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The mkiv Supra Owners Club

Heater/Fan controls have gone crazy!


martin1982

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OK I'm gonna try to keep this simple...

 

Switched the car on the other day, all lights light up as normal. Press the switch to have the air blown into my face... nothing.

 

Try to switch the air to be blown on to my feet... nothing.

 

Press the switch to have air blown on the windscreen, all systems kicked in as usual. Tried to adjust the fan speed to its lowest setting, worked OK, but when i tried to tuen the fan speed up again... nothing.

 

By this point I had resorted to "Push all buttons till something happens"

 

When I turned on the heated rear screen, the AC kicked in (just as if id pressed the AC button).

 

When I turned the heat above 25, the auto climate control kicked in, the fans turned off and the enitire top row of lighs came on...

 

I've checked the fuses, the connections both in the back of the unit and going into the White box brian contol unit thingy. All OK.

 

Is there anywhere else I should check? Any ideas as to what the prob could be. I'm bruddy annoyed as I've only had the car back a week after it being off the road while it went BPU and having the blue dash conversion (so I'm really hoping i dont need a new unit)

 

I've had a look at some similar issues on the forum, but none of them seem to have the unit being confused as to what the buttons should do when pressed. It does actually seem that the heated rear screen button is now turning my air con on...

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