BMW X7 AC and Temp Controls Failed, Seeking Solutions

Hey there! Had a similar issue with my 2017 BMW X5 40i last winter. The symptoms you're describing match exactly what I experienced, AC not working and temperature control issues. Initially thought it was just low refrigerant, but turned out to be a faulty connection in the wiring harness for the climate control module. The cables had some corrosion and weren't making proper contact. My mechanic found this after running a diagnostic test. The repair wasn't too complex, mainly involved cleaning the connections and replacing a damaged plug. It wasn't a major mechanical issue, but definitely something that needed professional attention. If left unfixed, it could've led to more serious electrical problems. Worth getting it checked soon, especially since these issues tend to get worse over time. Make sure they do a proper diagnostic test first before replacing any parts. Best of luck with the repair.

Thanks for sharing your experience! That's really helpful to know about the wiring harness issue. Quick question, do you remember roughly how much you ended up paying for the repair? Also, has everything been working smoothly since then? Just want to make sure I'm prepared for what I might be facing with my X7. The symptoms do sound eerily similar to what you went through.

Hey again! Happy to give you an update! So after taking your earlier advice, I got my X5 checked out and you're right, the symptoms were identical. The mechanic found it was indeed the cable connection to the rear ventilation flap that was causing all the trouble. Got it fixed for 95 Euro, which honestly wasn't as bad as I was expecting. And the good news? Everything's been working perfectly since then, proper cooling, back seat temperature control, the whole deal. The error code's gone too. Seriously, it's like having a new climate system. Looking back, I wish I'd gotten it sorted sooner instead of worrying about it. If you're seeing the same issues with your X7, I'd definitely recommend getting it checked out. The fix was pretty straightforward and quick, definitely worth every penny to have properly working AC again. Let me know how it goes if you get it looked at! Hope this helps give you a better idea of what you're dealing with!

Thanks so much! I actually just got back from the mechanic today. You were spot on about getting it checked out sooner rather than later. The technician found a similar issue, faulty wiring connection to the ventilation system. Got it all fixed up, and the total came to about 120 with parts and labor. The relief of having working AC again is incredible! No more sweating in the back seats, and that annoying error code is finally gone. The mechanic was really thorough, even showed me the corroded wiring they replaced. Definitely feel better about the whole situation now. Really appreciate you sharing your experience. It helped me feel more confident about what needed to be done, and stopped me from worrying too much about potential costly repairs. Sometimes these BMW issues sound scarier than they actually are. Thanks again for the help!