Clicking Noise From Behind Center of Dash on Mercedes-Benz C230

Problem Description and Possible Solution

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.

Problem Data
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Average mileage: 92,272 (40,000–157,000)
6 model years affected: 2002, 2003, 2004, 2005, more2006, 2007
25 people reported this problem
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Viewing 1 - 8 of 8 comments
Clicks repeatedly when first started, last about 3 min every time.
clicking noise in the dash for at least 2min
Clicking noise from under center of dash
Clicking noise from behind dash
CLickin noise from dash for about 8 repatative clicks the it guits. AC diverter control does not work.
The clikcing is more like the sound of the keys but I know it is coming from the dashboard area.
clicking in dash
Stepper motor making noise. Because the front panel has to be removed to fix it, repairs are costly.