Mercedes-Benz 420SEL Problem Report
Mercedes-Benz 420SEL Bad Switch/Blower Motor Resistor Assembly May Cause Inoperative Heater Blower Motor
Other than a defective motor, a bad switch or blower motor resistor assembly can cause an inoperative heater blower motor.
when I place in key and start to turn car on blower will come on sometime when I start the car blower goes off most of the time the blower does not come on at all. - Visitor
the blower motor was rewplaced 2 years ago and it quit working but i hear noise when i push buttons on air condition compressor is fine no air comes out of the vents - joesalem8
you can hear it turn on but no heat or a/c come out of my vents - Visitor
I probably need to replace the defroster and htr/ac blower as it desn't work on any switch sett...
but was told i could cause more issues by jumping or trying to charge the batt
Example: If I am going 25 MPH (as shown on speedometer) my actual speed is approximately 45 M...
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/...