Clicking Noise From Behind Center of Dash on Mercedes-Benz CLK55 AMG

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.

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Average mileage: 99,333 (90,000–117,000)
3 model years affected: 2003, 2005, 2006
5 people reported this problem
2 people shared problem details
At start up thumping sound coming from middle area of dashboard (cupholder area) for about a minute
same issue as described above, I'm getting clicking noises from two areas. The front center dash and the driveside dash. I'm also not getting air on the driverside defrost
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