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Mercedes-Benz
E420
7

Erratic HVAC Blower Motor Operation on Mercedes-Benz E420

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 154,000 (99,000–245,000)
1 model year affected: 1997
7 people reported this problem
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