Car Problem Reports

Mercedes-Benz C320 Broken Stepper Motor Actuating Arm May Cause Clicking Noise From Behind Dash

Mercedes-Benz C320 Problem
95 Reports
Me Too

Model Years Affected: 2001, 2002, 2003, 2004, 2005

Average Mileage: 104,168 mi (27,503 mi - 205,000 mi)


A repetitive clicking noise from behind the center area of the dash panel is usually caused by a broken stepper motor actuating arm. The actuating arm controls the direction of air flow in the climate control system. Disassembly of the center console will be required to access and change the broken arm with the updated, reinforced part.

  • Visitor, , 123,000 mi

    clicking when you start car. then stops after 3-4 min. sound comes from top of dash board

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  • Visitor, , 69,500 mi

    Every time the car starts I hear a clicking coming from behind the dashboard. It clicks for about 1 minute and then stops. I don't hear it again until the car is started again. If I start the car and then turn it off the clicking continues for about a minute and then stops.

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  • Visitor, , 100,000 mi

    Clicking noise for about three minutes before stopping. Every time you start the car.

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  • Visitor, , 78,000 mi

    Clicking noise behind dash board.

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  •  Rookie

    Clicking repeating noise coming from inside the dashboard. Not all the time but I have heard this quite enough...

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  • Visitor, , 95,000 mi

    Once I start the car, I hear a clicking noise from the behind the dash. When it started it was only about 45 seconds, now it is going on for about 1 1/2 minutes to 3 minutes. Now I hear at least two motors clicking. It affects the AC and the Heater function, to the point that the AC will run by itself when turned off, Half my windshield will not defrost (Passenger side) and I believe it has affect the entire AC system.

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  • Visitor, , 103,000 mi


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  • Visitor, , 128,000 mi

    This has happened twice, first time covered by warranty,now doing it again, too expensive to fix.

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  • Visitor, , 117,000 mi

    Gotta take out the dash and replace a few motors and plastic clips. 6-10 hours depending on ability and tools

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  • Visitor, , 65,000 mi

    Clicking noise for about 8 times every time I start the car

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