2025 Cadillac XT4 owner complaints

The Onstar service will not operate. The Onstar system drains the batter so the car will not start. Cadillac cant get the operative part for the Onstar, the telematic module. So the car is sitting at the Cadillac dealer and cant be repaired..

The contact owns a 2025 Cadillac XT4. The contact stated that the vehicle independently started after it was parked and turned off. The contact stated that the failure was intermittent but was a recurring failure. There was no warning light illuminated. The vehicle was taken to a local dealer, where it was diagnosed, and determined that the computer system needed to be reset. The vehicle was repaired; however, the failure reoccurred. The manufacturer was not informed of the failure. The failure mileage was approximately 17,000.

The vehicle’s OnStar system, emergency calling features, and built-in navigation/maps do not function properly. The maps do not work, emergency calling is unreliable, and OnStar is unable to accurately locate my vehicle. This is a serious safety concern because these systems are intended to provide immediate emergency assistance and precise location information. I am the primary caregiver for my minor son, who has significant medical conditions like heart failure and requires ongoing cardiac care. In the event of a medical emergency while driving with him, it is critical that emergency services be able to locate us immediately and accurately. Because the vehicle cannot reliably provide location data or emergency communication, emergency responders may not be able to find us if assistanc

Telematics Controller has gone out. Took 2 weeks to get vehicle into dealership. After diagnosis we are told there is no availability on the part and no backorder or visibility as to when it will be available. Functionality of vehicle, value and user safety has been effected as safety and convenience features originally on the vehicle no longer function and cause distraction.

The contact owns a 2025 Cadillac XT4. The contact stated that while driving at various speeds, the brake pedal was depressed to the floorboard, with the check engine and an unknown brake warning light illuminated. Due to the failure, the contact had the vehicle towed to a dealer, and the vehicle was diagnosed with a defective brake module. The vehicle was repaired under warranty. The contact stated that a week after the vehicle was repaired, the four tires seized while in reverse(R). The contact was able to drive the vehicle to the dealer, and the vehicle was serviced for a defective backup sensor. The contact stated that while driving at 20 MPH, the brake pedal depressed to the floorboard with the same warning lights illuminated. The contact continuously pumped the brake pedal to stop the

On July 28, 2025, while driving the vehicle on public street, a warning flashed that the brakes have failed. In fact the brakes were totally inoperative. Driver was able to clear traffic and exit the roadway without incident. The Cadillac dealership found no issue with the brakes, but did "update the brake control module." In March, 2026 a crack in the windshield appeared. Safelite Company was unable to replace the windshield, as their computer showed several modular errors, preventing them from recalibrating a new windshield. The car was taken to the local Cadillac Dealer, who was presented with a printout showing the following: Code U1961-92, "fail since clear. Code U164E-00, "fail since clear. Code U1605-00, "fail since clear", Code U1974-00, "fail since clear", U197A-0

Since we purchased the vehicle, the Heads-Up display is too low, even in its highest adjusted setting. My wife is [XXX] and can only see part of the heads-up display. I am [XXX] ' tall and have to adjust the seat so far up that my head almost touches the roof to see the heads-up display on the highest setting. Dealership reports that no one else has reported the issue and will require taking the entire dash apart to diagnose. It is a safety hazard only being able to see part of the Heads-up display while driving and being so low in the windshield. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Multiple issues: Leaking transmission fluid, multiple issues with on star system, side detection system, lane keep assist. On star issue involves being unable to contact an advisor in the case of an emergency. Apps in car work intermittently, including Google Maps which is imbedded in the vehicle system. Dealership has stated that onstar and map issue is ongoing and multiple complaints have been received about this issue. Transmission leak started appears to have started right after the purchase of the vehicle. Lane Keep assist and side detection system displayed error message stating that the systems needed to be serviced.