MB S600 1992 I have a MB S600 W140 from 1992, where the speedometer does not work and the ASR/ABS is on, who can help me with information?

[Dumitrup]

I have a MB S600 W140 from 1992, where the speedometer does not work and the ASR/ABS is on, who can help me with information?

 

[Otrebla49]

Hi, I am new to this forum too. One thing I read a few days ago on a German website "motor-talk.de" about a similar/same issue, pointing at the fuses should be checked, the ones located in the "module-box" (engine compartment, rear-right area). Apparently there are 2-3 external fuses, which supply power to MAS-ECU, and for ABS/ASR too, being at sight when removing the cover of module-box there. Symptoms with speedometer not operating and ABS/ASR control lights on fit to blown or corroded fuses. Hope this helps!

 

[TerryA]

@Dumitrup,
Don’t just look at the fuses. They may look OK. Sometimes when a fuse is removed they fall apart. You should take them all out and check them for cracks and also clean the connections. Use only brass fuses. Replace aluminum fuses.

 

[kubasz]

Hi. Your front left wheel speed sensor is most likely at fault. Usually its just the wiring that fails but its not that simple to repair if keeping the original look is your priority.