Clicking Noise From Behind Center of Dash on Mercedes-Benz CLK500

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: 81,585 (700–135,000)
4 model years affected: 2003, 2004, 2005, 2006
31 people reported this problem
13 people shared problem details
Under the driver side a damper flaper snper 5x after every start up. After removeing the under dash cover I could see everything. It looks as if a motor or a arm is not moveing the way it should. This is not fixed,can anyone help.
clicking behind the dash on start up, clicks 5 times, then repeats for a minute or two before it stops completely. this happens every time I start the car.
same problem i have 2004 clk 500 and the noise behind the dash continues even with car completely shut off and my a/c blows cold but doesnt blow like it should like as if it was blocked.???
Intermittent Clicking Noise Coming from behind center of dash when starting engine or as Key is pulled out of ignition.
I have the same problem with my 2004 Mercedes CLK500. Noise coming from behind the center console.
Clicking noise that seems to be coming from the center of the dashboard, upon start up. After a few minutes the noise disappears. My Service Advisor mentioned that it is coming from the AC/Heater system, flapper. In time, the noise has disapated There has been no effect on the performance of the system. At 115,000 miles, I'm getting another noise that also sounds like rapping from the front dashboard. You get to live with it.
Clicking noise behind dashboard after starting the engine, it eventually goes away after the car warms up less between 1-3 miles of driving.
Clicking noise can be heard most clearly behind the dash when music is not on. Not repaired as of yet.
I was advised not to try to pull the dash apart to fix this, after a few months it went away, or sometimes still heard but very quietly and short lived.
I haven't had this problem repaired yet.
loud squeaking noise when starting the car cold
loud clicking noise for about 3 minutes on car start up and the passenger side is usually what it affects.
Upon starting my ignition, I hear a clicking sound from the middle of the dash board
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