BMW iX3 Height Control Failure: Diagnostic Help Needed

Had the exact same issue with my 2018 BMW i4 last month. The control rod sensor was defective, causing incorrect readings for the air suspension system. This messed with the auto-leveling and headlight adjustment systems. Took it to a certified BMW service center. They ran diagnostics and found corroded wiring in the height sensor assembly, plus a faulty control module. It was a serious repair that needed specialized programming after parts replacement. The car was in the shop for three days due to the complexity. Just make sure your mechanic has experience with BMW electric models, these systems are quite different from regular combustion vehicles. Ask them specifically about their diagnostic equipment for BMW suspension systems and if they can handle the programming required after repair. Haven't had any issues since the fix, and the car's running perfectly level now. The uneven ride height is definitely something you want to address soon to prevent damage to other suspension components.

Thanks for sharing your experience! It's really helpful to hear that a sensor issue was behind similar symptoms. Quick question, do you remember roughly how much you ended up paying for the whole repair? Just trying to get an idea of what I might be looking at cost-wise. Also, has everything stayed working properly since the fix? Not gonna lie, I'm a bit nervous about potential follow-up problems with these complex systems.

Hey! Just wanted to follow up about the costs, I ended up paying 110 € to fix the control rod sensor issue. It was actually less than I expected, especially given how worried I was when all those warning lights first popped up! And I'm happy to report that everything's been working perfectly since the repair. The "Height control restricted" warning is completely gone, the car's sitting perfectly level, and the headlights are pointing exactly where they should. It's been about three weeks now, and no sign of any issues coming back. I totally get being nervous about these fancy systems, I was too! But honestly, once they got the sensor sorted out, it was like having a brand new car again. Just make sure you find a mechanic who knows their way around BMW's electrical systems and you should be good to go. These cars are complex, but when everything's working right, they're amazing to drive. Hope this helps put your mind at ease a bit about the repair costs and long-term reliability!

Thanks so much for all the details! Just got back from the mechanic today and wanted to update you. Turned out to be pretty similar to your situation, faulty sensor and some corroded wiring. Got it all sorted for around 130 €, which wasn't too bad considering how worried I was at first! The mechanic I found was really knowledgeable about BMWs. Actually took time to show me what was wrong and explained everything. They fixed it in just one day, got my car back feeling like new. The ride height's perfect now, those annoying warning lights are gone, and the headlights are back to normal. Really appreciate your advice about finding someone who knows these systems. You were right, going to a specialist made all the difference. No more worrying about driving around with the car sitting wonky! Hope my experience helps others who might run into similar issues with their iX3s. Thanks again for helping me figure this out!

What should I do?

(Translated from Spanish)

Start by checking the height control sensor and its wiring for any visible damage or corrosion. If you find any issues, it might be best to consult a mechanic experienced with BMW electric models to ensure proper diagnostics and repair. Let me know how it goes or if you have any other questions!