Electrical System Problems of Acura MDX - part 1

Car engine turns off at a red light, by turn off I mean completely turned off, not just silent. And takes a couple of attempts to restart the car before the engine turns on again. This has happened over 5 or 6 times over the last 3 months, however yesterday (may 9, 2026) it happened twice within the hour. Luckily, I have not been involved in an accident because of this, but I'm concerned that it's easy to imagine a scenario where someone will be rear-ended. Please issue a safety recall for Acura to fix this issue.

See all problems of the 2025 Acura MDX 🔎.

While driving on the interstate over 2 hours from home the car put itself into neutral and almost caused us to get into a collision. While accelerating after a construction zone, the lights on the dash of the vehicle lit up with transmission, emissions, electronic parking brake, and more codes. The car shifted itself into neutral while running between 65-70 mph on the interstate. Multiple vehicles were accelerating after the 55 mph work zone area was over, and we had to swerve between cars to get to the shoulder of the road because the vehicle lost all acceleration capabilities. We have taken the vehicle to the dealer for past recalls and software updates and mentioned this issue happening before and were told that the vehicle showed no codes concerning the electronic parking brake issue. Upon further investigation, there are multiple reports and forums of this particular vehicle having the same issue. Its a miracle we didn't get involved in a massive collision with semi trucks and other vehicles amongst us when the vehicle lost all ability to accelerate. This could cause a huge problem if it were to happen again in a more populated area or at increased speeds. We were stuck on the side of the road for 4 hours waiting on a flatbed to tow it because it locks up the awd system with the electronic parking brake and doesn't allow the wheels to move. This is the second time we've had it towed for this same issue only to be told that it's not a problem. I'm willing to bet that the company knows exactly what the issue is but won't issue a recall because they don't classify it as a safety recall until people start losing their lives or cost the company stockholders money. This problem has the ability to cause major harm or death to people with this vehicle if it were to shift itself into neutral or lock up the electronic parking brake while in a heavy populated area. I hope they issue a safety recall and hold the company accountable before people lose their life.

See all problems of the 2017 Acura MDX 🔎.

Last year, my 2025 Acura Mdx was repaired under warranty for a known starter issue that is affecting all 2025+ Mdx models. The issue is that the vehicle will stall or fail to start on random occasions leaving drivers stranded or stopped in traffic unable to move their vehicle. Honda and Acura are well aware of the fact that this is an issue, yet they continue to produce these vehicles with the same parts. This repair took several attempts and the dealership refused to even diagnose the issue for several months causing me to have to record each instance on my phone for proof. Once they eventually replaced the starter, the issue went away for approximately 10 months. Today, however, I was temporarily left stranded at a gas pump as my vehicle would not start. Honda and Acura dealerships are replacing these parts with the exact same part number, so the no-start condition comes back in about a year or less. It is incredibly dangerous to have a vehicle that you cannot move as anticipated, or if you’re in an area that you cannot leave or get away from potential danger because your vehicle won’t start. This is a less-than two-year-old vehicle that has now left me stranded on several occasions including in the middle of traffic on a motorway. I know for a fact that several other owners of the Acura Mdx are having the exact same issue and ask that you please launch an investigation into this as Honda is well aware of it and still refuses to address the blatant safety risk it poses to its customers.

While stopped at a traffic light, the vehicle had auto shut off normally. However when I released the brake and pushed the gas it unexpectedly stalled and shut off without warning. When attempting to restart the vehicle, it would not start again. There were no prior warning indicators or messages suggesting an imminent issue. This created a hazardous situation as the vehicle was disabled in an active traffic lane. After several attempts, the vehicle either restarted after having set the emergency brake. The failure appears to be sudden and without driver input, raising concerns about reliability and safety in traffic conditions.

Vehicle is equipped with start stop system and we have had multiple instances where we come to a stop , and the car will not restart. In the latest instance, we pulled up to stoplight, the start stops system engaged shutting off the engine then wouldn't restart. Car also wouldn't turn completely off, so I had to hit the flashers at the busy intersection, try to get the car into park, then shut completely down, then restart the car. It also struggled to restart as if the battery was dying. In this instance most dash lights come on, but it appears to be an engine, electrical, and software issue. The vehicle has been inspected by the dealer multiple times, and in once instance they said the issue was caused by a bad battery, mind you the car is slightly over a year old. This latest time, they claimed that the battery was good and no issues were found. This issue continues to put me and my family at risk by leaving us disabled in the middle of traffic especially when it has happened near exiting the freeway,.

Engine stalls when at intersection and the engine cuts off at idle and fails to start back up when you remove your foot from the break. Can have keep lane assist enable. Klas mode narrow, you have to fight the wheel to maintain control of the vehicle, formal mode is a 50/50 chance it works, wide you can sift right off the road for 5-10 secs before to realize your off the road. Steer wheel control button intermittently fail and stop being able to control the midi instrument panel and infotainment system. I believe there is a systematic electrical issue in the car. They attempted to fix this by replacing a starter which hasn’t because the engine stalled at an intersection again and on cold start this morning 5/4 at the same intersection as this is by my girlfriends apartment.

We have had multiple incidents when the car is at a stop light with the idle stop not active, the vehicle engine will just die. The light turns green and the vehicle is not running, it will take multiple times pushing the start button for it to start back up. This has resulted in multiple almost rear end incidents due to other drivers assuming we would go when light turned green. More recently this weekend on a trip from columbus OH to st. Louis mo; stopped to get gas east of indianapolis, after pumping gas the vehicle would not restart. It took multiple tries to get it to restart; this happened again the following day at a stop during the day at a shopping center, we ran in to get subs for lunch, came back out, would not start, I have a video of the sound and flashing lights but I can't upload a video here.

Emissions system failure warning power shifting / power shifting see dealer all wheel drive (awd) power may be reduced - see dealer.

See all problems of the 2022 Acura MDX 🔎.

Our infotainment system stopped working and when we took it one of Acura’s authorized dealers they told us that back half of the car is flooded and that has shot down all the electronics including the infotainment system. They also gave me a bill of $10k usd to fix the leak and replaced damaged electronics. Their argument is that the car was parked outside and that caused this issue. This has never come up in any of our previous maintenance visits where Acura certified dealerships always check our car and tell us that everything is okay.

See all problems of the 2024 Acura MDX 🔎.

Stopped for a red light at a busy intersection with the auto start/stop feature turned on. After releasing the brake pedal to begin driving after the light turned green, the vehicle attempted to start the engine, but struggled and in doing so, the vehicle stalled out. After two or three attempts of placing the foot onto the brake and pressing the start ignition button, the vehicle finally started and we were able to drive away.

—the floor harness has failed due to poor design & location of the harness as it creates a trap for moisture. —yes, this component is available for inspection upon request. —the safety of myself was in moderate jeopardy due to the air struts malfunctioning. —yes, the problem has been reproduced by a dealer. —to my knowledge, the vehicle or component has not been inspected by the manufacturer, police, insurance representative or others. —yes, there were warning lamps & error messages appearing on the daahboard. These error messages & warning lamps would appear anywhere from 15-30 minutes after vehicle was in motion.

My car has stalled while driving on the highway multiple times now. The first time it happened, it lost power, stopped accelerating, and cycled through multiple warning lights, causing a significant safety risk. I pulled over and it restarted within minutes. I took it to a repair shop and they could not find a problem with it, even with the codes provided. Nothing pointed to a solution. It happened two other times while I was driving my child on a highway where it lost acceleration and then kicked back in. Again, this post, a significant safety risk as always in a fast lane on a highway with my child cars behind me had to hit their brakes to avoid me after this incident. Other times it doesn’t lose power, yet it cycles through warning lights randomly. I took it to the dealer instead of a local shop. They texted me about items that should be fixed per an inspection, including struts and a battery replacement. Complete with a large bill just for diagnostics. Yet, nothing was found having to do with the main problem at hand. Losing power while driving. . My battery is less than six months old. I had it tested and it is fine. My VIN is not listed in the recall, but, all of the symptoms match the other recalls of the same year make and model.

See all problems of the 2019 Acura MDX 🔎.

The contact owns a 2025 Acura Mdx. The contact stated that while driving approximately 30 mph, the vehicle bucked for approximately 3-seconds before the vehicle stalled. The hazards were activated, the vehicle was turned off, and the contact waited before restarting the vehicle. While restarting the vehicle, several warning lights quickly flashed, and the vehicle failed to exceed 4 mph while driving to the nearest parking lot. The vehicle was towed to the dealer, but was not diagnosed. The vehicle was not repaired. The contact became aware of NHTSA campaign number: 25v031000 (fuel system, gasoline, electrical system); however, the VIN was not included. The manufacturer was not made aware of the failure. The failure mileage was approximately 24,000. The VIN was not available.

Car stalls at idle. Auto idle does not allow engine to restart from stop. Creating dangerous situations when on highway traffic, traveling around town and more. 2025 Mdx, 21,000 miles Nov 2025 at 14,500 miles reported issue after experiencing intermittently for a few months. Filters replaced, software updated Dec 2025 issue still occurring battery replaced March 2026 issue still occurring starter being replaced technician at dealership did not seem confident that replacing the starter will remedy this issue.

I am filing a complaint regarding my 2022 Acura Mdx type s with approximately 70,700 miles. The vehicle developed a suspension system warning, and upon inspection by an Acura dealership, I was informed that the suspension stroke sensor and floor wiring harness are corroded and require replacement. I was quoted approximately $12,000 for the repair. This failure is extremely concerning because the vehicle is only a few years old and this type of corrosion affecting a major wiring harness should not occur under normal operating conditions. The affected components are part of the suspension system, which directly impacts vehicle handling and safety. Due to the failure, the suspension system may not function properly, potentially affecting ride height, stability, and overall control of the vehicle. This raises safety concerns, especially at highway speeds or during emergency maneuvers. There was no prior warning of water intrusion or external damage that would reasonably explain this level of corrosion. This appears to be a premature failure of a critical electrical component. Acura has only offered minimal goodwill assistance, leaving the majority of this extremely costly repair as the responsibility of the owner. I am concerned that this may be a broader issue affecting other vehicles and that it could pose a safety risk if not addressed. I am requesting that this issue be investigated. Thank you.

The auto idle stop feature will kick in at red lights, shutting the engine down. However, every approximate 1 out of 10 times the engine and electrical system fully shut down when I try to start the car moving again. The car can then not be restarted for close to a minute. This results in not being able to move when the light turns green and is dangerous is heavy traffic areas.

There are times when my car comes to a stop shuts off ( auto off) then will not turn back on. This has happened numerous times. The dealers states that this a battery problem.

The main issue is engine knocking and ticking also winding noise. There has been an issue with electrical with rear passengers getting burnt due to heat coming out of rear when rear system is off.

The rear passenger door actuators have both failed. The rear hatch will not unlock using the touch button. We just received notice that our transmission/transfer case needs replacing. $13k for this.

The electric parking brake system continuously fails (every 3-4 months).

See all problems of the 2018 Acura MDX 🔎.

During the summer of 2025, the auto idle engine railed to restart while at a stop light. We had to shut off and restart the car. We took it to the car dealer and they did some sort of software update. It happened again in January 2026 while at a stop light off a highway exit ramp. We took it to a different dealer because we were living in a different city at the time. In their computer system, they could see the repair that had been done. They did some sort of other update and submitted it as a warranty repair for Acura (which the other dealer had not done). They noted there was one other repair that could be done, but Acura would not allow them to do both at once and this update usually fixed it. However, it happened again in February 2026. The engine did not restart from auto idle, this time at a stop light toward the beginning of an eight hour road trip back home. Fortunately, turning off the engine and starting it back up worked. We took it back to the second dealer and they did the additional repair authorized by Acura and submitted as a warranty repair. Three incidents of the auto-idle not restarting the engine in less than a year is not acceptable. The car is unrealiable.

See all problems of the 2020 Acura MDX 🔎.

On several occasions, when the vehicle has been driving and comes to a stop in traffic. The auto start stop kills the engine when the brake is fully depressed. When we take our foot off the brake the engine will not start and a notification is shown on the dash. To start the engine push brake and ignition button. When we follow those directions the it does not start the engine. It usually requires us to release brake several times and continue to push start button. This issue has almost caused two accidents because we are stuck and the traffic behind does not see brake lights, because we have to release the brake. This occurred on the interstate in heavy traffic, and was almost struck from behind by a vehicle traveling at interstate speed, because all vehicles went around us and the upcoming vehicle did to see brake lights.

1) I was struck by a vehicle that ran the stop sign at 50mph. After the impact my vehicle continued rolling forward and wouldn’t stop. I ended up a block away from the accident and my emergency brake, brake pedal and center console brake would not engage. My vehicle was stopped after a car pulled up infront of me for me to rear end it to stop. Vehicle is a total loss and sitting in a tow yard. 2) I was in the vehicle with my 3 children under 7 years of age. Our safety was put at risk because if the accident would’ve happened on a main street I could’ve rolled into on coming traffic. 3) not yet, they have declared the car a total loss and have no interest in inspecting for damage repair. 4) no 5) no failures were detected nor happening prior to accident.

See all problems of the 2023 Acura MDX 🔎.

Auto idle stop/auto start-stop issue- on multiple occasions, occurring randomly, the vehicle will not start at stoplights after auto-idle stop is engaged. Sometimes this happens after the vehicle has been running for over an hour. Currently, the vehicle must be completely powered down and then restarted to revive engine.

I was merging into traffic on interstate. The car lagged as if it wasn't getting gas. I pulled over to get out of traffic. Scary situation. Please advise!.

The battery drains quickly. Have replaced the battery twice since 2022. Something in the car is draining the battery and making it fail. Infotainment screen sometimes stays grey and doesn't go black when car is off. Many 2022 Mdx owners are having similar battery drain issues requiring frequent battery replacements. Please push Acura for a recall and fix.

I was driving in the far right lane on the van wyck expressway when suddenly my steering wheel locked up on me along with the following error messages displayed on the odometer: 1. Collision mitigation braking system problem. See your dealer 2. Road departure mitigation problem. See your dealer 3. Low speed braking control problem. See your dealer. 4. Electric power steering problem. Steering assist not available. Do not drive. 5. All wheel drive system problem. Only front wheels may be powered. See your dealer. 6. Brake system problem. Brake performance may be reduced. See your dealer. 7. Brake hold problem. Apply brake when stopped. See your dealer. 8. Vehicle stability assist system problem. Reduced traction and handling. See your dealer. 9. Hill start assist problem. Vehicle may roll upon brake release. See your dealer. Thankfully I was approaching an exit ramp and I was able to steer my Mdx safely off the expressway. I parked my car on the service road, turned my hazards on and then turned the car off. When I restarted the car the error messages were gone and power steering worked as if nothing happened. Acura will be hearing from me I could’ve been in a serious accident.

Hello… this has happened at least four times. . The car goes to stand by/idle mode when the auto shut off is engaged. I was at a light and car went to idle and when it goes to green. Car just goes to idle mode. I had to put hazards on and restart car. People honking while I’m trying to restart car from this state. It’s like the car does not return on after the gas is engaged.

Intermitted flashing dash lights, headlights, and car alarms. Steering wheel moving up and down. Looks like the same issue as service bulleting 21-055.

I was at a red light. My auto idle kicked in. I went to turn it off and either simultaneously or right before I hit the idle off button my car stalled. It took several attempts to turn back on and a bunch of codes threw. I almost got rear ended. This is a known problem. Ive contacted Acura / Honda via email as well.

Incident 1 (loss of propulsion in traffic) - 12/16/25 the vehicle failed to restart immediately after the auto start-stop system attempted to re-engage the engine. Upon attempting to accelerate, the engine did not restart, resulting in a complete loss of propulsion while in active traffic. The vehicle became temporarily inoperable and unresponsive, creating a hazardous condition with elevated risk of rear-end collision and inability to safely clear traffic or intersections. Incident 2 (failure to start – reliability concern) - 4/1/26 on a separate occasion, the vehicle failed to start entirely upon initial startup (first use of the day). The engine did not turn over as expected, rendering the vehicle inoperable. This incident raises significant concerns about system reliability and dependability, particularly given its occurrence independent of the auto start-stop event. Safety concern: the first incident demonstrates a critical safety defect involving unexpected loss of propulsion in live traffic conditions. The second incident, while occurring at startup, indicates a broader pattern of failure affecting the vehicle’s ability to reliably start and operate. Together, these incidents suggest a potential defect in the starting/ignition or auto start-stop system that may compromise safe vehicle operation and increase the risk of crash or stranding.

This has happend twice in the past 2 months, I came to a red light and the auto stop/start engaged automatically. When the light turned green and the vehicle was supposed to engage it turned off completely, all lights on the dash came on and it and wouldn't restart. Had to open the drivers side door and try to restart the vehicle, it restarted after a few tries. Very dangerous intersection I was stuck in. I have informed Acura of both occasions, they tested the battery cells and confirmed the battery was okay, was told this is a "known" issue with no resolve.

Since the purchase of my Acura Mdx 2019, the following problems have been reported to the dealership and to Honda manufacturing inc. Without any resolution. The dealer shop has replaced recall parts, but the problems persist and have not gone away. The vehicle stalls and stops working while driving. The engine makes knocking/rattling noises upon becoming disabled while driving. The engine would randomly not start when turning it on. When car becomes disabled the dashboard lights up warning lights displaying messages intermittently of the following problems: anti-lock brake system problem (abs), vehicle stability assist (vsa), hill start assist, trailer stability assist, collision mitigation system, road departure mitigation system, adaptive cruise control, lane keeping assist, brake system, brake hold system, electric parking brake, sh-awd, keyless start system and power steering system (eps) problems, while displaying acc and lwks codes. Additionally, the vehicle runs improperly and shuts down completely making the window, doors, etc, inoperable while passengers are inside locking me in and my entire family for long periods of time. A few times has left me either myself or with my children and dog inside. The only place where I take my car for services is where I purchased it (chevy chase Acura). The issues noted are the same reported by the recalls I have received, and I have not taken it somewhere else because of that reason. Nobody can fix them as the problems are manufacturing issues that even Acura/Honda cannot repair. This safety defect can kill or seriously injure me, my passengers, and other drivers on the road. As noted in one of the many recalls the fuel pump defect can cause the vehicle to stop in the highway and could prevent an engine from starting or cause a vehicle to stall while being driven, it potentially increases the risk of a fire, crash, or injury. My car continues to have these issues and nobody is helping me. Please help!.

As I was turning right (slowly accelerating from a complete stop) into a shopping center parking lot, I was entering into the lane behind a vehicle that had just passed in front of me (and was headed in the same direction I was going to turn). My 2022 Acura Mdx low speed braking control system engaged for no reason. The breaks slammed hard bringing the car to a hard, sudden stop, and I thought I had been rear-ended by the car behind me. I pressed the gas slowly again and was able to pull into a parking spot and checked my back bumper…perfectly fine! I googled the issues I experienced and found this is a common problem! this is a dangerous problem! please hold Acura accountable to fix this issue! for now, I have to remember to turn this low speed braking control system off every time I power on my Mdx! I am now scared to drive my car!.

On 11. 25. 25, my Mdx was involved in a multi-car hit and run on highway 101 sb at the laurel drive off ramp. The vehicle sustained two points of impact: (1) substantial front/driver side impact (2) rear-passenger side impact. Despite the severity, location of impact and speed of travel at the time of the collision, all airbags deployed except for the driver side curtain airbag. Importantly, at the time of the crash, the lane keeping assist system (lkas) and associated Acurawatch driver assist systems were activated. The vehicle’s safety assistance technology was engaged and functioning immediately prior to impact. Considering the above mentioned facts, driver side airbag failing to deploy, raises serious concerns regarding possible software or signal-processing malfunction or electronic communication between radar/camera systems and the srs module. The nature and severity of the impact clearly met deployment criteria for the driver side airbag. This failure raises concern that there may be a defect in the srs system, including but not limited airbag inflator component or propellant issue. Supplemental restraint system (srs) crash sensor calibration. Srs control module deployment logic. Crash signal sensors. Event-trigger logic or interconnnect failure. Wiring harness or inflator defect. Whether the system registered steering correction or impact prediction, the failure to deploy increased my risk and resulting injury, as well as compromised the fundamental safety system designed to protect drivers in front-impact crashes.