The transfer case splines between the transfer case are stripping causing the car to lose power in the rear wheels forever. This is a safety hazard as now the wheels lose traction and massive oversteer. This is dangerous in many conditions especially rain as turns are much more prone to sliding and losing traction. It was confirmed at the dealer and is a known issue in the Acura car community. The only way to diagnose the problem is putting it on the left And putting the car in drive to see if the all wheel drive system is working (all 4 wheels spinning). This is a scary problem for owners as no codes are generated since there is no sensor to catch this. The cars other system were also designed with the intention of the car being all wheel drive so this could lead other systems to fail causing a likely accident or collision.

- Marietta, GA, USA

Power take off unit on the TLX TYPE-S-??s are stripping at the splines where the drive shaft and PTU meet. This disables the cars AWD system without triggering any codes, giving drivers false confidence to drive in low traction environments which may lead to accidents. The car retains FWD function but struggles to gain grip on the road at all speeds because it is an AWD designed platform. The dealership of Spreen Acura diagnosed my car and confirmed that the PTU fluid was previously leaking and had metal shavings. They also confirmed that the car was now FWD and struggled with getting traction with acceleration. This is a problem as it does not show any indication during failure, there could be many people with failed PTU-??s who are unaware and driving daily. With rainy season coming up, this could pose a big risk as drivers with these cars will think their TYPE-S is AWD and my end up getting into accidents when driving unaware.

- West Covina, CA, USA

The all-wheel-drive stops working and the car becomes front wheel drive only. There are no warning lights on. The only way you could tell is to jack the car up with all four wheels off the ground and put it in drive to see if all four wheels are spinning. Also the driveshaft should be turning out of the transfer case. The the roads are wet or with snow the front wheels brake free very easy and the traction light comes on, which is also sign. I took it to the dealer and they verified the issue. They said it needs a new transmission and transfer case because the splines on the output shift of the transmission strip out and also damage the splines on input shaft of the transfer case.

- Mastic Beach, NY, USA

All wheel drive system began to fail. Experienced a loud bang followed by a leak from the transfer case that was observed when I arrived home. No check engine lights of any kind just car is stuck in front wheel drive. Dealer confirmed AWD system is not working. No safety risk and no insurance notifications or police because item is covered under warranty.

- Fort Worth, TX, USA

Transfer case failure with no warnings or symptoms of problem prior to failure. This is a safety issue as my car was only operating In Front wheel drive due to the transfer case failure. This is a common issue that needs to be investigated.

- Pleasant Valley , NY, USA

transfer case and drivetrain failure from spline stripping. No hard driving performed yet parts still failed. Car went from AWD to FWD without codes. Car failed to gain traction when going up hill and nearly rolled back into another car.

- West Covina, CA, USA

The All Wheel Drive system stopped working due to a transfer case/transmission failure. The repair was warrantied by the dealership however everything that i have read states this is a common issue and acura has not provided a permanent fix to prevent this from happening in the future

- Rutland, MA, USA

My car is now a front wheel drive car instead of all wheel drive car -?? no check engine no light nothing except the car is bringing no more power from the back wheels

- QuÉBec, PR, USA

Transfer case splines sheared, causing the awd system to fail. This eliminates power output to the rear wheels and could cause a loss of control while driving in sub par road conditions. This appears to be a very common issue among the Type-S trim.

- Ada, OH, USA

Noticed my 2021 Acura TLX A-SPEC SH-AWD has fluid leaking from the rear differential where the driveshaft connects. The vehicle has 16,531 miles on the odometer. Honda is releasing a recall for leaking rear differential on the Honda CRV as well Accords. Honda may want to include the Acura TLX's as well in the recall as they are reporting the drivesshaft may cause serious damage at high speeds if the differential is leaking.

- Southington, CT, USA

The vehicle VIN - [XXX] The vehicle, 2021 Acura TLX, was purchased on June 8, 2021, from the showroom floor of Metro Acura Dealership. The vehicle was sold as being compatible with iPhone, Bluetooth HandsFree Link, and Apple CarPlay. Not to mention the innovative technology, Automatic Lighting Control, and Auto-Idle Stop System. The vehicle was purchased with a full 4 year/50,000-mile warranty. I have dealt with Metro Acura in Montclair, CA, Spreen Acura in Riverside, CA, and Wittmeier Honda in Chico, CA. I have attached the service reports from the said dealerships for your review. This does not include the three times I have called for roadside assistance due to being stranded by the 2021 Acura TLX. September 6- The vehicle would not unlock, even with the key. Stranded in a parking lot. Called Roadside assistance by the time some came, the car unlocked. September 8- the warning light Auto Idle Stop came on while driving September 10 -?" I took the vehicle to Spreen Honda and spoke with [XXX]. The vehicle had 3,275 miles. I was told that if lights are not on now, there is nothing they can do. I also explained that the Bluetooth is sporadic, and the vehicle will ring even after the phone call has been answered. I insisted they keep the vehicle and try. Later the same day, after I picked up the vehicle, warning lights came on again about 40 minutes later -Auto Idle Stop, Automatic Lighting Control- light while driving During this time, the warning lights would continue to come on intermittently while driving. September 15- I took the vehicle to Metro Acura and dealt with [XXX]. The vehicle had 3910 miles. I explained to them about the vehicle not unlocking and warning lights. They stated something occurred when they put the wrap on the car, which caused the vehicle to not open; they said it was fixed. Unable to find a reason for warning lights. September 20 -Auto Idle Stop, Automatic Lighting Control- l INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C

- Victorville, CA, USA