A/C auto turn on

[td163]

Hi all, sometimes when I turn on the car the A/C switch turns on automatically. I imagine it thinks it's too hot.

I thought it may have been controlled via the little fan and sensor in the overhead light module but still comes on sometimes with it unplugged.

Any ideas?

[tigerstyle]

It auto comes on if you have the vent at the windscreen position, or if re-circ is on.
I think it has to be really hot, 30°C+(?) for it to auto come on with the vent dial at other positions.

[td163]

Perfect! Thanks mate

[Poodle]

It comes on automatically every now and again to prevent the pump from seizing from disuse.