2023 Hyundai Santa Fe PLUG-IN Hybrid

Two issues with powertrain/transmission: 1- The powertrain/transmission fails intermittently- vehicle RPM goes sky high but vehicle receives no power, seems to fail/lose power. Has happened in very dangerous road conditions where unexpectedly was struggling to get the motor to engage/get power to the vehicle. Check engine and check hybrid system lights accompanies the problem. 2- The car should be driveable in electric only mode without use of gasoline. The powertrain/transmission seems to struggle to shift between electric and gas motors. HYUNDAI cannot seem to correctly diagnose or fix the issue. Does not seem they have proper diagnostic process included on the car- despite finding error messages stored in computer, they initially said they could not recreate the problem and therefore could not fix. 3 different trips to Hyundai dealership repair center, in total they have had my car for 10 weeks. They have replaced the transaxle and sent the car home, but that did not cure the issue. They now have my car again. It just does not seem they know how to identify or fix the issue. From online forums, I have learned MANY owners are experiencing the same problem and the same challenge to diagnose.

The contact owns a 2023 Hyundai Santa Fe. The contact stated after starting the vehicle, the transmission would only shift into neutral and would not shift into any other gear. In addition, the contact stated the vehicle failed to turn off as needed. The contact activated the parking brake to exit the vehicle safely. The contact stated prior to the failure, the vehicle had failed to shift into reverse; however, the failure was self-corrected. The contact stated several unknown warning lights were illuminated. The contact stated an independent mechanic was able to release the emergency hatch and disconnect the battery to restart the vehicle. The vehicle was temporarily repaired. The vehicle was taken to a local dealer for additional diagnostic tests. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 9,000.