While driving on the highway, my vehicle suddenly engaged the brakes without any obstacle ahead, creating a dangerous and frightening situation. Immediately after this incident, the Check Engine and Transmission System warnings also appeared. This vehicle is still new, and it is completely unacceptable to experience failures in major systems like AEB, engine, and transmission. I have since learned about TSB #24-NA-053, which describes false AEB activations in XT4 models. My concern is that my vehicle may be affected. This car was purchased without notification of this issue from the dealership regarding the xt4 and obviously it was also not resolved upon my purchase of the car. My report from on star is below: From: OnStar Notifications Date: June 8, 2025 at 5:44:41a€¯PM EDT To: jennmorgan73@gmail.com Subject: Vehicle Diagnostics: These are the results from your recent On-Demand Diagnostic for your 2024 Cadillac XT4  OnStar(R) Dear JENNIFER MORGAN, Here are the results of your recent On-Demand Diagnostic request on your 2024 Cadillac XT4. ModuleDiagnostic CodeDiagnostic InformationRecommended Action ECM – Engine SystemP0700Transmission Control Module Requested Malfunction Indicator Lamp Illumination. The DTC is an informational DTC. The DTC indicates an emission related DTC set in the Transmission Control Module.Service within 7 days SDM – Airbag SystemNoneNo Error Code FoundNone VIU – OnStar SystemNoneNo Error Code FoundNone TCM – Transmission SystemU0447Vehicle network communication code. The network provides a communications link between systems inside the vehicle and when the network is disrupted a code can be set. If vehicle functionality is impacted please seek service soon.Service within 7 days BOI – Bulb Outage IndicatorsNoneNo Error Code FoundNone ABS – Braking and Stability SystemNoneNo E