2019 Acura Mdx

The subject 2019 Acura MDX model includes the tech package which adds several safety features that function through a windshield mounted camara/radar. The system has malfunctioned and none of the safety features are working. The dash displays the following messages: Collision Mitigation System Problem Adaptive Cruise Control Problem Lane Keeping Asist Problem Road Departure Mitigation System Problem automatic headlight system problem At the bottom of the dash, I see Brake System, Crash Warning and Lane Departure lights on as well. Acura is charging $2,319 to replace this unit in addition to a $270 diagnostic fee. This issue is widely reported as a significant issue in several model years for the MDX and should be part of a safety recall. The Acura technician acknowledged this issue is common. I should add this is the second major electronic issue with this MDX within the last several months. The prior issue was multiple system failure warnings that Acura determined were caused by a faulty wiring harness at a $1,604 cost, plus a $255 diagnostic fee. Please note I am the original owner of the vehicle and it has never been in a collision. Additionally, the system has recently mistakenly activated the brakes at very low speed and warned against collisions with other vehicles traveling in the opposite direction while on a curve.

While driving, the vehicle experienced a sudden internal mechanical and electronic transmission failure. Without warning, the vehicle shifted itself directly into Park while navigating the busy intersection of [XXX] and [XXX]. This caused a complete loss of propulsion and left the vehicle entirely immobilized in the middle of a high-speed junction. The vehicle could not be moved, creating an immediate, severe highway safety hazard that required an emergency 911 police response to manage traffic and protect the vehicle from being rear-ended. The dealership scan tool later pulled diagnostic code P0730 (Incorrect Gear Ratio) along with multiple clutch performance failures (P07A4, P07A2, P07A8). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On [XXX], while traveling at highway speeds on [XXX], the vehicle suffered a sudden, complete loss of engine propulsion. The vehicle rapidly decelerated, refused to respond to accelerator input, and forced itself into a dangerous "Limp Mode" in live traffic, creating an immediate highway safety hazard. Multiple warning messages illuminated on the dashboard. The vehicle was towed to Mile High Acura under Repair Order #[XXX]. Diagnostic testing pulled stored Code P0087 for Low Fuel Pressure at the Fuel Rail. An inline fuel pressure gauge confirmed that the low-side fuel pressure was rapidly fluctuating between 55 and 64 PSI at idle. The dealership escalated the data to the Acura Corporate Tech Line (Ref #[XXX]), which reviewed the vehicle's onboard snapshot data and officially determined a terminal defect in the low-pressure fuel pump assembly, mandating the replacement of the low-side pump and both fuel relays. Dealership service records confirm that this vehicle previously had a low-pressure fuel pump recall performed in 2021 under NHTSA Campaign Number 21V-215 (Acura Code CAI). The sudden failure of this replacement component matches the exact failure conditions detailed in the subsequent NHTSA Campaign Number 23V-858 (Acura Codes KGC/KGD). In that expanded campaign, American Honda Motor Co. openly admitted to federal regulators that the early replacement "service parts" distributed and installed during the 21V-215 window were manufactured with the exact same defective, swelling density impellers prone to subsequent deformation and complete failure. Despite their own corporate Tech Line explicitly confirming that the root cause of this dangerous highway power loss was the low-pressure fuel pump—the exact component of the 21V-215 and 23V-858 safety recall campaigns—Acura Client Relations denied 100% safety remedy coverage. Acura refused to provide the technical basis for their denial in writing. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On 04/03/2026, 6:04 PM, Acura MDX 2019, Base, SH-AWD, at 105,254 miles on the odometer, posted U3000-49 control module internal electronic failure. The fault appears to be at the 36160-TYS-A02 camera assembly monocular results in a series of cascading errors on the dash with indicators on for LKAS (Lane Keeping Assist), ACC (Adaptive Cruise Control), CMBS (Collision Mitigation Brake System), brake and transmission warning lights that blink continuously. The sudden lost of safety system especially at highway speeds places extreme risk to occupants of vehicle and other drivers sharing the roadway. The current TSB 23-008 does not repair fault, origin of fault not software, but requires replacement of front camera assembly (36160-TYS-A02) and recalibration at owner expense. There appears to be a lot of 36160-TYS-A02 camera monocular that either have insufficient solder, cold solder, bad crimps or otherwise that over time results in failure.

Under normal driving conditions warning lights for "electric parking brake" and "emissions system problem" came on the dashboard and the 'brake' light began flashing. No change in performance. Auto parts store diagnostic indicated EVAP valve as the possible problem code, along with two other unrelated codes - none connected to brakes or emissions. The 12-volt battery tested strong. Drove another 100 miles with lights still on, but the 'brake' light would turn off after about 5 mins of highway driving/no braking. The next day the warning lights continued. After normal city driving I shut the car off, waited 30 seconds, pushed the start button twice (accessory mode) and held the brake pedal down while pulling up on the brake release button for 10 seconds. Started the car without any error messages.

When I was at 41,528 miles, May 18, the LKAS, ACC & RDMS errors all turned on at the same time. So those systems just stopped working randomly. When I restarted the car, all errors turned off but it turned on again after 10 days, May 28 with 91,966 miles. I brought it to the Acura dealership and they couldn't replicate it. I think this is an issue because one of the highlights of this car is safety but at random times, those safety systems suddenly stops working and the dealership couldn't do anything about it.

Clunking or Looseness in the Outer Tie Rod. The issue is related to TSB-B23-019 Bulletin. The exact same issue is occurring that has happened with years 2022-2023. I have had at the dealership to fix the issue and they never mentioned the outer tie rod cotter pin or castle nut loosening.

I am reporting a recurring safety issue following the Acura rod bearing recall repair on my 2019 Acura MDX SH-AWD. The original recall resulted in catastrophic engine failure and Acura replaced the long block assembly. Since that repair, the vehicle has repeatedly failed and returned to the dealership multiple times for the same issue pattern. Symptoms include: * “Emissions System Problem” warning * SH-AWD, brake, and traction control warnings * strong raw gasoline odor * vehicle becoming undriveable/no-start Timeline: * Recall repair completed with long block replacement * Vehicle failed again the next day * Dealer repaired vehicle * Vehicle failed again about one month later * Dealer repaired vehicle again * Vehicle failed a third time about one week later during normal commuting The recurring failures are accompanied by a strong gasoline smell, creating concern about fire risk and vehicle safety. I regularly transport children in this vehicle and no longer have confidence in the safety or reliability of the recall repair. The dealership has continued repairing the vehicle and providing loaners, indicating the issue is related to the original recall repair, but the underlying problem has still not been resolved despite multiple repair attempts. I am submitting this report because the recall repair has not resulted in safe and reliable vehicle operation.

The contact owns a 2019 Acura MDX. The contact stated while driving at an undisclosed speed and depressing the accelerator pedal, the vehicle failed to accelerate as intended and to exceed 5 MPH. The vehicle was driven to the shoulder of the roadway. The contact stated that several unknown warning lights were illuminated. The vehicle was towed to the dealer, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The contact did not agree with the diagnosis. The contact stated that the failure was a known failure with the vehicle. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 72,692.

The drivers seat is lose and can be felt and heard making noise when driving, even at low speeds. It shifts back and forth upon acceleration and deceleration. Ive had a mechanic look at it and determine it is in fact shifting around while driving, which is extremely unsafe. Upon further research found that many othet Acura/Honda users have had the same issue especially in the MDX model mentioned here. Its even been reported by dealers in brand new, still in the showroom MDX. It is clearly not a wear and tear issue and needs a recall to be addressed.

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.

While driving at 25 miles an hour on a smooth curving road out of a housing area my wife who was driving and my grand daughter in the front passenger seat heard a loud boom that sounded like somthing hit the roof. My grand daughter looked into the back passenger area and said she saw a large buldge in the headliner near the back window on the drivers side. My wife continued driving saftly to the nearest parking lot and parked the vehicle, she got out and inspected the roof and found no dammage of any kind. she opened the back window tail gate and saw a large fist size buldge in the headliner near the open area on the drivers side. She had no idea what happened. There were no waring lights or indicators that indicated a problem and she drove home and showed it to me. When I saw it I thought it was a rear window or curtian air bag that tried to deploy but did not break through the headlinner. I have called the dealer and scheduled an appointment to check it out on thur March 26 at 09:00 2026. I verified that there are no indicators or warning lights that indicate a problem. The service department said it should be safe to drive until then.

The front camera mounted near the rear view mirror stopped working which caused several systems to fail. Acura was slow to respond and was not able to complete the repair because the camera was backordered for several months.

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.

UNKNOWN

While driving at highway speed, the vehicle suddenly lost the ability to accelerate. Immediately prior to this, the vehicle was making an abnormal engine noise, which continued until the failure. "Drive" light turned off and the "Neutral" turned on its own. I tried to get it to shift back to "Drive" and it wouldn't. I pulled off to the side of the highway. The engine stalled and the vehicle would not restart. The vehicle was towed from the highway and we were told to have it towed to Acura dealer in the morning. This incident occurred while Recall 23V-751 (engine connecting rod bearing defect) was open and incomplete.

We had the recall repair done on the start/stop feature on our MDX and it seemed to work initially. But recently the feature has caused the vehicle to stall at intersections again as it did before. It’s happened at least 3 times in the last six months with the most recent occurrence being on 1/20/2026. These occurrences happen despite the fact that we try to remember to turn off the feature when we start our trip. Each occurrence has stalled the vehicle at a traffic light in rush hour traffic. It’s very frightening and we are lucky that it hasn’t caused an accident or gotten us shot! We live in Texas (funny but not).

Factory wheels on Acura MDX cracking at low mileage under normal driving conditions. Structural failure concern.

The taillights on this vehicle are defective. I have already had one taillight replaced and now the other side needs to be replaced. These taillights are $300 each for parts only.

I was merging onto the interstate from another interstate when my car suddenly became limp and would not accelerate. I had zero warning there was anything wrong with my car, only 67,150 miles. I had to coast to the side of the road and it wasn't driveable. I was forced to have it towed to Acura to find out it's a rocker arm oil pressure switch that apparently goes out after 60,000-100,000 miles. Without warning, this is a huge safety issue. There should be a backup switch and notification to get it to a dealer. I had 3 kids in the car, traveling 65 when it suddenly decided to stop accelerating. ZERO warning. It was terrifying. I could have been hit by another car on the interstate, with 3 kids in the car, zero warning to cars behind me that my speed went from 65 to almost nothing instantly. I've always owned Honda cars and this is the first vehicle I've ever had this happen in. Dealership confirmed it was a faulty switch, nothing to do with low oil, dirty oil and I have that in writing. Acrua/Honda should figure out how to alert users that there is an issue before there is an issue. Or put this on the maintenance schedule because I'm terrified to drive this car now. Or how will I know if it's ready to do it again. Again, some type of backup switch that works for a bit until you can get it to dealer. I had to be towed to dealer. Kids had to be picked up. All things that could have been avoided if Honda did a better job.