BMW E38 7-Series and E39 5-Series Inoperative Speedometer and ABS Warning Light – 740i, 740iL, 750iL, 528i, 525i, 530i, 540i, M5
car year: 1998
car model: 750iL
I have a speed sensor warning light on. The speedometer does not work and the abs light is on. I just replaced the right rear abs speed sensor and it does not seem to have fixed the problem. Any other ideas? Do I replace the left also?
The speedometer input is taken from the left-rear ABS speed sensor, on the E38 7-series chassis (740i, 740il, 750iL 95-01). The similar vintage E39 5-series uses the right-rear ABS sensor for speedometer input. You can either install the old right-rear sensor into the left-rear position (to see if the speedo works and the ABS fault extinguishes) or purchase a new sensor to install at the left-rear position.