BMW Z4 Suspension Height Imbalance Causing Headlight Issues

I had a similar issue with my 2012 BMW M3 last year. The symptoms you're describing match exactly what I experienced, uneven ride height and misaligned headlights. Turned out the control rod sensor was defective, which messed with the car's self-leveling system. Got it fixed at a garage after my regular mechanic couldn't figure it out. They had to replace the control rod sensor and recalibrate the entire suspension system. The headlight issue resolved itself once the suspension was properly leveled. It was a serious problem that needed immediate attention because it affects both safety and vehicle handling. The repair wasn't too complicated, but it required specific diagnostic equipment to properly reset the system. In my case, they also found some wear on the control arms while they were at it. Worth getting it checked soon, these suspension issues tend to get worse and can cause additional problems if left unchecked. Just make sure to find a shop that specializes in BMW suspension systems. They'll know exactly what to look for.

Thanks for sharing your experience! It's really helpful since our issues sound nearly identical. I've been looking for someone who's actually dealt with this problem on a BMW. Quick question, do you remember roughly how much you had to shell out for the fix? Also, has everything been running smoothly since the repair, or have you noticed any other quirks pop up? I want to make sure I budget properly and know what to expect. By the way, good call on mentioning the specialized shop. I've been doing some research on garages that know their way around BMW suspension systems.

Hey there! Happy to give you an update on my M3 situation. Since you asked, the fix cost me 110 € for the control rod sensor replacement and recalibration. Pretty reasonable considering the headache it was causing! Great news is everything's been running perfectly since I got it sorted. That "Height control restricted" warning completely disappeared after the repair, and the car's been sitting level as it should. The headlights are properly aligned now too, which makes night driving so much better. Really glad I went to that specialized shop, they nailed the diagnosis right away and sorted it without any drama. Haven't had a single suspension-related issue since then, and it's been about a year now. The handling feels spot-on again, just like when I first got the car. Just make sure whoever works on yours has the right diagnostic equipment, that's crucial for these BMW suspension systems. Trust me, it's worth getting it done properly the first time around!

Just wanted to update everyone, finally bit the bullet and took my Z4 to a mechanic last week! You were spot on about the control rod sensor. Found a specialist shop after doing some digging online, and I'm really glad I did. The mechanics there knew exactly what they were dealing with. Total bill came to a bit more than yours, they found some worn bushings that needed replacing too. But honestly, it was worth every penny. The car's sitting perfectly level now, and those annoying headlight issues are completely sorted. What a relief not seeing that warning light anymore! The whole experience wasn't nearly as painful as my last mechanic visit. These guys were super professional and actually explained everything they were doing. Car's driving like a dream now, feels just like when I first got it. Thanks again for your help! Really appreciate you sharing your experience. Saved me loads of time and worry knowing what to expect going in.