2022 Acura MDX Complaints

Humming noise from drivetrain. Took vehicle to Acura dealer and was diagnosed as: Loss of all wheel drive due to interfacing spline failure between transmission and transfer case resulting in only front wheel drive. Found open investigation NHTSA with other vehicles experiencing the same failure. DP26001

The car made a clunk sound while driving and wouldn't accelerate. After coming to a stop and trying to take off, the car still had difficulty accelerating. After turning the car off and back on everything appeared fine. The loss of acceleration was unexpected and there were no warning lights or indication of an issue. The lack of ability to accelerate along with the clunk sound caused unnecessary safety risks by not allowing the car to maneuver out of danger and disrupting the flow of traffic unexpectedly. The car then began leaking oil. The Acura dealership noted that the oil was transmission and power transfer unit oil and the car no longer has all wheel drive but only front wheel drive. The loss of all wheel drive without any indication or warning is a serious safety issue because it affects all aspects of drivability (handling, acceleration, traction). They said over time the splines of the power transfer unit input shaft rust and then sheer off which causes metal to damage the tra...

The contact owns a 2022 Acura MDX. The contact stated that while driving at 30 MPH, there was an abnormal vibration coming from the front passenger’s side of the vehicle. There was no warning light illuminated. The abnormal vibration persisted, and there was a grinding sound coming from the vehicle. The vehicle was taken to an independent mechanic to be diagnosed, and it was determined that the power transfer case spline had failed and needed to be replaced. The dealer informed the contact that the VIN was not under recall, and the vehicle was not under warranty. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 97,000.

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.