My heating system has been on the blink for a year. Fan sometimes works sometimes doesn't (replaced the brushes so its not that), no temp control (only on or off), no heat unless the unit is turned on when you start the car, if heater working and you turn off the heat then it won't come on again.

Anyway...fixed it!

Took out the climate control unit and removed the liitle board at the side of the temp wheel...snaps out but watch for the spring, ball bearing and little copper contact. The copper contact and the inside of the board were very dirty and covered in a dustry crud...kind of like the lint that will gather on the rollers of your mouse. Cleaned up both the board and the copper contacts with alcohol, put back together and reinstalled and now the heater works fine.

While apart I also made sure that the heater hose/channels were air tight. The ones to the heater box in the central console needed some extra weather stripping to seal them and so did the hose going up.

Now all functions are back to normal. Amazing! I guess these things are only as good as their weakest link.

While apart though I noticed that the large flap behind the glove box closes very slowly. Used to be I could hear those flaps shutting and opening with a "snap" (especially when pushing the defrost button) but not anymore. Anyone have any ideas on that?? Still works but slooooowly.