Clicking Noise From Behind Center of Dashon Mercedes-Benz C320 4MATIC

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.

RepairPal Verified
Average mileage : 121,122 (100,000–150,000)
3 Years Affected: 2003, 2004, 2005
9 people reported this problem
3 people shared problem details
Same clicking from broken stepper motor actuating arm
I heard the problem months ago and now have little air flow from the upper part of vent. When AC is on the blower is working at feet level but very little air movement in upper vent.
When I start my car, I hear clicking sounds (8 to 9 clicks)
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