Hello,
I have a problem with my 2004 530i E60, I am hoping someone can assist me with.
Fuse 30 in the glove box (Air conditioning-Automatic) is draining the battery within ~an hour.
This doesn't seem to be a "module not going to sleep" - this seems more like a short circuit on that circuit.

If I remove fuse 30 in the glove box (Air conditioning-Automatic) the car / battery will last for months.
If I re-install fuse 30 in the glove box (Air conditioning-Automatic), the battery will be completely drained flat within an hour or less.

I've done a LOT of looking around online for this issue and I can see a lot of different suggestions
"Master ballast resistor"
"Final stage unit"
etc ..

I don't want to just blindly start replacing parts hoping for the best.
Is anyone able to tell me what is on this circuit so that I can pin point this issue?

Thank you in advance for anyone who took the time to read this far. 🙏

 

You need to isolate the culprit on that circuit. A wiring diagram or an electrical specialist would help.

 

You know the circuit so just like @donpb stated need to isolation the parts on that circuit. Start unplugging and see which part is draining the battery.

 

Heck looking at the diagram the IHKA is the only thing on that circuit so replace it. If you think it's a short then you'll have to look at the wires. Honestly I would hook it up to INPA and run some tests to double check it but that's telling me you need an IHKA from what you're explaining