Clicking Noise From Behind Center of Dash on Mercedes-Benz C240

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: 104,757 (27,000–255,783)
5 model years affected: 2001, 2002, 2003, 2004, more2005
77 people reported this problem
38 people shared problem details
recently began - hear the "clicking noise" upon startup for about 60 secs - seems to be from the AC/Heater so I turn it off and on. while the noise is "clicking" air flow is greatly impared. Not liking what I read here as sounds like it is going to be yet another expensive repair from what I though was a High Quality Automobile - Mecedes - NOT! just a very expensive automobile to maintain and OFTEN! very disappointed!
8 people like thisFlag inappropiate
clicking noise under the center of the dash upon starting the vehicle. Heater only blows at the windshield and never anywhere else no matter how I set the air flow controls.
8 people like thisFlag inappropiate
So, is it okay to drive the car if the Stepper Motor Actuating Arm is broken? I certainly would not want to further damamge the car. Just want to know how much time I have to get my monies together.
5 people like thisFlag inappropiate
Clicking sound behind the dash. Clicks 8-9 times then stops. Dealer diagnosed as a $439 repair.
3 people like thisFlag inappropiate
same clicking noise behind dashboard
3 people like thisFlag inappropiate
Price of $1200.00 to fix and this prices not from the dealer.
2 people like thisFlag inappropiate
broken stepper motor actuating arm
2 people like thisFlag inappropiate
I have the exact same problem. At every start there is a ticking sound coming from behind the air vent and last for few minutes. Air conditioning has been effected since then.
1 person likes thisFlag inappropiate
As described by others, clicking noise heard when turning on Heat / AC. Sounds like flappers moving in vents as air flow changes between outlets. Usually stops after a few minutes. Quita annoying.
1 person likes thisFlag inappropiate
clicking sound from the front dash sounds like it comes from the back for about three min then goes away
Clicking noise behind the dashboard
yeah thats it
problem continues, I cannot afford the repairs on this car anymore, there have been too many
makes clicking noise center of dash board
I have the same clicking noise from behind the steering wheel, with interrupted air flow. lasts for about 3 mins..
Same issue...sound happens upon start-up and lasts about 30 seconds. Some air flow settings no longer work. I wonder why it happens when I start the car even though the fan blower is of? Mechanic said $800 due to labor: have to remove the dashboard console to access the and replace the part.
Clicking behind dashboard
I had the clicking sound but got it fixed.
Clicking noise several times on engine startup in the dashboard.
Clicking noise center of dash and AC leak detected behind cabin air filter
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