NHTSA Complaint #11702646 — 2025 CADILLAC OPTIQ

On November 24, 2025, I discovered that multiple connected and safety-related systems on my 2025 Cadillac Optiq had stopped functioning. We believe a GM over-the-air software update was installed the weekend prior, and the dealer has inferred that the update may have caused the failure. We brought the car into the dealership on November 26th. The car was "fixeed" and we picked it up on December 2nd. Before we were able to leave the lot, the telematic system broke again. The dealership inspected the vehicle and confirmed that the telematics module had failed. We left the vehicle at the dealership,. There were no warning lights, error messages, or other indications before the failure occurred. After the failure, several critical safety and driver-assistance systems became inoperable or severely impaired. These include, but are not limited to: OnStar emergency services Automatic crash notification Steering assistance Cruise and speed control Lane-change and driver-assist systems GPS and navigation functions Bluetooth, Wi-Fi, and vehicle internet connectivity Although the vehicle is technically drivable, the loss of these systems poses a significant safety risk to occupants and others on the road. The vehicle cannot contact emergency services in a collision, cannot send diagnostic data, and lacks essential driver-assistance and navigation capabilities. The dealer has confirmed the problem, but the replacement telematics module is currently backordered with no clear timeline, and they stated the delay could last weeks or longer. Because the failure appears to have been caused by a GM-issued OTA update, and because essential safety systems are offline, I am concerned about both the defect itself and the extended inability to repair it due to unavailable parts. UNKNOWN whether GM has conducted a broader inspection or analysis of this update or component, but the failure has been reproduced and confirmed by the dealer’s service department.