The weird part is getting no codes. Usually if speed stays zero it's because defective sensor or wiring. (and often that wiring is inside the module; bad bond wires).
Their is a reliable knock off on Amazon (sort by review); I would get a sensor or two and see if the sensor is at fault.
Speedo uses left rear sensor. I would start there.
__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)
|