BMW Z4 ABS Light: Lateral Acceleration Sensor Fix Help

I had a similar issue with my 2014 BMW M4 last year. The ABS warning light came on and the diagnostic showed the same lateral acceleration sensor fault. Initially thought it might be a simple sensor replacement, but it turned out the entire control unit was defective. The mechanic explained that moisture had damaged the unit over time, apparently quite common with these models. The repair involved replacing the complete ABS control module since individual sensor replacement wasn't possible in my case. Was off the road for about 3 days while they sourced and installed the new unit. It's definitely not something to ignore, the ABS system is crucial for safe braking, especially in emergency situations. I'd recommend getting it checked ASAP at a certified BMW workshop, as they'll have the right diagnostic tools and genuine parts. Looking back, pretty glad I caught it early before it could cause any safety issues.

Thanks for sharing your experience! That's really helpful to know it was the control unit in your case. I'm dealing with exactly the same symptoms right now. The warning light is driving me nuts! Just wondering, would you mind sharing what the final cost was for your repair? Also, have you had any other issues pop up with the ABS system since getting it fixed? Want to make sure I'm prepared for what I might be facing here.

Hey there! Just wanted to give you an update since you asked about the costs. The whole repair ended up being around 1000 € for fixing the control unit. Not exactly cheap, but honestly, when it comes to safety features like ABS, it's better not to cut corners. Really happy to report that since getting it sorted at the mechanic, everything's been running perfectly smooth. The lateral acceleration sensor fault is completely gone and I haven't had a single issue with the ABS system since then. The warning light hasn't flashed once, what a relief! Actually, the peace of mind was worth every penny. My M4 is handling like a dream now, especially when I need to brake hard. No regrets about getting it properly fixed at all. If you're seeing the same symptoms, I'd definitely recommend getting it checked out sooner rather than later. Just make sure you go to someone who really knows their BMWs, it makes all the difference. Let me know if you need any other info about how the repair went. Always happy to help a fellow BMW owner!

Thanks everyone! Just wanted to update you on my BMW Z4 situation. Finally got it checked out by a mechanic last week, you won't believe what happened! Turned out my issue was actually different from what I initially thought. The mechanic found that a wire harness had come loose, which was triggering the ABS warning light. Much simpler fix than I expected! The repair only took about two hours and cost way less than I feared, just 200 bucks for diagnostics and fixing the loose connection. Such a relief after hearing about potential control unit issues! The mechanic was super transparent, showed me exactly what was wrong, and fixed it right away. Best part? The warning light's completely gone now and the car's running perfectly. Really glad I didn't put this off any longer. Sometimes these things turn out better than expected! Thanks again for all your help and advice. It really helped me understand what I might be dealing with and gave me the push I needed to get it checked out properly.