Mercedes-Benz E320 Problem Report

Mercedes-Benz E320 Erratic HVAC Blower Motor Operation

(26 reports)

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.

No forced air on heat or AC. Replaced Electric motor and blower regulator -
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. -
Replaced sensor. -
Blower ramps up and down in speed. -
blower stop working and i replaced the motor and had the same problem i hope its the regulater -
I turn off the car and the air conditioning fan keeps running even if I remove the key. -
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. -
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 -
replaced last year! -
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