Erratic HVAC Blower Motor Operation on Mercedes-Benz E320

A malfunctioning HVAC blower motor regulator can cause the blower motor to operate below the requested speed or not at all. Updated regulators are available; the blower motor and cover need to be replaced at the same time to upgrade the system.

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Average mileage: 133,182 (28,000–400,000)
9 model years affected: 1994, 1995, 1996, 1997, more1998, 1999, 2000, 2001, 2002
35 people reported this problem
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Viewing 1 - 14 of 14 problem details
2000 Mercedes-Benz E320 80,000 mi,
The blower motor stays on all the time, even when the key is out of the ignition. I looked on line and it is likely the regulator. I am going to check it, and see if it is blow, but I need to get a voltmeter. I will get one and check.
1999 Mercedes-Benz E320 170,000 mi,
I turn off the car and the air conditioning fan keeps running even if I remove the key.
1999 Mercedes-Benz E320 90,300 mi,
No forced air on heat or AC. Replaced Electric motor and blower regulator
1997 Mercedes-Benz E320 130,000 mi,
Ac does not blow hard enough at max but still blows correct temp.
2000 Mercedes-Benz E320 120,000 mi,
Replaced sensor.
1996 Mercedes-Benz E320 190,000 mi,
blower stop working and i replaced the motor and had the same problem i hope its the regulater
2001 Mercedes-Benz E320 34,000 mi,
Blower ramps up and down in speed.
1999 Mercedes-Benz E320 214,000 mi,
Replace part fan regulator aprox 45.00
1995 Mercedes-Benz E320 186,578 mi,
Installed new blower fan and now getting burnt smell out from vents. Blower motor working fine don't see what's causing this issue. 95 e320 wagon.
1998 Mercedes-Benz E320 124,000 mi,
My heater was making noise and then stoped working
1997 Mercedes-Benz E320 400,000 mi,
Speed of blower does not work
1997 Mercedes-Benz E320 102,900 mi,
I'm still ordering the blower motor and regulator. Hopefully this fixes the problem. I've the voltage going to the blower motor and it seems to be okay.
2002 Mercedes-Benz E320 30,000 mi,
the a/c and heater have been an issue since i purchased the car. when it works its great.....but it is gettting to be less and less