1983 Mercedes Benz 300sd 6 cyl Two Wheel Drive Automatic 135000 miles
1983 MB 300SD, when you turn the heater controls on, by depressing any of the buttons on the control module, you hear a " hum" low sounding hum but nothing happens with heat. The blower motor works, I jumped it from the battery and it spins just fine. Anyone with any ideas about what the problem my be, I would be every so grateful. Many thanks.
Saturday, October 23rd, 2010 AT 5:07 PM