alex12342011

Hi guys. I have a 2003 clk320 which is making a clicking sound , it happens when you turn the ignition on and appears to be coming from under the steering wheel. When I turn the ac on as this happens, the air starts to fluctuate (gets weak then picks up slightly) with every click, then it goes away. Here is a video
http://www.youtube.com/watch?v=OUHJUOcJY2o

I would appreciate some input, maybe someone has experienced this before? Thanks in advance.

Supafly

that would be a stepper motor failure. most likely a broken arm....i too had this problem....

Search for " stepper motor failure"

you will find some threads and there is also a DIY for it, if you are mech-inclined.

M-bENZ

dang that clicking noise is so loud...hope u get it fixed.

Andy

alex12342011

Thanks alot supafly for your input
And yea, that clicking noise is very annoying lol.

alex12342011

After reviewing the thread on the diy of getting to your stepper motors, I just have one question. The instructions by liveniceguy were performed on a c240, I have a clk320, will I run into any large problems following his instructions?

Here is the thread. https://mbworld.org/forums/c-class-w...hissing-2.html

Tcrawman

Did you fix your motor issue? My clk320 is doing it now
I bought the motor and arm but haven't dove into fixing it. Were the dyi steps a lot different on that car than the 320?

Supafly

I tore apart my entire dash to get at one stepper motor, plan for a whole days worth of work. It is not a walk in the park.

removing parts is easy; putting it back is hard.

Tcrawman

Luckily I'm pretty good at this stuff. It's already apart, took about 2 hours so getting it back should be a little less. I found the part for $66 for the kit so I'm changing all the levers I come across

Tcrawman

She's all done!! Took about an hour to put back together. If anyone wants to buy the gear/lever set, it's yours for $50 plus shipping. In box me. Has all the parts.