2022 Acura Mdx

Transfer case splines completely sheared off. No warning lights, nothing. Car is operating in in a 2 wheel drive configuration. Now need new Transmission, new transfer case, new differential. Can provide dealer videos detailing situation if requested.

The contact owns a 2022 Acura MDX. The contact stated while driving at various speeds exceeding 30 MPH, the vehicle failed to accelerate as intended upon depression of the accelerator pedal; however, the RPMs increased. The vehicle was taken to the local dealer, who diagnosed that the transmission had failed and needed to be replaced. The vehicle was not yet repaired. No further information was available. The failure mileage was 60,000.

My transfer case and transmission splines stripped out as I was leaving a parking lot on a rainy day... i heard a bang... went to dealer, they confirmed drive shift to rear wheels not turning. Today July 3rd 2026, my MDX-2022 With 92k miles is at the Acura dealer... I fortunately have an Acura Precision warranty.... which will cover my repair...

Component or system failure: AWD - All wheel drive failure, dealership stated the transcase is leaking causing the failure. Safety: this has impacted the vehicles traction, especially on wet roads Reproduced: the dealer found the issue and reproduced it Inspected: yes, by the dealer Warning lamps or messages: None 2022 MDX Advance

The malfunction was both rear drains from the sunroof were clogged and possibly kinked. The dealership might still have the components but did not give us access to them. The clog caused the water to enter the vehicle and accumulate. In addition to wet carpeting, an electrical component shorted and failed damaging the Infotainment system. If this had happened during vehicle operation with water moving around, electrical systems could suddenly fail while driving. The vehicle was inspected by the insurance adjustor but was deemed a maintenance issue even though there exist no maintenance instructions or dealership directives for maintenance or inspections. Owner maintenance would not be possible as special tools would be needed without which damage to the drain lines might occur. There was no warning, messaging, or instructions that maintenance was necessary for this item or that it could fail. The first sign was the sound of sloshing water in the vehicle during driving and the failure of the infotainment system. As a remedy, the dealership insisted on replacing the drain lines rather than cleaning them out, which implies that either the dealership was creating extra work for themselves or the drain line could not easily be cleaned.

Noticed fluid was leaking from bottom of car. Took to dealership and they found the transmission output shaft was twisted leading to destruction of transmission seals leading to fluid leak. They recommend full replacement of the transmission and transfer case. It appears NHTSA is already investing this known problem for the 2022 mdx where the transfer case fails and the vehicle loses its AWD function and becomes a FWD car.

MY VEHICLE 2022 ACURA TYPE S HAS A TRANSMISSION SYSTEM PROBLEM, BLIND SPOT INFO PROBLEM, AND A ALL WHEEL DRIVE PROBLEM THAT ONLY MY FRONT WHEE;S MAY BE POWERED. IT LOOKS LIKE THE TRANSFER CASE MAYBE FAILING. MY VEHICLE ONLY HAS 25,000 MILES ON IT AND IS ABOUT TO BE OUT OF WARRANTY

My 2022 Acura AWD MDX with 95795 miles lost the power to the rear wheels. The spline between the transmission and the transfer case stripped. The transmission and transfer case had to be replaced for $14,442.37. I had Assurant for extended warranty, and they reluctantly paid most of the repair. The shop said this was the first non-turbo (sport) model they have heard of breaking. I believe there are several complaints filed about this issue. I'm retired and travel a fair amount in the mountains.

I accelerated from a complete stop and heard a loud bang from the transmission at 10 mph. No warning lights came on, but car now only operating in front wheel drive mode instead of AWD. Front wheels will spin under hard accelerating confirming loss of power to rear wheels. Local mechanic confirmed issue by putting vehicle on lift and showing rear drive shaft spins freely. This is a know issues for this vehicle and NHTSA has open investigation into splines connecting transmission to transfer case sheering off under load. Investigation Number 11712885.. This should result in a recall for Acura at no cost to customer.

Driveshaft spinning freely no power transfer , vehicle is currently all-wheel-drive condition indicate severe connections between transmission and transfer case . both components are damaged vehicle need replacement of transmission and transfer case . Serviced at McGrath Acura Morton mGrove, Illinois. 06/19/26

My power steering has went out while I was driving at least 4 times in the past year. I contacted the dealer each time they say they've never heard of this happening. I took it in they couldn't replicate the issue so no fix although the codes were stored. All the warning lights came on braking, steering, lane departure, lane keeping, parking etc. It happened again today each time by 1 year old was in the car. They say if it happens while the dealership is open bring it. But it's always happened after hours. I was able to stop car each time turn off then back on and its fine. I even replaced the battery last year thinking that would fix the issue and it didn't. I'm not sure what else to do but I don't feel safe driving the car with my baby in it anymore. I deleted the pictures by mistake but I found where a rdx had the same issue I'll attach the codes that came up.

Design flow at the CORROSION BUILT UPAT SENSOR CONNECTOR. Water gets in and corrodes connector. Causing over $8000 in repairs for the following: COMPLETE FLOOR WIRE HARNESS EXTENDING TO STROKE SENSORS- CORROSION BUILT UPAT SENSOR CONNECTOR CAUSING FAULT IN FLOOR HARNESS.

MDX back sunroof drains cracked causing the car to flood. The water came into the back hatch and also damaged the amp to the speaker system. All of the Carpet had to be pulled out of the car. This car is only four years old. Luckily, I caught it because my whole back hatch was full of water, but this could’ve caused mold and serious health problems. I have found 100’s of reviews on many different online portals stating this is a common problem with a 22 to 25 MDX. I just bought this car a year and a half ago used and I have to now put another $5500 into it. I did buy the extended warranty, but they are saying this is not included in that. From what I’m seeing on Acura MDX group pages this is an extremely common problem that’s costing people a lot of money. There is no way apart should be breaking this easily in a car that’s four years old, especially a luxury car such as the MDX advance.

I was driving down the highway and a passerby notified me that my car was smoking. There were no indicators on the car notifying me of any issue. We pulled over and saw the car was leaking oil heavily. When taken to the dealership, they notified us that there was a leak in the transfer/transmission case and the whole transfer case would need to be replaced. The car is well maintained and had been recently serviced and no issues came up. It's very scary that there were no indicators of issues on the dashboard and my family and I could have been endangered while driving on our family vacation. Acura knows of this transfer case issue and has had to replace many of them in recent MDXs. This is a safety issue that needs to be investigated immediately.

The component system that has failed is the Front Diff/Transmission area. Driveshaft spinning freely in park with rotations to rear wheel. I was driving home and heard a noise that sounded like something broke. Immediately pulled over and had Vehicle towed. I had my kids and husband in the vehicle with me. I'm glad we weren't driving on the highway. The vehicle was brought to Friendly Acura in Middletown, NY. They were able to diagnose the problem. I had an aftermarket warranty (Endurance Warranty Co.) awesome refused to pay for my vehicle starting it was a "pre-existing" condition. When I tried to explain to them this was not the case, they still wouldn't approve my claim after my vehicle was at Acura for 5 weeks and having 2 of their inspectors come out. Due to the amount of the repair (approximately $15,000), I am unable to pay for this repair. I had Acura out my vehicle back together and the vehicle is currently sitting in my drive way. There were no warning lights at any time prior, during or after failure of components.

Reporting an additional case in support of ongoing defect petition investigation DP26001. 2022 Acura MDX Type S SH-AWD, currently at 63,700 miles. While driving and making a turn, I heard a grinding noise with no warning lights illuminated. I stopped immediately and shut off the engine but noticed no abnormality. I restarted the vehicle and drove with no further issues or noises. Later, during a scheduled oil change, I discovered that the area between the transmission and PTU was covered in oil. The Acura dealership diagnosed a bad PTU seal and replaced the PTU under powertrain warranty, but completely disregarded my concern regarding investigation DP26001 and the known issue with stripped splines. The leak was repaired, but several weeks later while driving in the rain, the vehicle felt very unstable during acceleration on wet pavement. I raised the vehicle on a lift and engaged drive to inspect AWD function. The rear wheels were not spinning while the front wheels were, and the driveshaft was also stationary. When I brought this to the dealership’s attention, they stated this is normal SH-AWD behavior — however, I have personally observed all four wheels spinning under identical conditions in another Acura of the same model and configuration. I am confident the transmission-to-PTU splines are stripped and am escalating this to Acura corporate for further investigation.

Under medium acceleration vehicle shuddered a lot. Currently it’s only driven by the front wheels and it will torque steer a lot. I’m assuming my splines are stripped to transfer case. Thankfully, I am under warranty and I’m going to get this repaired.

My wife has felt for quite some time that the traction on our 2022 Acura MDX is lacking. She first attributed it to tires, but after replacing them in November of 2024 she said that the issue was still present. She mentioned it to the Service Advisor at Bloomington Acura but we don't recall the exact timing of that and don't have a record of it. In February of 2026, while driving in snowy conditions we arrived at a vacation property. In driving up the driveway, the MDX got stuck. We got out of the car to try to push it and noticed that the rear wheels weren't rotating (I would expect them to on an AWD vehicle when the front wheels spin). We were able to put wood pieces under the front tires and get the vehicle up the driveway. We reported it to the dealer, who told us that if there were no warning lights there was no issue. We asked if they could test it because AWD wasn't working. We didn't get far but asked during a recent oil change if they could test the AWD. We had to push for that but they did test. They indicated that the rear drive rotated freely, indicating that "splines" between the transmission and transfer case had failed and it would cost $14,000 to repair (our MDX is now beyond the mileage threshold of the power train warranty. I then researched and learned that this issue is under NHTSA investigation DP26001. Customers don't have a reasonable way to know that AWD isn't working; we have brought it up previously with no way of "proving" that it isn't working (no warning lights). We believe that Acura should extend the power train warranty and repair our vehicle. The dealer let us know that they have another customer with the same issue right now. I don't believe that dealers file reports to NHTSA and imagine this issue is bigger than the number of complaints filed. AWD isn't needed by many, but it affects our safety in snowy conditions.

My 2022 MDX purchased new in 2021 experienced an unexpected loss of AWD functionality at 5 years old with 77000 miles when the splines of the transfer case sheared with the transmission. The failure reverted the car to FWD and became very easy to lose traction in anything but ideal road conditions. There were no signs of this failure. No warning lights, no indication on the AWD power distribution monitor, and no sounds or other indications. I rigorously followed all maintenance schedules and performed all regularly scheduled maintenance at the Acura dealership. There have been numerous times when I am attempting to accelerate from a stop while turning onto a busy road where the unexpected loss in traction resulted in me nearly causing an accident. I took in my vehicle for service on 5/22/26 and they confirmed the issue is the transfer case spline failure as noted by many other Acura SH-AWD vehicles with the active NHTSA investigation. I would like to add my complaint to that filing and highlight the insidious danger that comes with the failure when the vehicle suddenly does not perform as expected. Given that my vehicle was barely behind the powertrain warranty period when the failure occured, I am now expected to cover an enormous bill that covers the replacement of the transmission and transfer case.

When about to make a left turn since oncoming traffic on to highway I hit the gas quickly after stopping and heard a loud bang. Drove till I got off the highway at a red light I hit the gas and noticed the front wheels was spinning and realized it wasn't a awd. Took it the dealer and they realzied the driveshaft was spinning by hand.