2021 HONDA CMX1100

Hello, I recently drove 600 miles and experienced numerous random, frightening and dangerous occurrences of "phantom braking" while in cruise control mode. The car suddenly slammed on the brakes (I could hear the tires screech) while the highway was almost always completely empty, and always complet... ely devoid of any potential danger. In three occurrences, the car was confused by something physical (albeit posing no danger at all): it was confused a "divide highway" sign post at the beginning of a divided highway median, the distant back a truck, a least a quarter of a mile ahead, and an incoming truck a least a quarter of a mile ahead in a long curve. In all other occurrences -the vast majority of occurrences- whatever triggered "phantom braking" was nowhere to be seen (the highway in front of me was completely empty of any traffic or obstructions), and never materialized. My safety and the safety of drivers behind me (and potentially in other lanes in case of a pile-up) was compromised during every occurrences. I stopped using cruise control when a car or truck is behind me. I contacted Tesla Service. They did an over the air check and said that there was nothing wrong with the system, that each occurrence provided data to improve the Beta system (it would have been nice to be told when I purchase the car that my family and I were Beta testers of an automotive safety product), and that Tesla is "working on a firmware update". Not very reassuring, and most importantly, no fixes at all to address this dangerous safety issue. Tesla Service indicated that I do not need to bring my car in (since there is nothing wrong with the software and therefore no fix).There was no advance warning before occurrences of "phantom braking". Thank you.Read more

The problem I will describe has been noted over several months, but I will focus on events observed today, March 31, 2023. I was driving from Salt Lake City to Reno, NV on Interstate 80. Weather conditions were partly cloudy, 40-55F, dry roads, light traffic. While driving at highway speeds of 70... -80 Mph using the cars adaptive cruise, the car would repeatedly brake sharply and almost violently, causing me to hit the brake pedal to remove the vehicle from cruise for fear of being rearended. This generally occurred when there was no traffic in front of me, with perfectly clear roads, no debris or obstructions if any kind. The car also braked slightly during this drive, dropping speed maybe 10-15 mph before resuming. These abrupt and inexplicable braking incidents occurred so frequently, probably 20 times or so, that I stopped using cruise control for fear of an accident. This has not yet been reported to Tesla, and has not been investigated. However, I wanted to report this because I feel it is an extreme safety hazard.Read more