it sounds like a steering column cover (steering wheel rubbing or intermitted touching to cover or turn signal controller issue or (and this term is odd) 'clock spring' noise. i did one today on a w203740, right footwell flap actuator. Regardless, the air flow/strength and temperature seem unaltered. I have my W203 (Automatic Transmission 722.Step 2: Press the buttons for recirculating air and defrosting at the same time and hold them for.