There's only a few things it can be pal.
There's a lil resistor thing under the scuttle panel.. someone please come along and confirm what its called.. anyway easy to replace and do cause a lot of weird intermittent issues like your describing.
The fan motor is under the passenger foot well held in by torx iirc.
Lastly the control panel itself - requires the centre console to be stripped.
Hopefully someone will come along who's had that exact issue and pinpoint which of them is causing the issue. Mine didn't work at all when I got the car, changed the resistor, the panel, checked the motor
.. there wasn't even a motor there!!!
Hope this helps bud
There's a lil resistor thing under the scuttle panel.. someone please come along and confirm what its called.. anyway easy to replace and do cause a lot of weird intermittent issues like your describing.
The fan motor is under the passenger foot well held in by torx iirc.
Lastly the control panel itself - requires the centre console to be stripped.
Hopefully someone will come along who's had that exact issue and pinpoint which of them is causing the issue. Mine didn't work at all when I got the car, changed the resistor, the panel, checked the motor
.. there wasn't even a motor there!!!
Hope this helps bud