Malfunctioning Regulators May Cause Blower Motor Failure: Mercedes-Benz E420 Heating & Air Conditioning

Problem overview

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.

7 people reported this problem

2 comments

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Mercedes-Benz E420 vehicles with this problem

1 model year affected

1997 Mercedes-Benz E420

Average mileage: 154,000 miles

(99,000 - 245,000)

Repairs related to this problem

Blower Motor Replacement

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Malfunctioning Regulators May Cause Blower Motor Failure on Mercedes-Benz E420

Problem overview

Mercedes-Benz E420 vehicles with this problem

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