HVAC/Radio/Nav Control Issue

Originally Posted by gurneyeagle

Anyone else have an idea? What's the controller?

Originally Posted by SouthArk370Z

I'd try cleaning the control potentiometers/rotary encoders. Might not be the problem, but they should be fairly easy to clean. Remove the knobs and there should be small holes that you can spray some contact cleaner into. Give it a few small shots of contact cleaner and turn the knobs back and forth a few times. See if the controls are working. If so, give a tiny spray of WD-40 into the hole (optional) and put the knobs back on. If not, repeat cleaning process.

Originally Posted by kenchan

not sure on the RICH PEOPLE nav unit ones, but the POOR PERSON'S BASE like mine has a hvac control module behind the 3 dials. during stereo install we unplug that to separate the HU from its bracket.

i suppose the contacts could become intermittent... but not sure. the WD40 trick to clean the contacts is a good idea though.