2024 Acura ZDX Collision Mitigation Brake System will activate without warning engaging the parking brake. Has occurred intermittently while driving forward or in reverse. Dealership claims there are no codes and has advised that both front and rear systems should be disabled. Manufacturer states there are no software updates to address this issue. Failure milage approx. 100.
2024 Acura ZDX driver assistance complaints
Page 2 of 2: complaints 11 to 32 of 32, newest first, as owners wrote them.
I’m reaching out regarding a serious vehicle incident that occurred in September 2024 involving my 2024 Acura ZDX. The vehicle i am leasing, accelerated forward into our property under circumstances that remain unclear and crashed into our garage, tearing down approximately half of the structure. During the event, the vehicle struck my girlfriend, causing her to sustain significant injuries, including a fractured femur, fractured tailbone, and a T12 compression fracture. There are several concerns regarding potential failure of vehicle safety systems, including lack of automatic emergency braking activation and no emergency call initiation. The vehicle remains in my possession and has not been repaired. I would like to explore whether a mechanical defect, unintended acceleration issue, or safety system failure may have contributed to the incident. Please let me know if you are available to review this matter. I can provide photos, documentation, and access to the vehicle for inspection.
The contact owns a 2024 Acura ZDX. The contact stated while driving at an undisclosed speed, the Collision Mitigation Braking System (CMBS) engaged erroneously. No warning light was illuminated. The contact stated that the failure also occurred while reversing. The vehicle was taken to an unknown dealer; however, the failure could not be duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 200.
The contact owns a 2024 Acura ZDX. The contact stated while driving at various speeds, the Collision Mitigation Braking System (CMBS) activated the Automatic Emergency Braking (AEB) erroneously. There was no warning light illuminated. The contact stated that the failure occurred more frequently while reversing and occurred intermittently while driving forward. The contact stated that his wife also owned the same model vehicle, which had experienced the same failure. The contact had taken his wife's vehicle to an unknown local dealer, where it was suggested that the Forward Collision Avoidance system should be disabled. The contact had not taken the vehicle to the dealer to be diagnosed. The vehicle was not diagnosed or repaired. The manufacturer was informed of the failure. The failure mileage was approximately 200.
On Wednesday, [XXX], I was driving near an intersection. There was a vehicle in front of me; however, they were accelerating as was I and at approximately the same speed. For no apparent reason, the automatic emergency braking activated and slammed on the brakes for absolutely no reason. This not only scared myself, but my [XXX] daughter in the back seat, and we almost were rear-ended by the car behind us. It was almost as if I was "brake-checking" the person. Both my daughter and I complained of neck pain (almost felt like whiplash) as well as a headache following this incident. There was absolutely no warning that this was going to happen. There were no messages, lights, or any other issues at the time. While this incident has only happened one time, it has happened one time when the vehicle has less than 3,000 miles on. This can quickly become an issue of someone getting rear-ended, or potentially even a road rage situation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
While moving about 40mph, the emergency brake engaged and it slowed car down significantly. However, there was nothing in front of me. I turned emergency braking off due to this issue. Also, during raining day, when backing out of driveway, car's emergency brakes engaged. This happen twice.
Multiple times, while both reversing and driving forward, the vehicle has initiated hard emergency braking maneuvers when no emergency exists -- no rear or front cross traffic, no pedestrians. This is dangerous and could initiate a crash with other cars following the vehicle.
When backing up the car will slam on its brakes when there is NOTHING behind me. Most of the time it is when I am backing out of my driveway it will do it 2-3 times when nothing is there. It has done it a couple of times backing out of a parking space when nothing is there. I reported this to Acura but they didn’t do anything about it.
The forward collision warning and forward collision braking malfunctioned several times triggering false warnings and unnecessary hard braking. My safety was put at risk because the vehicle came to an abrupt, violent stop while in traffic and applied the parking brake. This action not only caused items in my vehicle (e.g., phone, water bottle, sunglasses) to fly to the front of the car and land in the footwells, but also hurt my neck and head from the severe and harsh movement. Additionally, this sudden unpredictable full stop creates a very high risk of the vehicle following me rear ending my vehicle, resulting in further injury and property damage. The problem has not been reproduced or confirmed by a service center as I have not had time to bring the vehicle in for service yet. The vehicle or component has not been inspected by the manufacturer, police, or insurance representatives. There were not any warning lamps, messages or other symptoms of the problem prior to the failure. However, the emergency brake warning has triggered several times without activating the brakes.
The automatic rear braking system on my 2024 Acura ZDX engages unexpectedly and without cause. It happens regularly when reversing, even though there are no obstacles, people, or vehicles behind the car. The sudden braking is jarring and creates a real safety concern, especially in traffic or tight spaces. I took the vehicle to my local Acura dealership, but they had no information or guidance on the issue. Despite this, many other ZDX owners are reporting the exact same problem on forums like Reddit, AcuraZine, and Facebook groups. This is clearly not an isolated incident and should be investigated immediately. The system is too aggressive and unreliable in its current state. It poses a risk of causing accidents or injuries. Acura must address this issue with a software update or recall before someone gets hurt.
On several occasions the car will violently stop as if we have crashed into something but there is nothing there. There is no warning before this happens even though we have the alert setting turned on. This has happened while we are reversing and moving forward. This puts us (driver and passengers) at risk because it is such a sudden and violent stop that it hurts our bodies (neck/back) and it is very stressful. It has not been reproduced or confirmed by the dealership yet
I am writing to report a serious safety defect in my 2024 Acura ZDX concerning the Forward Collision Alert and Automatic Emergency Braking. The system exhibits hyper-sensitivity, leading to unwarranted and dangerous automatic braking events. On 3/17/25, at approximately 4pm PT, I was driving my Acura ZDX on US 101 at 65 mph. A vehicle in front of me changed lanes into my lane. There was ample space between my vehicle and the vehicle that changed lanes. However, the Automatic Emergency Braking engaged the brakes forcefully, bringing my vehicle to a complete stop in the middle of the freeway. The vehicle essentially stalled for approximately 5-10 seconds, and I was unable to accelerate or move forward during this time. This created a highly dangerous situation, as I was vulnerable to being rear-ended by oncoming traffic. This incident occurred even though I had disabled the Forward Collision Mitigation System through the vehicle's settings. The system's behavior indicates a severe malfunction or design flaw, as it overrides the driver's intent and poses a significant safety risk. The fact that the system engaged the brakes when it was supposed to be disabled is very concerning. This hyper-sensitivity and the inability to fully disable the Emergency Braking System are critical safety issues that could lead to serious accidents, injuries, or fatalities. I request that the federal safety agency investigate this matter immediately.
I am submitting this complaint regarding serious safety issues with my vehicle. After a recent 180-mile trip, the car initially functioned without issue during local driving. However, on the morning of February 16, 2025, I encountered multiple warning messages at startup, including "Service Brake Assist," "One Pedal Driving Unavailable, Use Brake for Stopping," and "AUTO HOLD Unavailable." These warnings indicate potential braking system failures, which raise major concerns about the vehicle’s safety and reliability. Additionally, several key safety features became inoperable, including Adaptive Cruise Control and Acura Watch 360 (Supercruise). These features are critical for safe highway driving, and their unexpected failure compromises the vehicle’s performance and driver assistance capabilities. The fact that these systems became nonfunctional without warning creates a hazardous driving condition. Further compounding my concerns, the vehicle emits an electric, clicking sound when the brake pedal is depressed. This noise originates from under the dashboard near the steering column and suggests a possible malfunction in the braking or electronic control systems. Given the nature of these warnings and the potential risk of brake system failure, I am deeply concerned that the vehicle is unsafe to drive. I am seeking immediate resolution and will be bringing the car in for service as soon as possible. I urge the federal safety agency to investigate these issues, as they pose a significant risk to drivers, passengers, and others on the road. Please advise on any next steps or potential recalls related to these failures. Thank you for your attention to this matter.
Traveling 10-15 MPH on street when car immediately stopped/braked and message on screen said something like “forward brake assist applied” or something like that. There was ABSOLUTELY NOTHING in front of me. Thank god there was no car immediately behind me or I would have been rear-ended
The parking brake continously engages when in reverse disabling the vehicle until you manually release it. This happened 6 times and I was not able to safely back out of a parking lot and had to call for a tow truck to take vehicle to dealership. Dealership scanned vehicle for codes but could not find an issue and told me that is part of the safety features. Not sure how safe it is to engage the parking brake 6 times and cause my vehicle to be in traffic. There were no obstructions around the car, so I feel this is a very dangerous malfunction.
When reversing out of a parking spot, a driveway or around a corner, at random the vehicle will activate reverse automatic emergency braking for no reason. Sometimes multiple times in one maneuver. This is dangerous as it leaves you stopped in the middle of a street, particularly distressing when vehicles are coming and you have to take the extra time to take off the parking brake and continue the maneuver, hoping it doesn’t happen again.
I've had my vehicle for almost two months. When backing out of my garage occasionally the automatic emergency braking will engage when no obstacle is behind the vehicle. This has happened numerous times and requires multiple stop/restart cycles to get far enough to actually proceed.
Car will not let me reverse. I have to turn it off to let me back out of driveway. When it rains the water runs down off camera and stops car.
I am writing to formally report a recurring and potentially hazardous issue with the Reverse Automatic Emergency Braking (AEB) system on my 2024 Acura ZDX EV. This malfunction significantly impacts the safety and usability of the vehicle. Specifically, the reverse AEB system frequently engages unnecessarily, applying phantom braking even when there are no obstacles behind the car. This issue occurs repeatedly—at least 3 to 4 times—every time I attempt to reverse out of my driveway. As a result, it is nearly impossible to back out into a busy street safely. Although the AEB feature can be manually turned off, it reactivates automatically with each new ignition cycle, creating an ongoing problem. The constant need to disable the system is inconvenient, and forgetting to do so exacerbates the safety risks. Additionally, I have observed that this issue is not isolated to my vehicle. Several other Acura ZDX 2024 EV owners have reported similar problems, as evidenced in online forums and community discussions. I have contacted the dealership regarding this matter, but a permanent solution has not yet been provided. Given the frequency and severity of this issue, I am concerned for my safety and that of other drivers. I urge the federal safety agency to investigate this matter thoroughly and take appropriate action to ensure that Acura addresses this defect promptly.
When reversing and there’s nothing behind the car , it will automatically brake hard and say remove parking brake.
The vehicle will slam on the brakes randomly without any warning or any object even near by. It will do it repeatedly to the point where I cannot reverse out of my driveway. This is dangerous as you find yourself stuck in the middle of the road with oncoming traffic because the car keeps automatically braking every few feet for no reason. The vehicles lane keep assist also will consistently intervene for no reason to the point you are constantly fighting it while driving if it’s on.
The contact owns a 2024 Acura ZDX. The contact stated after his wife had pulled out of the driveway and depressed the brake pedal, the messages "Complete Outer Brake Failure", "Top Speed 43 MPH" and "Stabili-trak Failure" were displayed. Additionally, several unknown warning lights were illuminated. The driver shifted into drive(D) to return into the driveway. The driver depressed the brake pedal, but the vehicle failed to respond. The contact stated that his son who was a passenger was in the vehicle at the time of the failure. The driver shifted to park(P), and the vehicle stopped abruptly. The contact's wife informed the contact of the failure. The contact then test-drove the vehicle and was able to replicate the failure. The contact stated that the warning messages and warning lights were no longer illuminated when the tow truck service arrived to the residence an hour later; however, the braking failure persisted. The vehicle was towed to the dealer, where the failure could not be replicated, and the cause of the failure could not be determined. The manufacturer was notified of the failure, and a case was opened. The manufacturer assigned an emergency technician to diagnose the vehicle. The vehicle was not diagnosed or repaired. The failure mileage was 390.
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