A common occurrence on Mercedes-Benz models with Diesel engines is the failure of the tachometer.

This problem usually does not lie with the tachometer itself, though. The cause can usually be traced to a failed RPM sensor.

This sensor is located on the bell housing and is used to read a toothed wheel, sending this signal to the tachometer to be displayed as engine RPM.

If the tachometer has stopped working in your Mercedes-Benz, replace your failed RPM sensor today, and keep everything on your car working as well as it did when it was new.