Adaptive Cruise Control Problems of Acura MDX - part 1

Right and left rear stroke sensor and after market connector with pigtails found corrosion nee rear stroke sensor connector causing dtc c1646-f0=== $872. 13 right + $872. 13 left they are using after market parts with this new suspension system for Acuras Mdx type s. Any car wash or rain storm or snow storm this parts gets corrosion!.

See all problems of the 2022 Acura MDX 🔎.

My 2017 Acura Mdx unexpectedly shifts into neutral while I am driving, specifically when slowing down approaching stop signs. When this happens, the vehicle loses power and will not accelerate, creating a dangerous situation in traffic. I have to manually press the drive button to put the vehicle back into gear while still on the road. This has happened multiple times without warning and no recall exists for this issue. This is a serious safety hazard because the vehicle can lose power in traffic or intersections.

See all problems of the 2017 Acura MDX 🔎.

I am reporting a major safety failure on my 2017 Acura Mdx regarding the forward-facing multipurpose camera. Out of nowhere, the camera failed and triggered a cascade of warning lights across my entire dashboard. Because of this hardware defect, all of the critical safety systems—including the collision mitigation braking system (cmbs), lane keeping assist (lkas), and adaptive cruise control—are now completely disabled. Having these emergency systems shut down while driving in traffic is a serious safety hazard. Furthermore, the constant flashing of 5 or 6 different warning lights on the dash is a massive distraction while trying to operate the vehicle. This is a well-documented hardware failure in these models, and it shouldn't be left to the owners to pay thousands of dollars to fix a primary safety component that failed prematurely. This needs to be investigated as a mandatory safety recall before these failures lead to an accident.

Warning lights for collision mitigation system, road departure mitigation, adaptive cruise control. Lane keeping assistance, auto high beam. Features are now disabled causing safety issue. Dealer confirms issues and recommends repairs that have not not been solved by others online. Errors appeared before battery failure in March 2026. Battery was replaced. Common complaint by many online. Need recall to fix.

See all problems of the 2018 Acura MDX 🔎.

Air suspension/vehicle height brake systems were taken away (adaptive cruise, anti collision and lane mitigation) yes confirmed by dealer yes yes warning lights.

See all problems of the 2024 Acura MDX 🔎.

Add auto high beam problem to the above adaptive cruise control, lane keeping assist, and collision mitigation. Suddenly got several warning popups and persistent warning lights on related to the identified issues. We just replaced the battery a few months ago, and didn't have any of these problems until this week. Now, it happens every time we start the vehicle. We did the recall software upgrade. I suspect these problems are related to that software upgrade. Many people online report identical problems without solutions. Please advise re next steps for how to resolve.

See all problems of the 2020 Acura MDX 🔎.

Unknown.

See all problems of the 2019 Acura MDX 🔎.

While driving the car, several warning lights turned on all at once, saying that the following components were disabled: lane keep assist, adaptive cruise control, automatic high beams, and collision mitigation braking system. Not being able to use these features is more dangerous, not to mention that the warning lights associated with their disabling are distracting (making it likely that, if a more serious warning was flashing, it would not be noticed by the driver) and cannot be turned off without an expensive replacement. Yes, the problem was confirmed by a trusted mechanic (the warning lights will not turn off so it's not hard to confirm), who indicated that the radar camera needed to be replaced. No, the component has not been inspected by others. There was no warning of the problem.

Hello, I am writing to report that my 2017 vehicle is experiencing the same issue that was subject to a recall on the 2016 models. Despite the recall being associated with the 2016 year, my 2017 vehicle is showing identical symptoms and concerns. This raises serious questions about safety, reliability, and whether this issue extends beyond the originally recalled model year. I would like this concern formally documented and request a review of my vehicle to determine whether it qualifies for repair, inspection, or coverage related to the prior recall. Please advise on the next steps and whether this issue has been reported or addressed for 2017 models. Vehicle details: year: 2017 I appreciate your prompt attention to this matter and look forward to your response. Sincerely, [xxx] if I get killed me or my [xxx] son, you all will be responsible. You made these faulty vehicles. [xxx] I'm have to get a lawyer involved if issues are not addressed. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Automatic transmission. The car does not go to park when selecting park, it goes into neutral mode. It does not park at all.

I drove my car in the morning and parked it in the lot for about an hour. After I came back and started my car, the following multiple safety systems displayed on my dashboard at the same time: - lane keeping assist problem - collision mitigation system problem - road departure mitigation system problem - auto high beam problem - adaptive cruise control problem when I took it to the dealership on the same day to diagnose this, they came back and said it was an internal failure with the camera and quoted me around $2200 to replace and recalibrate the camera. These lights just came on out of nowhere, I had no repairs or modifications with my windshield and there were no accidents of any sort. This appears to be a widespread problem among 2020 Acura Mdx vehicles with similar camera modules. A malfunctioning front camera can prevent the vehicle from automatically braking or maintaining lanes, hence increasing the risk of collision. I am requesting that NHTSA investigate the front multi-purpose camera system on the 2020 Acura Mdx for potential defect and safety hazard.

While driving my 2020 Acura Mdx with 29,647 miles, all Acurawatch safety systems suddenly failed at once, including collision mitigation braking system (cmbs), lane keeping assist, road departure mitigation, adaptive cruise control, and automatic high beams. Multiple warning messages appeared simultaneously. This disabled forward collision warning, automatic emergency braking, and lane departure/lane keeping functions, creating a serious safety risk. The dealer inspected the vehicle and confirmed an internal failure of the multipurpose front camera/radar unit, and recommended replacement of the entire assembly. The repair estimate is $2,200. The dealer stated the component has failed and cannot be repaired. This issue is widely reported by many Acura owners of similar model years, and appears to be a recurring defect. The failure occurred without any impact, damage, or modification. The vehicle is available for inspection. The symptoms began suddenly and all warnings appeared at the same time. Because this failure disables critical collision-avoidance and lane-keeping systems, it presents a significant risk to the driver and others on the road. I believe this should be investigated as a safety defect.

This has happened twice while on a drive, cruising along on a highway and go to pass a car in another lane, transmission down shifts and then lose all power, transmission repair light comes on as well as emission controls, vehicle is still running but no power to the wheels, trying to get back across three sometimes four lanes to get to the shoulder due to the loss of power, this happened once back in the summer and again today about 96k and now 110k, there are a lot of forums talking about it as well.

See all problems of the 2016 Acura MDX 🔎.

Google on-board gives a persistent error that the mmi and car driving technology firmware cannot be completed. Service center says it’s known and they can’t do anything. The car is supposed to have voice control over vehicle temperature and functionality — it does not. It frequently will not automatically connect to a wireless apple car play or google auto connection. Firmware is also supposed to communicate w car speed, etc. To make Acura assist driving more safe.

Multi purpose camera stops working while in use causing safety features to stop working. Has almost caused a serious accident. Acura is stating it is not an issue they feel obligated to fix.

Warning lights for lkas, acc, lane mitigation, etc come on intermittently and then just disappear next time you start car. Tech advises numerous problems with camera.

Dear Acura, my Mdx is showing many lights on the dashboard (lkas, acc, break system, cmbs, rdm) associates with the code u3000-49 and all those features are deactivated due to the failure mentioned. I was searching on the website for this error and found many Acura Mdx oweners experiencing the same issue which apparently the windshield lane departure camera. Honestly, Acura should take a look into this since this issue is getting worse and those are safety features on the vehicle. Regards,.

The front camera failure. Needs replacement. Camera apparently is used for the acc , lane departure assistance.

The lkas and parking systems will randomly decide to cease functioning and express error messages. The car has not been in an accident.

Monocular windshield camera failed for no apparent reason on five-year-old car with less than 50k miles. Dealer cost to fix $2k. My concern is there are an many individuals on the Acura Mdx forums complaining of the same problem. It appears to be a relatively common but very costly failure on many Honda vehicles that use similar cameras. I believe this is worthy of an investigation, especially since the camera is necessary for many safety related features to function properly.

Constant errors in dash. Cruise control fails while driving. Auto braking no longer works. Warning of other vehicles in blind spots does not work anymore. Many error in dash display regarding the camera and lkas are displayed.

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.

Camera is failing - reportedly due to a bad internal ground-wire. Acura is charging $900 for the part and $1600 for the installation and calibration of a new unit !! also - the unit is a black color, and located right behind the windshield, so bakes itself to death. Acura should be using white colors inside the space, limit the un-used volume, and recalling the units (or at least providing a low-cost unit) to allow simple replacement and improve safety. Such an important and expensive part should not be failing so often. The mxers. Org web site has hundreds of posts about this item. Also - the parts should be pre-calibrated! Acura wants several hundred $$ to calibrate it and 4 days to do it. Nhtsa should not be requiring adas technology if it is so fragile and expensive to fix/replace, as in the long-run owners will not maintain it (e. . G $2,400 repair bills for a small camera part nad 5 minute change). . Read more...

Front camera stopped working at 65 000 miles. Seems to be a faulty part as many hondas and Acuras have the same problem and the dealer wants over $2000 to replace a $700 part that sounds like less than 45 minutes to replace.

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.

This is a safety-related defect involving the multipurpose front camera used for advanced driver-assistance systems (adas) on the 2020 Acura Mdx. The multipurpose front camera failed without warning, resulting in the simultaneous loss of multiple adas safety features, including (but not limited to) lane keeping assist, adaptive cruise control, collision mitigation braking, and road departure mitigation. These features are integral to the vehicle’s active safety systems and driver awareness. The failure required full replacement of the front camera assembly. The total repair cost was approximately $2,300, which I was required to pay out of pocket because no recall or extended warranty coverage was available. This failure creates a significant safety concern because: * the loss of adas functions occurred suddenly and without driver fault. * the driver may rely on these systems for collision avoidance, lane control, and adaptive braking. * the vehicle remains drivable, but with materially degraded safety capabilities compared to its certified design. * there is a risk that drivers may not immediately recognize the loss of functionality or may assume partial systems are still operational. After experiencing this issue, I discovered numerous reports from other Acura Mdx owners describing identical multipurpose front camera failures, often at similar mileage, with similarly high repair costs. This suggests a potential systemic defect rather than isolated wear or misuse. I respectfully request that NHTSA review this issue to determine whether this represents a safety-related defect requiring investigation and possible recall. Given the role this component plays in multiple safety systems, I believe this issue warrants formal evaluation.

The front camera responsible for forward collision warning and lanekeep has failed. The camera has part number 36160-tyr-a02. It failed on it's own but it could have been alot worse if it failed before a collision occurred. The dealer and independent repair shop said it was the camera code u3000-49 and this was an out of pocket repair. The symptoms include having these error messages on the gauge cluster. Adaptive cruise, lane keep assist, road departure, collision mitigation, and auto high beam problem. At first it would intermittently show up but then after a while those errors would not go away.

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.

See all problems of the 2025 Acura MDX 🔎.

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.

While operating the vehicle, multiple driver-assist warning indicators illuminated on the dashboard, including lkas (lane keeping assist system), acc (adaptive cruise control), and cmbs (collision mitigation braking system). The systems either disengaged or functioned erratically during normal driving conditions. At times, the vehicle failed to maintain lane position, abruptly disengaged adaptive cruise control, or displayed collision alerts when no obstruction was present. Now it is constant. Safety impact: the failure of the lkas, acc, and related systems can cause unexpected loss of vehicle assist functions, leading to abrupt speed changes or compromised lane control, increasing the risk of collision if not promptly corrected.

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.

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.