I've been having problems with the HVAC buttons on my '90 practically since it was new. Decided that it was time to solve the problem and put the problem behind me....
The buttons seem to operate with a mind of their own - sometimes they work, sometimes they don't. I can turn the car off and on, same problem continues to exist. I can wait it out - sometimes 20 minutes, sometimes 2 days. But eventually they become functional again (and perhaps another becomes temporarily non-functinal).
I've been told that '89 and earlier dashboard push buttons need to have the button contacts cleaned from time to time to ensure that theyare operating properly. '90 and later should not require cleaning, the design was changed. Don't know if this is true or not. I've never tried to clean my buttons.
The same source suggested that I unplug and replug the HVAC programmer and see if that solved the problem. If it didn't - it was most likely that I needed a new programmer.
I did just that, and all buttons started to work again. Several days later, the problem returned. Each day, it's a different button that refuses to work... Today the off, AC and recycle buttons are not working - everything else is. In the past, temperature and fan control buttons were also affected.
I'm currently shopping for a programmer - I wish there was a definative test to confirm that this is in fact the problem...
Anyone have an opinon? With programmers running $300- retail, I don't want to swap units and have the problem remain!
The unit seems very flimsy and not that technical (on the outside). Wonder why its so expensive.
Anyone know if there is a repair station to send the programmer to for analysis, testing and rebuild?
Any other possible problem area - vacumn leaks, bad valves, button cleaning?
Thanks -
The buttons seem to operate with a mind of their own - sometimes they work, sometimes they don't. I can turn the car off and on, same problem continues to exist. I can wait it out - sometimes 20 minutes, sometimes 2 days. But eventually they become functional again (and perhaps another becomes temporarily non-functinal).
I've been told that '89 and earlier dashboard push buttons need to have the button contacts cleaned from time to time to ensure that theyare operating properly. '90 and later should not require cleaning, the design was changed. Don't know if this is true or not. I've never tried to clean my buttons.
The same source suggested that I unplug and replug the HVAC programmer and see if that solved the problem. If it didn't - it was most likely that I needed a new programmer.
I did just that, and all buttons started to work again. Several days later, the problem returned. Each day, it's a different button that refuses to work... Today the off, AC and recycle buttons are not working - everything else is. In the past, temperature and fan control buttons were also affected.
I'm currently shopping for a programmer - I wish there was a definative test to confirm that this is in fact the problem...
Anyone have an opinon? With programmers running $300- retail, I don't want to swap units and have the problem remain!
The unit seems very flimsy and not that technical (on the outside). Wonder why its so expensive.
Anyone know if there is a repair station to send the programmer to for analysis, testing and rebuild?
Any other possible problem area - vacumn leaks, bad valves, button cleaning?
Thanks -