2021 Volvo XC40

On July 1st 2025, while slowly reversing out of my driveway at approximately 3–4 mph, the vehicle’s collision detection system errantly detected an imminent collision. Despite there being no obstacles, vehicles, pedestrians, or objects in the vehicle’s path, the system abruptly engaged the automatic emergency braking (AEB). This sudden and forceful braking caused me to experience whiplash due to the unexpected jolt. There was no prior warning or indication of a malfunction, nor any alert from the vehicle indicating why the braking occurred. After exiting the vehicle and inspecting the surroundings, I confirmed there were no obstructions behind or near the vehicle. This appears to be a false positive detection by the vehicle’s collision avoidance system. This incident raises serious concerns about the reliability and safety of the AEB system, particularly in low-speed reversing situations. An erroneous activation of this kind can result in injury to the occupants, potential rear-end collisions (in other traffic scenarios), and may also contribute to driver mistrust of critical safety features.

The contact owns a 2021 Volvo XC40. The contact stated that while reversing, the back over prevention screen image malfunctioned and started flickering before displaying a blank screen. During the failure, the message "Camera Unavailable" was displayed. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure. The contact was informed that the vehicle was recently repaired under NHTSA Campaign Number: 25V282000 (BACK OVER PREVENTION). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 36,000.

Rear collision warning system activated without reason. While stopped at a traffic light the RCWS activated and the emergency brake system engaged. This has been reported before to NHTSA. Vehicle was at the dealership for repairs or to identify the issue. Had to have it towed and dragged onto the flat bed tow truck as the cars emergency brake system was engaged and couldn't be disengaged. Received vehicle back and was told to bring it back once it happened again, which it has twice. But this time, emergency brake did not get stuck and have to be towed. It occurs without a vehicle or anything behind the vehicle and the vehicle was not in reverse when the system activated. I have contacted the Volvo consumer affairs to see if they could assist with resolving the issues as the vehicle remains in an unsafe driving state. They explained to me that it was up to the dealership/shop to locate the problem and they couldn't do anything to help. Which the dealership only suggested a replacement of the hydraulic brake system and I was advised that it might not fix the problem. I've since then been instructed to bring the vehicle back again for them to continue their road testing of the vehicle. The first time the vehicle was left for road testing it was only driven under a mile as per the recorded data showed through the Volvo car application with GPS and mileage tracking. This was explained to the service manager who reiterated to the service technician manager to road test the vehicle again. It was only driven approximately 30 miles with no issues identified by the technicians. I am currently waiting to bring the car back to the dealership for further troubleshooting / road tests.

Backup camera fails intermittently at least a dozen times, error message "camera unavailable". Camera icon disappears from dash. Took to dealer. No code, no problem. Backed up and worked, did not understand intermittently?! Asked tech to report to Volvo, got push back. I advised I was reporting as safety failure to SaferCar and they report to Volvo. Suspect was not reported to Volvo. When camera fails other rear safety systems are inoperable.

The contact owns a 2021 Volvo XC40. The contact stated that the vehicle was delivered to his residence by the local dealer. Upon inspection, he became aware that the automatic emergency braking system sensor was not operating as designed while reversing with an object nearby. The local dealer was made aware of the issue however, no assistance was offered. The vehicle was not diagnosed nor repaired. The manufacturer was made aware of the failure. The failure mileage was 7.