NHTSA Complaint #11587326 — 2023 BUICK ENVISION

2023 Buick Envision. Brakes failed. This was a new car driven 1k miles. There was no warning notification, no alert and no dashboard lights prior to this incident. Of course I had expected the normal brake resistance when I stepped on the pedal. Instead, my foot sunk closer to the floor. I pressed the pedal as hard as I could a few times until it slowed to a stop. I do not drive fast so this was to my advantage. I was later told that the Allstate Milewise device that I had been using was not recommended but in this case it was not a factor. The service manager shared documentation that there was potential system conflicts with this. This was not disclosed to me with my 2020 Envision. Therefore, I continued to use it in the 2023 vehicle. I forwarded the information to Allstate, so they could investigate further. I received call back saying to return the device and find alternative insurance options. When I was told to pick up my car, I asked what was found to cause the brake failure and to highlight the fix in the receipt. A reset of the software was the final fix: LOOKS LIKE ALL MODULES ON CAN BUS 2 LOST BRAKE CONTROL MODULE TESTED CHARGING SYSTEM WITH THE DCBS AND PASSED PERFORMED GLOBAL RESET SCANNED ALL MODULES DID FIND UPDATE FOR THE SERIAL DATA GATEWAY UPDATE MODULE 45YY212842554” I was told that until this happens again that is all they can do.