Climate control not turning on-2004 X5

[David.X5]

thats all the sources of power. There is a signal wire from the main engine computer (DME) which I guess is what wakes it up. But that still doesn't explain why you don't have 12v on the power leads. You probably need to work backwards until you find a connector that got wet that is causing the fault. I can't think of anything else to suggest.

When I had a bad wire in my DSC circuit, a local Indy had software (gt1 maybe) that could test the wiring harness and report which wire had the open - still had to physically find it, but at least you know what to look for. It may be worth calling around any local BMW shops and see if they can do that for you. Of course, it was almost $1000 before that was done. In hindsight, I could have just bought a new engine harness and swapped them out.

[apocalapsi]

Well I have it dry as best as can be, we will see how it is overnight. Still on a hunt for a wiring diagram for the climate control. Id like to know where it gets its power from.

[apocalapsi]

Doesn't anybody know where that three pin black power connector for the hvac leads to? It looks like it may go through the console but im not sure. Anybody?

[apocalapsi]

Well it turns out the drain hose behind the passenger side pillar for the sunroof was pinched and water was leaking from there the dash to the floor. I thought it was the windshield but it was good. Now to sort out the ihka, its probably a bad ground behind the glovebox giving me no power.

[apocalapsi]

Anybody explain this diagram to me. I have good fuses but no power at the red/vioket wire which is part of the x18341 connector. It looks like it goes to X10458 which i cant figure out where this connector is. I also checked the ground at x492 and i think it's fine. Need some good input please .