it slowly works its way out over time, resulting in the speedometer 
stopping and the ABS light coming on. Cleaning up the sight and replacing the 
sensor should result in the everything returning to normal eventually. To 
replace the sensor with a new one you have to remove the plastic wheel well 
protector (at least in the rear) and unplug it. Pretty easy to do. Part costs about 
$90, club price.
Fred Callender RMC
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