I have an intermitant fault with the climate control panel, it all lights up fine but from time to times it doesn't matter what button you press nothing works even though all the lights and display tell you otherwise. It's like you press the button and the signals are not going though, I'm guessing it's just the panel that's starting to break becasue when I loose the ability to alter air flow ect ect ect, the heater rear window stops working too as this in on the same panel.
I've tested the relay for the Heated Rear window and FSU isn't the issue.
Are there anyother components for the climate control hiding in the bowels of the car, say for example some relays on the bulk head that could be getting wet if I have a leek in the windscreen I dont know about.
I read all the car's code and nothing came back relating the HVAC, only codes I received were for a knacked bulb, occupancy sensor and a freez frame which was showing CO2 readings - likely due to it's getting close to a service.
Thanks for reading
ps The car is a e39 528i 2000