Have 2 stepper motors with the "1- 2 second" click lasting 30 seconds or so on start up. Assuming the problem is the stepper actuators (arms).

Want to have all repair parts before disassembling the dash. There are 2 actuator repair kits. One has about ~10 parts and the other has 2 actuators. The kits seem to be mutually exclusive (unique) with respect to the repair parts.

Is there a way to ID the suspect Steppers to possibly avoid buying both kits. Hidden codes in the climate unit ? trouble shooting guide?

Has experience shown that certain actuators are more likely to crack than others.

Any guidance to expedite the repair appreciated.

Chip
2004 CLK320

 

that is all just luck if it happens. just got my stepper motor from ebay for 30

although removing the dash is hard work i guess

 

If you have an advanced scanner (or SDS) that can pull codes from the ACC, you'll know which one(s) aren't working.

 

rodney i have to change the one of the upper ones into the dash. so the dash must be removed.
can this rtepair be done at my home? if i have all the tools for the bolts? and a official mechanic with me?

 

i am very close filling the deal here. i got for a few $ a working stepper and found a mechanic willing to do it at the official benz service for 150Euro i guess him at my home would be like 80 euro or sth . lol