NHTSA Complaint #11612822 — 2021 BMW R 1250 RT

Original owner, purchased July 2021. Adaptive cruise control (ACC) continues to drop off intermittently after numerous complaints to BMW service techs and BMW Customer Relations since new. Attempts to repair include dealer 'recalibration' and software updates none of which have solved the issue. When in use, ACC suddenly, without warning drops out leaving driver to actively recover previous speed (throttle). Not such a problem at lower speeds, however at highway speeds the dropout could be life-threatening. In my case, traveling the posted 85mph highway speed outside of Salt Lake City, the ACC dropped out. The sudden deceleration nearly threw me from the motorcycle as if I had suddenly braked at highway speed. The highway was congested with the vehicle behind me having to emergency brake to avoid a collision. Most recently, on August 27th, 2024, I brought the motorcycle to a BMW dealership in Anchorage, Alaska for annual service and to request warranty repair of the faulty ACC unit. I showed images of the failure notifications, gave history of previous repair requests and repair attempts by other dealers. The service manager assured me he would contact BMW tech support to resolve the issue. After a mandatory software update and 'recalibration' I rode the motorcycle home. The unit failed three times over the 400-mile trip. Ultimately, the service center failed to complete warranty service on the ongoing life-threatening ACC failure due to lack of technical expertise to address the issue and false narrative of contacting BMW tech for a solution.