Question Details

about 5 seconds after ignition, there is a 'clicking' at about 1 second intervals coming from behind the centre of the dashboard (entertainment system area). It continues for around 1 minute then stops and does not repeat until the car is switched off and re-started.


Profile picture for user MBFanatic

MBFanatic  1 year ago

That sound is caused by a stuck or broken stepper motor. The motor moves the flaps to direct air up to the windshield, driver or your feet. They fail and that's why you hear that noise. 

Profile picture for user Paul's Merc

Paul's Merc  1 year ago

Thankyou.. makes sense. Very helpful, cheers.

Add new comment

The content of this field is kept private and will not be shown publicly.