My 2026 BMW X5 xDrive50e experienced a serious freeway safety event involving loss of braking/brake power, loss of vehicle power/functionality, and multiple vehicle warnings/errors. The incident occurred while I was driving on the freeway and substantially affected my ability to safely operate the vehicle. BMW Emergency Services subsequently towed the vehicle to Irvine BMW on 07/09/2026. Irvine BMW later attributed the event to Emergency Stop Assist (ESA) and the Driver Monitoring System (DMS), rather than identifying a mechanical brake failure. Its written explanation states that ESA can take over vehicle guidance and decelerate the vehicle using multiple short braking jolts. The dealership reported a stored DMS fault but stated that it could not duplicate my reported condition. I have not been provided evidence that the original freeway event was reproduced or that its cause was conclusively established. Irvine BMW initially represented that material covering the display was an aftermarket screen protector and stated that BMW Technical required its removal because it could interfere with the DMS camera. On 07/27/2026, the General Manager apologized and confirmed that the material was actually original BMW transportation protection film. The dealership also proposed reducing ESA sensitivity as an alternative. I remain concerned that the combination of loss of braking/brake power, loss of vehicle power/functionality, and the reported ESA/DMS behavior may represent a seriou