Quote:
Originally Posted by Adriel
So I am doing something wrong. How does one know when they are on the automatic setting? What does it control, fan speed AND temperature?
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Sorry, when I read the thread the first time I thought it was you who mentioned a w126. I now see it was the other respondent.
You always need to specify the model and year of car you are asking about.
I doubt you are doing something wrong. Assuming for now this is a w123 or a w126....
When you
1. push any button except defrost or 0 (off) and
2. set a temperature setting on the wheel, and
3. push the middle button on the fan speed controls
The system should maintain the selected temperature (fan speed will increase while the interior warms up, then automatically slows when the selected temp is achieved).
If this is not happening, there is a fault somewhere in the system.