Cruise Control problems of the 2015 Toyota Highlander

Driving forward into parking space. Just about stopped. Pressed break. Car lurched forward at hight speed suddenly, causing car to jump curb at top of parking spot and careen down hill (onto side walk). Car out of control for about 2 seconds. Was able to break in hill, which prevented me from hitting car parked perpendicular on street below. Bottom of car scraped curb when car jump curb and lurched forward. Bottom front bumper scraped. There was an icy patch at top of parking space. It seems like when wheels rolled on top of icy patch, the car lurched forward. Car might have accidentally been on cruise control at the time.

Tl-the contact owns a 2015 Toyota Highlander. The contact stated that when the cruise control was activated and set at 55 mph the cruise control failed to maintain the set speed when going downhill. The vehicle was taken to the dealer for diagnostic testing. The contact was informed by the dealer that the function was normal when traversing a hill. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 2,999. Ah.

Light on cruise control lever on steering column flickers off and on if vehicle is in motion and steering column is in use. Alternator in car already required replacement at 73,000. Dealership was advised of issue and I was told there was nothing wrong with the lever.