On or about XXX, I was the authorized subscriber and driver of a 2026 Cadillac CT4 owned by Flexcar, VIN [XXX]. While driving near [XXX] and [XXX], multiple dashboard warning lamps suddenly illuminated and a brake-assist warning appeared. The braking response became abnormally stiff or limited, and I nearly rear-ended another vehicle. The suspected systems are the service-brake/brake-assist system and the vehicle’s electrical or electronic-control system. The exact cause is UNKNOWN. There was no separate advance warning immediately before the incident; the warning lamps and brake-assist message appeared when the malfunction began. I photographed the illuminated dashboard. A similar event had previously occurred in this vehicle, and I experienced substantially similar symptoms in another Cadillac CT4 supplied by Flexcar. I immediately reported the incident, stopped driving and followed Flexcar’s towing and return instructions. The vehicle is now in Flexcar’s possession and may be available for inspection through Flexcar, but access is outside my control. Flexcar states that it inspected and tested the vehicle but could not reproduce the condition. Flexcar has not provided diagnostic codes, technician findings, the inspection facility or detailed test results. To my knowledge, no authorized Cadillac dealership, manufacturer representative, police agency, insurer or independent service center has inspected or confirmed the malfunction. I opened a case with Cadillac Customer Assi
2026 Cadillac CT4
Routine
Owners filed 1 complaints about this vehicle with federal regulators, most often about the forward collision avoidance › warnings. No safety recall has been issued.
What fails
| Component | Reports | Crashes | Fires | Injuries | |
|---|---|---|---|---|---|
| Forward Collision Avoidance › Warnings | 1 | 0 | 0 | 0 |
What owners reported
Newest filingsForward Collision Avoidance › Warnings
Filed Aug 31, 2026CA
1 of 1 complaints, reproduced as filed.
Reading this record
No unusual pattern of severe incidents in the complaint record.
Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.
Most recent recall on file: none. Source: NHTSA Office of Defects Investigation.