Check Engine Light On problems of the 2015 Toyota Highlander

Tl the contact owns a 2015 Toyota Highlander. The contact stated while driving approximately 55 mph, the check engine warning light illuminated and the vehicle loss motive power and failed to accelerate as needed. The contact indicated that the vehicle failed to accelerate above 10 mph. The vehicle was taken to Toyota of braintree located at 210 union st, braintree, MA 02184, and diagnosed with a defective engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 80,000. The VIN was not available.

When driving my Highlander the following error messages appeared, error keeping the start button pressed will cause an emergency stop. I dismissed this. Then it popped up a message that car cannot drive while brake and accelerator are pressed simultaneously. I lost ability to accelerate so tried to pull of busy road, pressing the brake pedal restored acceleration. Then when I stopped in traffic or at lights the car shut itself down and had to be restarted. These error messages kept coming on while I drove to the dealer. I switched off the car at the shop and it wouldnt repeat the problem, no codes have been recorded by the vehicles computer because the check engine light never came on. Toyota and the dealership want to wait until it happens again. Since it happened before, also while it was driving I am uncomfortable as it is a safety concern. I don't want it to happen on a busy highway. I believe the intelligent power module of the car is shorting out and causing the car to go into failsafe mode and shut down creating hazardous driving conditions.