Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2019 Acura MDX owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2019 Acura MDX. The contact stated that he recurringly experienced failures with the instrument panel brightness being dimmed and then not displaying properly as needed. The contact turned off and restarted the vehicle and the instrument panel operated as designed. No warning lights were illuminated. The vehicle was taken twice to a local dealer; however, the failure was not duplicated, and the vehicle was not repaired. On another occasion while driving and using the GPS, the displayed failed operate as needed. After turning off and restarting the vehicle, the instrument panel operated as needed. The vehicle was then taken back to the local dealer however, the mechanic was unable to duplicate the failure. The contact stated that the vehicle was however, repaired under NHTSA Campaign Number: 21V215000 (Fuel System, Gasoline). …
The contact owns a 2019 Acura MDX. The contact stated while at a stop light and attempting to make a left turn, the vehicle lost motive power and stalled. The contact stated that a warning message to "Park and Restart" the vehicle was displayed. The contact shifted the vehicle into park(P) and attempted to restart the vehicle however, the vehicle would not start immediately. The contact stated that after several attempts the vehicle restarted. The vehicle was taken to the dealer and the contact was informed that the brake assist feature had drained the battery. The contact was informed that the battery needed to be replaced. The manufacturer was not contacted. The failure mileage was 32,000.
The contact owns a 2019 Acura MDX. The contact referenced NHTSA Campaign Number: 21V215000 (Fuel System, Gasoline). The contact stated that after refueling the vehicle and driving several miles, the fuel gauge fluctuated to empty. The contact stated that the fuel gauge would indicate the incorrect amount of the fuel in t fuel tank. No warning light was illuminated. The vehicle was taken to the dealer where the failure could not be duplicated. The manufacturer was notified of the failure and the contact was informed that there was no recall on the VIN, and transferred the contact to the NHTSA Hotline. The failure mileage was approximately 44,000.
The contact owns a 2019 Acura MDX. The contact stated that upon locking the doors with the key fob, the vehicle would remain unlocked. Due to the failure, the contact believed that someone entered the vehicle and changed certain setting from the original setting. The contact was informed by the dealer that the setting change should not have shown on the multi-information display (MID) screen. The manufacturer was notified of the failure. The vehicle was not diagnosed or repaired for the failure. The failure mileage was approximately 40,400.
The contact owns a 2019 Acura MDX. The contact stated that while stationary at a traffic light, the vehicle stalled. The contact stated that the battery warning light was illuminated temporarily. The contact was able to restart the vehicle and continued driving to her destination. The contact stated the had occurred four times. The contact took the vehicle to a local dealer who was unable to duplicate the failure. The manufacturer had not been informed of the failure. The failure mileage was approximately 59,000.
Starting having an issue over the last few weeks where the car will shut off as it should with the idle start/stop enhanced but when I release the brake, the car goes into neutral and doesn't start... have had this happen 4 times already and was finally rear ended today due to this fault.
My 2019 Acura MDX with 100K miles stalled on the road with several alerts on the dashboard and went into Parking mode with no further movement. Had several alerts stating Transmission failure, Blind Spot monitoring failure, Auto break system failure and vehicle stalled on the road. Had similar issues previously where the steering jammed and vehicle was stalled on the signal, took it to Acura dealer and they had to fix some circuit / reset the circuit board. Was ok for few months and last week the car stalled with Parking sign on. Towed the car to the Dealer service center, they diagnosed and identified there is a failure with transmission. They quoted around 10000 dollars for replace new and 7000 for used transmission. This is huge money, hence called Acura customer care for any review/support but they claimed this issue is not in their current recalls or claims, so cannot support. …
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. …
The contact owns a 2019 Acura MDX. The contact stated while attempting to make a left turn from a complete stop, the vehicle shut off inadvertently. There was no warning light illuminated. The contact was able to restart the vehicle and continue driving. The vehicle was taken to the dealer, where an unknown software update was performed under an unknown recall. Additionally, the contact stated that upon pressing the park(P) button to park the vehicle, the vehicle failed to respond. The contact stated that the vehicle responded after several attempts. The contact stated that while driving at various speeds, the vehicle was jerking upon depressing the accelerator pedal. The contact received notifications of NHTSA Campaign Number: 23V751000 (Engine and Engine Cooling) and related the failure to the recall; however, the part to do the recall repair was not yet available. …
When stopped at a light or in traffic the vehicle engages the auto idle feature. (turns off the engine to save gas). Upon releasing the brake, the car should re-start, instead the car does not start. The car jumps out of the drive gear into neutral on the transmission. The electrical system goes crazy and does not allow you to either turn off the car's electrical system or re-restart the car using the car's on/off button. This has happened to me at least 5-10 times over the last year. Each time the car becomes immobile in the middle of the road or highway for up to 2 minutes, until the electrical system resets and allows you to turn off all the power and re-start the car. It's a very scary and dangerous situation, when my vehicle is stranded in the middle of a highway or a road for up to 2 minutes, as traffic tries to avoid crashing into my vehicle. …
Electrical complaints in other MDX years
Frequently asked questions
How common are electrical problems on the 2019 Acura MDX?
NHTSA has 41 complaints about the electrical system of the 2019 Acura MDX, 22% of the model year's 190 complaints. The component named most often is instrument panel › fuel gauge › fuel level float/sensor/sending unit (1 mentions).
Is there a recall for 2019 Acura MDX electrical problems?
No. NHTSA lists no electrical system recall for the 2019 Acura MDX, though it has 9 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2019 Acura MDX electrical problems start?
Half of the complaints with a recorded mileage happened before about 20,000 miles, and 60% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 0 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.