Adaptive Cruise Control Problems of Acura MDX

My 2020 Acura Mdx is throwing up multiple dashboard warnings related to the camera sensor—involving systems like adaptive cruise control, lane keeping assist, collision mitigation, and road departure mitigation. These systems rely heavily on the multipurpose camera unit mounted near the rearview mirror. I took it to my Acura dealership service and they concluded it's the multipurpose camera unit that's causing all these dashboard warnings. They are charging me $1800+ for a new one to be installed. I have researched and googled this issue online, and there were hundreds and hundreds of comments from Honda car owners that have faced this issue, especially Honda and Acura models made in 2019-2020. Many have bought a used camera unit for approx. $150 online and got it installed & calibrated. Others have said that this camera unit is so hot to the touch since it's located under the windshield. I agree with a lot of these Honda/Acura owners that this malfunction of this camera is a safety issue for the car drivers and others around them since these codes just pops out suddenly making the drivers so nervous during driving. Also, these cameras under the windshield get so, so hot that it could also start a combustible hazard. These units should be encased in a heat-tolerant case/cover and not metal.

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Failed component: front camera system controlling adaptive cruise control, lane departure warning, lane keeping assist, and other safety features. Safety risk: loss of these systems increases risk of collision, lane drift, and reduced driver reaction time. Date issue began: August 12, 2025. Confirmation: problem reproduced and confirmed by authorized Acura dealership. Inspections: inspected by Acura dealership only. Symptoms: dashboard alerts immediately after startup stating adaptive cruise control, lane departure warning, and lane keeping assist are unavailable; warnings remain active while driving.

While driving with my small children in the vehicle, my 2022 Acura Mdx suddenly displayed multiple simultaneous system failures without warning and the steering wheel locked and the car slowed and the brakes didn't work well: •brake system problem – warning that braking performance may be reduced •electric power steering problem – “do not drive” warning •vehicle stability assist problem •hill start assist problem •all wheel drive system problem - •adaptive cruise control problem •collision mitigation braking system problem •lane keeping assist system problem •trailer stability assist system problem •brake hold system problem •vehicle stability assist problem •electric power steering system problem •low speed braking control problem •road departure mitigation system problem these failures created a serious risk to my life as well as my children's lives by simultaneously disabling braking, steering assist, stability control, and awd traction. If this had occurred at highway speeds or in a location without space to maneuver, it could have caused a severe crash and even death. The vehicle was towed to the dealer immediately. The tow truck driver stated that he had transported another 2022 Acura Mdx with identical failures earlier the same day, suggesting this may be a widespread defect. The dealer found no recalls and attributed the issue to a steering angle sensor malfunction. Given the severity and the risk of injury or death, I am reporting this to NHTSA. Request: NHTSA investigation into whether this is part of a broader safety defect affecting 2022 Acura Mdx models, and whether a recall or manufacturer corrective action is warranted.

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The car sometimes brakes on its own, and sometimes it brakes more or less than normal. Also, sometimes when I try to turn it on, it struggles to do so.

Malfunction: road mitigation system failed (rdm), lane keeping assist system (lkas) failed, and cruse control failed, after investigating the issue this is happening with multiple vehicles. Safety: yes, these all failed at the same time, poses significant safety issues for the diver, passengers, and other drivers due to nature of failure. Conformation: at this time no inspection of the vehicle has transpired. No other waning lamps or messages, prior to suddenly showing up today 6/18/25.

5 waning lights on : adaptive cruise control , lane departure warning , lane keeping assistance , front light, and the emergency braking . Service crew at Acura dealer told me that the front multipurpose camera has internal error. It is very dangerous since all these functions must be fixed before I can drive it on road.

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I am reporting a failure of the multipurpose front windshield camera in my vehicle, which resulted in the loss of multiple safety systems including lane keeping assist system (lkas), road departure mitigation (rdm), adaptive cruise control (acc), auto high-beam, and collision mitigation braking system (cmbs). These features are critical to safe driving, and their sudden deactivation poses a serious safety risk to both the driver and others on the road. This issue required costly repairs. I believe this represents a safety defect that should be investigated by NHTSA.

Faulty windshield camera. Which fails due to overheating. And sets off problem lights on the dashboard. Lane keep assist , lane departure, brake problem. This seems to be a common problem with this faulty design. To replace this part is $2,000 which who knows if it will fail again. So know one is forced to drive around with the constant problem lights and the uneasy feeling of not having brake assistance when and if needed. This puts not only the driver and passengers lives at risk but the lives of the public.

### 1. **what component or system failed or malfunctioned, and is it available for inspection upon request?** the rearview camera system in my 2020 Acura Mdx has malfunctioned. The camera, which is integral to several safety systems in the vehicle, has failed, causing significant safety concerns. The vehicle is available for inspection by an Acura dealership or independent service center upon request. ### 2. * was your safety or the safety of others put at risk?** the malfunction of the rearview camera directly impacts the **collision mitigation braking system (cmbs)**, **adaptive cruise control (acc)**, and **lane departure warning (ldw)** systems. These systems rely on cameras and sensors to detect obstacles, maintain a safe following distance, and alert the driver when switching lanes. Without the proper function of the rearview camera, these safety systems become unreliable, increasing the risk of head-on collisions, rear-end accidents, or unintended lane changes, which could lead to a serious crash. Furthermore, the area surrounding the malfunctioning camera becomes dangerously hot, posing a burn risk when touched, which adds another safety hazard. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? yes I have taken the vehicle to a dealership for a formal inspection, I have confirmed the issue through the consistent malfunctioning of the camera. The overheating and failure of the camera have been present since the issue began, and I have communicated this to Acura's customer service. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? the vehicle has been inspected by the manufacturer beyond the initial communication with Acura’s customer service. No inspection has been conducted by the police or insurance representatives. However, I have made Acura aware of the problem, and the customer service team, led by account manager monica.

My new Acura Mdx has very soft braking under normal braking and with harder braking the pedal normally is at the same level as the accelerator pedal which I feel could be a safety issue if your foot is then pressing both pedals at the same time. Also, when driving with adaptive cruise activated, when the car starts to brake on its own following another slower car, with my foot resting on the accelerator, the brake petal will activate and sometimes trap my foot between brake and accelerator petals. This is new to Acura as this is my third Mdx since 2014. It has been noted on u-tube videos of the new Mdx's. The dealer says it is not an adjustable brake system. The car can be hard to stop with a heavy load. Nothing I have ever experience before with any car. Thank you, [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I'm not sure if there is a problem with any of the components, but the radar sensor malfunction impacted the vehicle's braking system. Situation: on [xxx], I was driving with my wife and her nephew from my home (ankeny, IA) to indiana on [xxx] [xxx] and [xxx] [xxx] . It was snowing that day. As usual, there were other vehicles on the highway, semi-trucks, pickup trucks, cars. The snow was splashing on to my front bumper, lights, radar sensor and windshield. As it was snowing, I did not engage the cruise control feature. We were around 30 miles from iowa city, I was passing a semi-truck, a message was displayed on the dash to clean the radar sensor. I thought of pulling over in a safe spot to clean it up. At the same time, "front collision off" and "brake system" icon lite up. The road also changed from downhill to uphill. Suddenly, the vehicle started swaying in my lane, towards the semi-truck wheels and towards the guard rails. I was able to control the steering and come to a stop. That was a near death experience. I got my breath for a minute and cleared the radar sensor. After cleaning the radar sensor, the vehicle was driving fine going up and down the rolling hills of iowa. Concern: why a blocked radar sensor should impact the braking system? I understood the impact to adaptive cruise control and front collision features. Are the traction control, abs, or some other system disabled due to malfunction of the radar sensor? can the radar sensor wires being bad disables the braking ability? information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

While at a stoplight, my car notified me of many sensors having "problems" from my understanding, it relates to the front camera located on the windshield. I am unable to use these additional safety features since the problem arose earlier this week. Had this gone out while I was driving, my family and I could have been fatally affected. My cursory research online shows this is a recurring problem that customers need to address independently. All expenses are paid from their own pockets. There were no warnings prior to the system's failure. I have not taken my car in yet for this to be addressed. I am frustrated that this is a known issue with no proactive solution by a brand I had trusted.

While driving the vehicle and while it was in motion, I received a wave of faults. The power steering, lane departure, brake system, brake hold system, vehicle stability assist, hill start assist, trailer stability, and adaptive cruise control all failed. Consequently, the steering wheel locked completely while the car was in motion. I couldn’t steer at all, and the car was in motion! I informed american Honda and the dealer, who informed me that “they had never heard of such a problem”, and that they were “unable to duplicate the issue” when the tow truck brought it into the shop.

Driving when all electronic lights flashed. Rakes steering driver assist lift and towing. Said see dealer reset after I waited at gas station for 30 min power steering worked but was hard to control car.

2019 Acura Mdx a-spec started up the SUV and the following appears on the dash: acc problem collision mitigation problem lake keep assist problem auto high beam problem battery has been replaced and issue still exists. Cruise control does not work at all. "break problem" light remains lit.

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Problems may occur intermittently, including during engine startup and while driving, with warning messages appearing on the dashboard? auto high-beam problem, road departure mitigation sysem problem,, collsion mitigation system problem, lane keeping assist problem and adaptive cruise control problem. All of advanced driver assistance systems can't be used.

The manufacturer has not solved in a timely matter the open recall since November 2023.

There are warning lights for all safety modules, the lkas, headlight warning system accident prevention system, collision avoidance system etc. .

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While driving on a local road (not highway), engine began to make a very loud sound. Sounds like metal on metal inside engine. Called local Acura dealer and they said that the connecting rod recall/problem that was announced in November 2023 "does not apply to my VIN".

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I have a 2017 Acura Mdx that had around 98k while I was driving down the highway at 65 mph all lights came on the dash and lost acceleration would not go over 45 mph on a very busy highway. Had to have the vehicle towed per dealership- towed to jay wolfe Acura, overland park, KS. They said engine needed to be replaced due to the miss fire of rod knocking. There was no other option for replacing the rods had to replace the engine. In addition they replaced with an used engine that is a 2016 not even the same year. Dealer made us aware of the recall for this issue but advised us the VIN# is not under the recall so we had to pay out of pocket. I have tried to work with Honda and the dealership for reimbursement since there have been numerous vehicles with this exact issue but the VIN#'s not under the recall but with no help at all. I have provided documentation and explained the issues and the repairs. I have documentation but was not able to add it to the document listing below.

On 8/20/23 heading south on I-294 in chicago : in center lane with cruise control on and no cars close in front of me when the car suddenly started a hard braking without warning. No orange warning to brake came on but engine warning light of left of dashboard was on. Immediately turned off cruise control. Car would not accelerate and came to a stop on the highway. Tried to start without success, then restarted and the car came on but in neutral. It had been placed in park before shutting off. Car started and drove uneventfully back to indianapolis. Took to Acura dealer and diagnostics were run showing that "position range" switch or sensor had been activated. Told it was safe to drive. We do not agree and are selling the car. Dealer, or service dept was very lackadaisical about the incident. I will contact Acura corporate headquarters as well.

My car was purchased with 12,000 miles and supposedly worn tires. Because of that, I went to the dealership to get new tires and an alignment since the car was always pulling to the right. My car has been at the dealership four times for the same problem, and they still haven't fixed it. My car continues to constantly pull to the right, and when I use the cruise control, it stays above the other cars to the right, causing it to suddenly pull to the left, deactivating the speed control and losing control. The dealership's recommendation is to stop using the speed control. ".

I had the transmission system failure error came on the dash and the car wouldn’t drive to d or reverse then blind spot and adaptive cruise control error propped up.

My vehicle has similar behaviors to the most recent investigation that is happening with the investigation of the Honda accord and crv noted in this article: https://static. Nhtsa. Gov/odi/inv/2022/inoa-pe22003-5540. Pdf. On a handful of times while driving on the freeway, my car has unexpectedly decelerated when passing another vehicle, or on a curve the adaptive cruise control slows the vehicle down. On one occasion, the car suddenly applied the brakes and slowed us down at least 10mph. In any of these instances, I have not had anyone following, but could have caused issues if there was.

I was driving on a 80-mph 3-lane one direction (6 both) toll road, following a TX state trooper. About a 1/4 mile ahead of me were two waste disposal trucks. One in the right land and one passing the other in the center lane. The trooper and I pulled into the left lane. As we approached the waste disposal trucks (about 1/8 mile away) my brakes automatically engaged and braked hard for no reason. I tried to override it by depressing the accelerator but the accelerator did not respond (as though it had been disengaged). Behind me was a mercedes SUV, which had to brake hard to avoid rear ending me. My brakes kept automatically braking (off and on). I finally pulled off the road on the left shoulder and brought the car to a complete stop. It then allowed me to proceed on my way. I bought the car in part for this safety feature, but it clearly is faulty. In reading about braking system, I found that older models had a button that you could use to turn the system off. In my 2022 model, you can turn it off only with multiple steps. You can also adjust the responsiveness of the auto-brake system through a multiple step process. Clearly, this is a major problem that needs to be addressed. I was very lucky that the car behind me braked immediately or it would have rear-ended me at high speed. It was about 5:30 p. M. It was getting dark but not completely dark. I think the problem is with the automatic braking system for forward crash avoidance, but my adaptive cruise control was engaged.

Driving east on interstate 20/59 10 miles east of meridian, ms November 17, 2021 around 2:00 pm. A lot of trucks on the road. Had speed control set at 69 mph. Came up behind a semi doing about 65, pulled over to the left lane to go around him. When I got about half way all of a sudden all hell breaks loose. Vehicle goes in into emergency stop with lights flashing all over the dash. Vehicle brakes to around 30 mph within a couple of hundred feet with semi's and cars beside and behind me. Finally got the vehicle over to the side of the rode without and accident. (a miracle inself). Code dtc p0716. After about an hour of shutdown, started engine and all messages were gone. Took it to the Acura dealer and they, evidently, updated the tcm software. I had not been notified that it needed and update which is negligence on Acura. This incidence could have been a catastrophe with possible deaths. Now my wife is really afraid to drive this vehicle.

On multiple occasions (6 times within a week) the powertrain loses power. While traveling 60 mph in 4 lane interstate traffic engine loses all power and accelerator ceases to respond. Passengers were at risk due to no power. Acura dealer has not been able reproduce. Some dealers have affirmed that they've had customers with the issue but can't reproduce. The issue seems to occur more frequently after cruise control has been dis-engaged. I have spoken with another a 2018 Acura owner directly and they have experienced the same issue. It does seem the engine/powertrain resolves when the transmission is switched from "normal" to "sport" mode. The amount of time with loss of power seems to span about 5-10 seconds.

While driving with adaptive cruse control on, I was approaching slower vehicle. I wanted to go around it without breaking. While driving already on high speed (70m/h) I press acceleration pedal so I can safely go around slower vehicle. I was half way into passing line (last left line), there was a car already behind me approaching with higher speed, when I suddenly completely lost power and lots of lights illuminated on the dash. Car behind me notice that I start loosing speed rapidly so he start braking that I could hear his tires. I didnt know what to do so I just kept going to emergency stopping line where I almost crash into the concrete divider. I manage to stop vehicle safely by pure luck. After stopping I notice that car is not shifting, and sh-awd system, blind spot ass, emission system and transmission system fault lights came on. I called insurance agent to send road side assistance, but while waiting on the call I start the car again (like 15min after this incident) and all lights were still on except transmission. I tried car and it was shifting normally now, except sh-awd was not working (I didnt have power to the rear differential). This could be very tragic event if both me and the driver behind me didnt react properly. I had two more passengers in the car, from which one was 15 months old child. I was reading that this could be transmission system update issue, but my dealer did update transmission already.

While driving at highway speeds with the adaptive cruise control engaged, the vehicle detects vehicles to the right (same direction of travel) or at times vehicles to the left (opposite direction of travel) and abruptly applied backing. No vehicles will actually be in lane of travel of the vehicle to cause action. On a 87 mile drive (one way to work) happens more than eight times on first drive and over ten time on second drive. Vehicle has under 1500 miles on it and was purchased brand new. Taken to Acura and told to turn off lane departure system unless in city traffic. System turned off and did not correct issue. The abrupt braking causes drivers behind to abruptly brake, increasing risk of crash, and also angers them because they think you are �brake checking� them. Weather was cloudy or clear.

Cruise control set to 37 mph, vehicle accelerates to almost 50 mph on downhill without braking.