2016 Mitsubishi Lancer Engine problems

2016 SE 2.4L AWC. Purchased car in February 2022 at 66k miles. In December of 2022 at 78k miles, car lost majority power while traveling at 40 MPH, threw 'Tranmission Servie Required' warning light. Drove 3 blocks home, parked for 2 hours. Turned car on and drove normally without lights. Previous event happened x3 before changing transmission fluid in February 2023. From February to May, roughly 500 miles, no codes occured. However, occasional hesitation when accelerating from a stop. Then, in May 2023, while traveling 80 MPH, RPMs shot to 6000, car began to lose power. Pulled to shoulder, turned car off and on, and was able to travel home without issue, another 15 miles.

Vehicle accelerates by it self

The contact owns a 2016 Mitsubishi Lancer. The contact stated that while his wife was driving approximately 50 MPH, the RPM increased from 2,000 to 5,000. Additionally, speedometer became inoperable, he brake was not working as designed, and the Service Transmission message was displayed. The vehicle was taken to an independent mechanic who referred the contact to the dealer. The contact called the local dealer and was informed that the VIN was not under recall. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The contact stated the failure was similar to NHTSA Campaign Number: 17V609000 (Electrical System). The failure mileage was approximately 60,000.