NHTSA Complaint #11512802 — 2020 FORD EXPLORER

When stopped at a light the engine suddenly accelerated forcing a hard braking action to prevent an accident. after 2-3 seconds it went to idle still in gear. This has happened 3 times the third time 2 witnesses said that it was not caused by braking with their foot on the accelerator. In reviewing the three episodes I noted that the air-conditioned switch was engaged all three times when this uncommand occurred. This never occurred when the car was moving only at a stop. It seems that the air conditioner was called to turn on by the body control module which cause the engine RPM to decrease which cause the power train control module to react increasing the demand to the throttle body which either stuck high or was over commanded in not reacting in a fast enough manner to satisfy the power train control module. When this occured I thought we were going to hit the car in front of us. I think this is correctable with some changes in the power train control module programing.