Service Brakes Problems of Acura MDX - part 1

Loss of power steering and braking assist reduced. My spouse was driving our 2023 Mdx approximately 45mph when she ran over a recessed manhole cover which created a bump. The Mdx lossed power steering and brake performance reduced. The vehicle was very difficult to turn at that point. The car began to cycle through errors that would not clear until the car's engine could be stopped and restarted: hill start assist problem, trailer stability assist problem, adaptive cruise control problem, lane keeping assist problem, collision mitigation braking system problem, road departure mitigation system problem, low speed braking system problem, electrical power steering system problem steering assist is not available do not drive, awd system problem front wheels may only be powered, brake system problem brake performance may be reduced. All these errors said see your dealer. We took the vehicle in to our local Acura dealer's service department 2 times over the course of 3 days. Both times diagnostics were ran and the car was deemed without problem. The Mdx's alignment was ok as well, so the impact of the road hazard was not severe.

See all problems of the 2023 Acura MDX 🔎.

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.

See all problems of the 2022 Acura MDX 🔎.

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.

See all problems of the 2020 Acura MDX 🔎.

I was driving on the road and an electronic parking error light came up, along with emissions error. I pulled over to the side and I could not start the vehicle and the gears won’t shift.

See all problems of the 2017 Acura MDX 🔎.

On [xxx], I was trying to park under the shade of a tree when the vehicle suddenly surged forward, ran through the back of a big concrete dumpster retaining wall, pushed the dumpster at least 3 to 4 feet forward. It all happened so fast, I was left puzzled about why the brake failed and caused the accident and property damage. Luckily there was no personal injury to me nor anyone else, my car video showed that I narrowly missed 2 hispanic young men standing near the dumpster ! since the car is still under warranty, my plan was to get the car checked out by the dealership mechanic after the body shop finished with the $18,000 repair job. Then on 7/31/2025 I received a recall notice from Honda about brake pedal pivot pin may not have been staked during production. I immediately contacted state farm and Honda. On 8/6/2025 a Honda representative, mr. Noah, called and advised to have the car inspected by dealer for recall issue. I did not agree to it due to what I believed to be a conflict of interest : since the dealer is part of the same network with Honda ! noah then suggested to get state farm to request an edr download of specific data providing insights into what happened before , during and after a collision. Or I can order one myself. In accident cases involving vehicle recall, the manufacturer is considered a key party when it comes to investigation, why we consumer need to foot the bill knowing that ordering edr is not assigned to a single party! it has been more than 3 months now since the accident, and my car is still sitting at the auto shop waiting for an edr its data might have already been overwritten !! I have never heard from Honda again after 8/6/2025 !! they just ignored my phone calls, emails, accident video and photos totally. There were no warning lamps, message or other symptoms of the problem prior to the failure. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2024 Acura MDX 🔎.

1. Brake pedal sinking to floor while stopped - while stopped at a traffic light or in stop-and-go traffic, the brake pedal intermittently sinks all the way to the floor despite steady pressure being applied. This issue occurs sporadically, making it difficult for the dealership to consistently replicate during service visits, but it has happened multiple times. Critically, once the pedal sinks, it does not return to its normal position on its own. I am forced to manually pull it back using my foot, which is both dangerous and unacceptable in a modern vehicle. This creates a serious safety hazard and raises concerns about potential failure of the braking system. 2. Delayed brake engagement - the brake pedal consistently travels halfway before the braking system engages and slows the vehicle. On all three occasions, I was told the problem could not be replicated. Despite their findings, the issue persists and poses a serious safety concern, especially in real-world driving conditions. This concern is even more urgent because I regularly transport my family, including my two toddlers aged [xxx] and [xxx] , and I need to be able to rely on the braking system to keep them safe. I have reached out to Acura on numerous occasions to report this issue, but so far, my concerns have not been taken seriously. I have not received any meaningful support or escalation despite clearly communicating the severity of the problem. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

My vehicle will phantom brake and kick on the automatic emergency brake system without cause. It has done it as I was accelerating onto the freeway onramp and almost caused a collision with the vehicle behind me. There was nothing in front of me and no reason to brake. It has happened on several occasions.

I was pulling into a friend’s driveway. I had my foot on the brake was barely creeping forward. Without any yellow warning, the car slammed on the brakes for me. It hit the brakes so hard, I had smoke coming out of my front, middle vents and when I got out of the car, it smelled very bad and I had smoke coming from my brakes. There was nothing in front of me. The same incident also happened to my husbands few days earlier while he was pulling into our garage.

There is an active recall on the brake calipers and fuel pump for Acura Mdx 2017, and hondas. My Acura Mdx 2017 has the same issues with a code of p07e4, which is the brake calipers. When looking up the recall of my car, there is no recall on it when inserting the VIN. My car is an Acura Mdx 2017; I do not understand why it is not included in the recall when it should.

1. 17. 25 my check engine light came on with the following lights: emissions system problem electric parking brake problem.

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).

The contact owned a 2019 Acura Mdx. The contact stated that while driving approximately 40 mph, the vehicle experienced a sudden jolt. The contact immediately depressed the brake pedal and the vehicle erroneously accelerated to a high rate of speed. The contact depressed the brake pedal, shifted to neutral, and to the park position but the vehicle continued to increase speed eventually crashing into several vehicles that were stopped at a red light. The vehicle then crashed into a moving vehicle where it came to a stop. The contact indicated that during the incident four vehicles were crashed into and the vehicle's collision avoidance system did not activate as intended. The contact sustained an injured back which later required medical treatment. A second motorist sustained an undisclosed eye injury. No further information was available. A police report was taken at the scene and the vehicle was towed to the home. The cause of the failure was not yet determined. The vehicle was a total loss. The manufacturer and local dealer were not yet contacted. The failure mileage was 22,229.

See all problems of the 2019 Acura MDX 🔎.

Brake system warning light comes on and says reduced braking take to dealer. Auto hold brakes don't always hold. Rear brakes non stop squeal and grab un predictably. I am unsure when and if the brakes will work in the rear. The loud noise from the rear squeal has caused others in traffic to flag me down and warn me something is wrong. The noise is also made it impossible to have my autistic nephew in the vehicle with me as it triggers episodes and scares him. I have asked the dealer to please repair the rear brakes several times. They refused and instead replaced the front brakes, then admitted it is the rear brakes but refused to repair them. Honda of America also refuses to repair rear brakes. Based upon false statements on the work order the statement from the dealer is the rear brakes on the Mdx are supposed to be like this. This vehicle has issues with the warning light while stopped and moving, and the noise and unsafe braking is at all speeding from 1-60 mph. Forward and reverse is malfunctions. I asked Honda America to repair which they won't then I ask them is the official statement these brakes are okay and safe as is and they will not say that either. I have driven similar models of this vehicle and it does not do the same thing, no noise, or warning lights, and the brakes preform safely and consistently. Mine do not. Honda of America does not want to repair the brakes under the warranty. They also incorrectly stated on repair statement that humidity and car washes can make the brakes do this. I have been in northern non humid states during winter and never use a car wash. They just use this as an attempt to not repair the brakes.

Vehicle has had 3 instances of a feeling of locking/ seizing and shutter or hesitation during braking at 40 to 65 mph. Service light appear about brake system which quickly vanishes in less than few seconds same as feeling of the brake seizing also disappears within few seconds. This occurred from initial purchase to date at 21k miles. Vehicle brake system inspected at this service junction 2 years after purchase and at this service at 21k one single brake pad and rotor has worn on right front brake pad to 3mm. Front right brake rotor also deemed damaged and require changing. Other 3 brakes pads and rotors meaning left front brake pad and rotor and 2 rear brake pads and rotors are in good condition at 8mm. The dealership has issued a finding from their independent warranty inspection people who refute that the brake caliper as deemed as cause of this issue in past cases have now instructed the dealerships to not change caliper but just change the brake and rotor affected and to do this at the vehicle owner's expense nonetheless. So the vehicle has has other identified issues with uneven brake wear of the model 2022 Mdx type s. The manufacturer is not acting in good faith to provide safe and reasonable means of addressing this issue. This issue is clearly happening to this particular Mdx and now Acura does not want to find the problem and correct it. My brake has worn to 3mm and yet it is not considered a "defective" part that must be at fault? there needs to be an identification of what can be causing this as brakes are one of the major safety components for a vehicle. Acura needs to find out the cause and stop passing the responsibility of correcting an obvious defect onto the consumer with a bandaid. Changing the rotor and brake pad is not the way. The root defect needs to be addressed especially since there is obviously multiple people with same issue with this make and model 2022.

My vehicle has a battery issue, we replaced the battery twice in two years still the issue might happened again and again. Once the battery start draining energy, everything start blinking and car stops all of a sudden in the middle of the road because of brake assistance problem. All the system errors come up. It is very scary to drive the vehicle with my kids inside. All system in car works with battery. Service center told me that this kind of cars needs bigger battery and company only put small batteries in the car. Company don’t put warranty on battery if it is replaced under car warranty. My car is only 33 months old and I have to change battery twice, it might happen again. Please help me to resolve the problem. It looks like factory problem that company do not make sufficient batteries to satisfy the vehicle needs. I have attached the pictures of safety lights.

On more than several occasions the car has slammed on the breaks for no apparent reason. This has happened multiple times and thr dealer can’t fix the issue because the computer is showing no error. This is a serious concern for me as the last time it occurred a child hit her face on the back of the passenger seat causing her lip to bleed.

I was lightly stepped on the gas coming off a complete stop with no cars in front of me. The automatic breaking came on hard and a sensor flashed to brake as if I was going to hit someone but there was nobody in front of me. The sensor alert system was turned off 15min prior as I had gone through a car wash. This is the first time this has happened but unknown why. Had there been a car behind me, I may have been hit.

Brakes and rotors began squeaking in all environments. Brakes began to warm and steering wheel would excessively shake. Brakes replaced at 8k miles. Brakes are now beginning to squeak at 12k miles. Brakes are out of warranty at this time.

While driving on a major highway, several warning lights, including the brake warning, appeared on the dashboard. Simultaneously, the vehicle lost power steering, making it extremely difficult to steer and creating a hazardous situation for the driver and others on the road. The driver managed to pull over and turn off the vehicle. Upon restarting, the warning lights were gone, and the steering returned to normal. The car was taken to a local Acura dealership, but they couldn’t find any error codes or replicate the issue. After a week of driving without any problems, the car was brought back to the dealership. This time, a district Acura technician recommended replacing the steering rack. The dealership informed us that Acura would disassemble the old steering rack to investigate the issue further and determine if it was the cause. Acura will decide on a recall if enough vehicles are affected.

The contact owns a 2022 Acura Mdx. The contact stated that on two separate occasions while driving at various speeds, the brake warning light illuminated. Additionally, while driving at various speeds on the two occasions, the vehicle experienced phantom braking. The vehicle was taken to a dealer where it was diagnosed that a software update for the side air bag sensors was needed. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 41,000.

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

While driving the car started to loose momentum and began stuttering until finally stopping abruptly and applying the electronic braking system. All warning alarms were illuminated on the dash. I was not even able to pull over completely off the road either putting me and my family in danger from not being off the road. Acura dealership service center informed me it was a bad high pressure fuel pump located on the engine block itself. There are recalls for this exact part neginnibg from 2018 on the Acura Mdx model. My model is a 2017 making me wonder if the recall should include earlier year models of Acura Mdx.

Abs vsa malfunction light comes up constantly and car rattles when brakes are used. It’s constantly turned on even with good road conditions. There are millions of customer complaints on the web about this issue and I believe this should be logged as a major issue which should be logged a recall and offered as a fix to customers who have these car models and issues. My daughter was driving the car and experienced issues on freeway when braking. The car slipped to the side when brakes were pushed and the whole car was shaking and unstable.

See all problems of the 2014 Acura MDX 🔎.

Auto braking system engaged abruptly, without necessity. This occurred twice (December 2022 and November 2023) almost causing collisions on both occasions. The dealer could not reproduce the problem when it was brought in in December 2022 and said this could occur if the sensors are dirty and to ensure they are always clean. I have since done so, and the same thing happened again. There were no warning signs for this error prior to it occuring.

I bought the car in March 2023 and took the car for maintenance of 5k at Acura dealership at north orlando and after that the car came never the same. The car is making so much noise skewing and clicking noise every time you turn the streering wheel. The dealership said the noise is from nuts and bolt and they did change it and noise became more loud 2nd time they said it is the front break and they did change it and the noise still the same and more of clicking noise with every tire turns . I do have a video but I could not upload it. Then for 3rd time and car been sitting at dealership for a month now they said this noise is normal and happens with all Acura Mdx models. The loaner I have is an Mdx that never makes any noise . The car was running perfectly fine before the maintenance. Now noise and steering wheel ?? very loose and does not feel the same as before and you can hear 2 different noises in car one with breaks on and one with car or park and just turing the steering wheels. So unbelievable that the damaged my car and I barely have mileage on it and changing all of those parts and when they came to a point that they can’t solve the issue they are saying it is a normal noise. Is it in car manual ? why you changed all those parts to start with if that car and noise were normal? too many questions and hidden parts for the dealership and Acura manufacture they just know half of the story and only listen to dealerships. I don’t feel safe driving the car with all of those issues and having two kids with me all the time.

Driving in rain and multiple systems failed at once without any reason. Car indicates brake systems, lane assistance, power steering, collision mitigation, stability control, etc all indicate problems. No reason for it to all go out at once.

The collision mitigation braking engages independently with no objects in front of vehicle. I was going through a green light with no car in front of me. The car momentarily started to brake on its own.

While braking into a parking spot, vehicle experienced sudden unintended acceleration. Brake did not engage, car rapidly surged forward over parking block, sidewalk and hitting building. Previously in day, car would not recognized key fob, would not unlock and would not start even though stepping on brake that would not depress. I had no control over vehicle,and this could have hit pedestrians on sidewalk or storefront. Thankfully no one hurt, and did not occur in traffic or on the road. The dealership was contacted immediately, and they declined to inspect vehicle, codes or edr statign that's not what they do. I have asked dealership 3 times. Insurance contacted immediately, and they to will not investigate, saying up to Honda and dealership. Honda stating they don't do investigations, and insurance should do that. Round and round we go. No one assisting. Auto body referred by dealership unable to investigate and do not have equipment to do so and stating dealership and Honda tech needs to do this investigation. Several messages displayed the day of incident prior to incident and electrical issues seem to have started immediately after recall or warranty work to reprogram auto stop function. First instance of electrical issue was on 4/1, when car would not open, or unlock even with new battery in key fob. This continued over next 3 weeks sporadically. 4/24 car would not start, displaying "must press down brake" to start, but brake would not depress. Finally worked. Same thing 4/25 in morning. In evening car would not unlock for some time, finally opened, then would not start displaying "key fob not detected". Finally started. Message remained displayed. 15 min ,after, when parking, car accelerated forward without warning. This is a short summary, and a detailed summary is available. Vehicle remains untouched at autonomy hoping to get investigation completed. Too scared to drive this vehicle now. .

The contact owns a 2022 Acura Mdx. The contact stated that while her husband was reversing from the driveway, the transmission was being shifted from reverse (r) into drive (d), the brake pedal was depressed; however, the vehicle failed to stop. The vehicle crashed into the neighbor's residence and landed in their yard. The contact's husband was injured and received medical attention. A police report was filed. The vehicle was towed to a tow yard and was deemed totaled by the insurance company. The manufacturer was made aware of the failure. The failure mileage was 17,956.

I brought my car in for regular maintenance as well as sunroof not opening plus I noticed on and off when I start the car my steering wheel vibrates, only when starting the car. Following day I received a phone call that the motor needed to be changed for the sunroof and they also need to change my brakes (car has ~8k miles on it)… and not just brake pads, rotors as well. My front passenger side brakes were basically none existent, no idea for how long and I was told it’s a manufacturers defect which was covered by warranty. I have a 4 year old and currently 5 months pregnant, needless to say I feel extremely unsafe now driving my not so cheap car.

All electrical systems failed while driving around 30mph, power steering failed, power brakes failed, lane assist failed. We were at high risk of a crash due to lack of control of the car while driving. We were lucky that it happened on a flat road and we were able to manually pull over to the side of the road. The vehicle was inspected by the manufacturer and we were told that the car did show all the steering angle sensors did malfunction and fail. They said there is no known cause. They just recalibrated and reset the sensor and said it now is ok "at this time. " there is no guarantee that the problem won’t happen again and put my family’s life in danger. Prior to this incident we repeatedly got the "brake system: brake system problem, brake performance may be reduced, see your dealer". We took it into the deal and was told nothing is wrong with the car and this is a known issue. Dealership service video: https://app. Truvideo. Com/v/cbrsghvo?s=46jtvtj1afxkzdwwq3ge7pdbzv4dldl0.

The contact owns a 2006 Acura Mdx. The contact stated while driving 40 mph, the brake pedal was depressed and became stiff. In addition, the vehicle stalled, and the brake lights failed to illuminate. The contact stated that the instrument panel warning lights illuminate on and off. The gear stick would not shift gear as needed. In addition, the vehicle stability assist (vsa) warning light was the only warning light that remained illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 281,800.

See all problems of the 2006 Acura MDX 🔎.

On two separate occasions (December 2022 and April 2023), the collision mitigation system (cms) of our 2020 Acura Mdx improperly engaged. On the first occasion, the cms abruptly engaged the braking system without warning. There was no car in front of the car, but there was a car in a turn lane to the right of the car. There was no reason for the system to engage. Both the driver (my wife) and the passenger (daughter) reported back pain from the incident. The driver received physical therapy for the event. The dealer (gary force Acura) and Honda America were notified. The dealer examined the car and found no issues or failures. On the second occasion, the car was changing lanes at a slow rate of speed while approaching an intersection and a stopped car well in front of the Acura. The cms again abruptly slammed on the brakes in a manner not corresponding with the risk or danger of the situation. A collision with the car behind our car was fortunately avoided by the driver of the other car. The violence of the braking system caused damage to the braking system. No injuries were incurred. Again, the dealer and Honda America were notified, and the car was again examined. No issues or failures were identified outside of the brake repair. On both occasions, individuals were put at risk. The dealer was not able to reproduce the problem. The dealer said a cms warning to brake should have come on before the cms engaged. On both occasions, no warnings were observed until the actual braking event started. We are not comfortable driving the car, particularly with a student driver in the family. In most cases, we turn the cms off before driving the car. The intent is to dispose of the car due to concern associated with the cms.

The contact owns a 2023 Acura Mdx. The contact stated that while driving at various speeds, the brake pedal was spongy whenever depressed. The contact stated that the brake pedal would depress to the floorboard. There was no warning light illuminated. Due to the failure, the contact had the vehicle towed to the dealer on three separate occasions. The brake reservoir and brake reservoir cap were replaced under warranty; however, the failure persisted. The manufacturer was notified of the failure and the contact was given a case number. The vehicle was not repaired. The failure mileage was approximately 3,000.