Based on a diagnosis by a 3rd party, this vehicle is affected by the issue identified in Part 573 Safety Recall Report, 23V-751. The check engine lamp is flashing, the fault code associated with this issue is showing, there's a knocking sound coming from the engine, and the vehicle has decreased power when the check engine lamp is flashing. However, the VIN for this vehicle is not identified in the safety recall.

- Aldie, VA, USA

Transmission failure driving on the interstate. Engine shudder ; speed dropped to 25 mph. Warning lights flashed indication Transmission issue. Vehicle was towed to a AAA Approved Independent shop where the issue was verified.

- Shoreline, WA, USA

Possibly the connecting rod bearings failed. The engine with less than a 100,00 milage has a loud knocking and clunking sound and losing power, but the car is not part of the Honda/Acura J35 engine recall.

- Elgin, IL, USA

Second motor is experiencing connecting rod bearing noise, replaced 3.5 Litre motor with salvage yard replacement, just coming up on 99k, and noise is back similar to what I heard and had Acura dealer diagnosis before replacing with a used motor.

- Etters, PA, USA

My engine is making noise and has a slight rattle when idling.

- Thomasville, GA, USA

Prior to this incident, we had no major issues with the car and performed all necessary oil changes. While driving 30 mph the car began to brake and stutter by itself and every emergency light came on the dash. The car behind us almost hit us from the car randomly braking. We took the car to the Acura dealer and they reset the computer and charged us $435. We drove off the lot and 15 miles later the car did the same thing. We took it back to the dealer and they said the camshaft malfunctioned. We were then charged another $2450. From our understanding, camshafts should last 200k miles. Our car only had 54k miles on it.

- Highland Park, IL, USA

Engine frozen up while driving on 231 towed to Acura Montgomery Al. They installed a used engine to the tune of 8700.00

- Taylor, AL, USA

At approximately 136,000 miles, my 2017 Acura MDX developed a loud ticking/knocking noise. Despite being well-maintained with verified clean and sufficient oil, both an independent shop and Anderson Honda of Hunt Valley, MD, confirmed a bottom-end failure, requiring a full engine replacement. This failure left my wife and children stranded on the road with extremely limited power, placing their safety at risk as they struggled to move out of the roadway. Acura corporate and the original dealership provided no assistance, forcing us to trade in the vehicle at a significant financial loss. The problem was reproduced by both an independent service center and dealership, with no prior warning lights appearing.

- Upper Falls, MD, USA

Had engine failure in August of 2023 and had to replace the engine...in November of 2023 Acura had the Safety Recall due to engine failure. We contacted Acura and was told that our VIN had yet to be recalled and we are still waiting to get reimbursed.

- Mansfield, TX, USA

Vehicle lost power while driving and warning lights came on. Drove straight to Acura dealer and they diagnosed bearing failure on connecting rod cylinder #2. Dealer stated it would need a new engine. The Vehicle VIN was not covered under the 2016 -2020 Honda/Acura 6cylinder recall for connecting rod failure.

- Kingsport, TN, USA

The car stalled at a traffic light and could not start again. The engine had seized, and I had to pay to replace it. There is a known recall with this year make and model.

- Belvidere, IL, USA

I have a 2017 Acura MDX that had around 98k while I was driving down the highway at 65 mph all lights came on the dash and lost acceleration would not go over 45 MPH on a very busy highway. Had to have the vehicle towed per dealership- towed to Jay Wolfe Acura, Overland Park, KS. They said engine needed to be replaced due to the miss fire of rod knocking. There was no other option for replacing the rods had to replace the engine. In addition they replaced with an used engine that is a 2016 not even the same year. Dealer made us aware of the recall for this issue but advised us the Vin# is not under the recall so we had to pay out of pocket. I have tried to work with Honda and the dealership for reimbursement since there have been numerous vehicles with this exact issue but the Vin#'s not under the recall but with no help at all. I have provided documentation and explained the issues and the repairs. I have documentation but was not able to add it to the document listing below

- Kansas City, MO, USA

The contact owns a 2017 Acura MDX. The contact stated that while driving at approximately 20 MPH uphill, several unknown warning lights illuminated. The contact observed a clanking noise emanating from the engine compartment and the vehicle stalled. The vehicle was not able to be restarted. Additionally, the contact observed condensation underneath the front of the vehicle. The vehicle was towed to an independent mechanic and the contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 112,000. The contact stated the reason for the engine seizing was due to broken connecting rods #2 & #5. The mechanic stated the only other reason the engine would seize is due to not having any oil at all in the vehicle, but there was oil present in the vehicle so it couldn't be that and that it was the connecting rods bearings breaking that caused it.

- Bentonville, AR, USA

Internal damage at the connecting rod bearing causing engine failure. I have a video from the dealership explaining everything. It is too large to upload to this submission worksheet. There is an active recall on for this exact problem on other years of the MDX and TLX but my VIN is not included in the recall.

- Columbus, OH, USA

The contact owns a 2017 Acura MDX. The contact stated while driving 25 MPH, the vehicle lost motive power and was jerking. Several unknown warning lights were illuminated. The contact drove the vehicle to a local mechanic to be diagnosed. The mechanic retrieved DTC code: P0369 (Reduced Engine Power). The mechanic replaced the camshaft and the sensors. The manufacturer was not made aware of the failure. The failure mileage was 105,000.

- Linden, NJ, USA

All lights lit up on dashboard with no previous sounds, knocking, or issues. Upon getting the vehicle towed, the dealership said that the CAM Shaft and sensor needs to be replaced. Which is approximately a 4K dollar repair. Upon further inspection. The dealership showed me a copy of a 2018 notice where this was a known issue with a specific code of C0369 where it states that there should be no repairs but only replacment of the complete unit and that the machining of this part is know to have substandard machining spec issues which will cause the shaft to erode. This vehicle only has 67,589 miles on it. (which is out of warranty by 6800 miles.) All of the information that I have investigated states that the only way a CAM shaft goes bad is insufficient lubrication, improper break-in, reusing old/worn components, mechanical interferences, and inferior hardware/hardware not torqued to spec. I beleive this issue needs to be further investigated especially since there is also the new recall which states the crank shaft rod bearing was also failing due to the original machining was out of spec. In addidtion, if this was a known issue withthe CAM Shaft since 2018, why was I not notified and why is this not a recall? The dealership currently has 3 other cars in its service area with the same known issue. Of note, this vehicle was running fine when it was parked and upon starting the car and going approximately 5 mile per hour, all warning lights lit up and said to place the car in park. No other prior warnings or issues to speak of other than stalling when stopped at a red light.

- Panama City Beach, FL, USA

The contact owns a 2017 Acura MDX. The contact stated that on several occasions while driving at various speeds the vehicle lost power. The vehicle was taken to a dealer where it was diagnosed that the clutch and gear needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 40,000.

- Chapel Hill, NC, USA

Great hesitation, in acceleration, clicking of gears and drive and while putting in reverse also clicking of the years when accelerating

- Charlotte, NC, USA

While driving at freeway speed, fourth lane from the right, the vehicle became unresponsive to the gas pedal input and started to glide. I managed to get the vehicle to a narrow shoulder on the right before coming to a complete stop. I had one of my grand child in the car seat as a passenger at this time and I was very concerned about stalling in traffic and getting rear ended.

- San Diego, CA, USA

On Friday May 5th, 2023 myson was driving our 2017 Acura MDX in heavy rush hour traffic on Interstate 355 near Homer Glen when suddenly and without warning the transmission failed and caused sudden deacceleration. He drove the car which was going 7 mph and engine revving and starting to clatter to get off the freeway. The check engine light came on. He called and informed me while on the exit ramp. I instructed him to pull into the Gas N Wash filling station at 15930 W 159th and shut the engine off, I left home immediately and upon arrival I looked under the hood for oil leakage or low level and belts broken. When I started the motor a knocking sound caused me to turn it off. This could have caused an accident due to heavy traffic at 70 MPH posted speed limit. The car has been towed to local mechanic shop for diagnosis. My online research indicates a Class Action Suit and countless complaints of similar unsafe operation and transmission failure. We purchased this Vehicle new in 2017 from Rizza Acura, Orland Park, IL and have had regular maintenance performed since purchase date.

- Orland Park, IL, USA