Air recirculation only works while selecting heat settings but not on cold settings
Thread Starter
Newbie
Joined: Feb 2024
Posts: 8
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Mercedes a207
Air recirculation only works while selecting heat settings but not on cold settings
I have a 2004 w203 .
i noticed that air recirculation works when i select heating but when i select cold settings and press the recirculation button.. the light on the button turns on but nothing happens...the flap doesn't work. I did an actuation test for the flap and it's fine.. i tried changing the controls whith another one.. and the problem stays the same..
anyone can help me figure it out
i noticed that air recirculation works when i select heating but when i select cold settings and press the recirculation button.. the light on the button turns on but nothing happens...the flap doesn't work. I did an actuation test for the flap and it's fine.. i tried changing the controls whith another one.. and the problem stays the same..
anyone can help me figure it out
MBWorld Fanatic!
Joined: Dec 2003
Posts: 3,275
Likes: 236
From: BC, Canada
2003 C230K Coupe Orion Blue
A bit of a long shot, but have you tried recalibrating the motors? Press and hold the (front) defrost and recirculation buttons until the yellow and orange lights start flashing. Give it a couple of minutes to cycle every motor, then turn off the ignition and wait another 2 minutes for the unit to lock in the calibration information.
The other possibility may be that there's something built into the controller logic, and that the system is actually working properly.
The other possibility may be that there's something built into the controller logic, and that the system is actually working properly.
Thread Starter
Newbie
Joined: Feb 2024
Posts: 8
Likes: 1
Mercedes a207
A bit of a long shot, but have you tried recalibrating the motors? Press and hold the (front) defrost and recirculation buttons until the yellow and orange lights start flashing. Give it a couple of minutes to cycle every motor, then turn off the ignition and wait another 2 minutes for the unit to lock in the calibration information.
The other possibility may be that there's something built into the controller logic, and that the system is actually working properly.
The other possibility may be that there's something built into the controller logic, and that the system is actually working properly.
I did the calibration method.. didn't work
Thread Starter
Newbie
Joined: Feb 2024
Posts: 8
Likes: 1
Mercedes a207
