Cadillac XT5 driver assist warning messages issue, similar to family member's experience after thermostat replacement on Cadillac XT5

Some Cadillac XT5 owners report experiencing driver assist warning messages, such as "Steering Assist is Reduced Drive with Care," which often indicate issues with the steering assist feature. These warnings may be triggered by factors like an invalid coolant temperature signal from the ECM, impacting the steering module's performance in cold conditions. Additionally, persistent service messages for brake assist, driver assist, and stability assist, particularly when at a stop light or in proximity to larger vehicles, can suggest deeper underlying issues. Some owners also report a loss of power steering assist alongside diagnostic trouble codes (DTC) like C0460 and/or C0545. To mitigate these warning messages related to driver assistance features, it is crucial to ensure that systems like Lane Keep Assist and Adaptive Cruise Control are functioning properly and are not obstructed by external factors. When encountering a "Steering Assist Reduced, Drive with Care" warning, prompt servicing is recommended, although driving to the service center should be done cautiously. Furthermore, if the Driver Attention Assist system triggers warnings, cleaning the steering wheel camera may be necessary for optimal functionality.