2024 Acura ZDX forward collision avoidance problems

“My daughter was driving on the freeway when traffic ahead suddenly slowed. The vehicle issued a forward collision warning approximately three seconds before impact, and she immediately attempted to brake. She reported significant brake pedal pulsation and resistance while attempting to stop. Dashcam footage shows the vehicle's displayed speed decreasing from approximately 49 mph to 44 mph before impact. Additionally, the automatic emergency braking system did not appear to intervene as expected. I recently discovered NHTSA Engineering Analysis EA26006, an active investigation involving the 2024–2026 Acura ZDX and potential braking system failures, including reduced brake assistance and extended stopping distances.”

“The contact owned a 2024 Acura ZDX. The contact stated that while driving on several occasions, the vehicle unintendedly applied the brake with the brake warning light illuminated and an audible alert sounding. The vehicle had experienced phantom braking. The contact stated that due to the failure, another vehicle crashed into the rear of the vehicle. The manufacturer was notified of the failure. The vehicle was taken to the dealer, but the dealer was unable to duplicate the failure. The failure mileage was 18,200.”

“I am reporting repeated unintended automatic emergency braking in my 2024 Acura ZDX. The vehicle was leased new on April 9, 2025 and currently has approximately 9,500 miles. The system involved appears to be the Forward Collision Warning/Automatic Emergency Braking system and related braking controls. The vehicle is available for inspection upon request. On September 14, 2026, while driving at less than 25 mph, the forward collision warning suddenly activated even though there was no pedestrian, vehicle, or other apparent obstruction requiring emergency braking. Immediately after the warning, the vehicle automatically applied the brakes abruptly. The sudden braking caused the driver to be thrown forward, and she experienced neck pain afterward. This is not an isolated incident. The vehicle has experienced similar unintended collision warnings and/or automatic braking events multiple times and at different speeds, including at higher roadway and freeway speeds. These events create a serious safety risk because sudden, unexpected braking can cause the vehicle to be struck from behind, can cause injury to the occupants, and could potentially cause the driver to…”

“The braking system does not engage properly and is worse in the rain. When adaptive cruise control is on, the car does not slow down at every instance when there is a car in front slowing down. When the car finally realizes there's an object/car in front it then slips before engaging in traction control, which seems to make the car actually slide forward rather than attempting to stop immediately.”

“On [XXX] at approximately 700 miles on a 2024 Acura ZDX A-Spec AWD (VIN [XXX] ), the Collision Mitigation Braking System (CMBS) failed to engage during a collision event. The system did not provide forward collision warning and did not initiate automatic emergency braking before impact. The collision resulted in minor damage to my vehicle. There were no injuries. CMBS is a manufacturer-installed automatic emergency braking system designed and marketed as a primary collision-avoidance safety feature; its failure to engage in an impending-impact scenario is a safety-critical defect. This CMBS failure is one of multiple safety system defects on this vehicle. Beginning at approximately 200 miles, the rear Advanced Driver Assistance System (ADAS) developed progressive failures, including: Rear Cross Traffic Alert and Rear Park Assist intermittently non-functional Blind Spot Monitoring failures on both left and right sides (DTCs U197A-00 confirmed by independent pre-repair diagnostic scan) A stress-cracked rear parking sensor housing A factory wiring harness routed incorrectly from the vehicle side, causing mechanical tension on the rear parking sensor connector and…”

“This is the most recent time that the automatic brake on my car kicked in for no reason. It has happened several times and I have made Acura aware of it, but this is the first time it has almost caused an accident because the car behind me almost rear-ended me. A Similar incident happened last year and I brought it in and they did nothing since they could not replicate it. I let the dealership know that there is a recall associated with this and they said that my VIN number does not match any recalls. I made it very clear to them that it is a safety issue and that it needs to be looked into in more depth in the only response they gave me was that sometimes the automatic brakes can be triggered by items that look like bicycles or people. In this case, there was a car in front of me and a car behind me, neither of which look like a bicycle or a person. It happened so quickly and so suddenly that I am not sure if any lights came on. The Acura client relations team so far has not been able to get a hold of a manager at the dealership and this remains unresolved.”