Cruise Control Problems of Lexus RX300

When driving on an almost flat freeway with cruise control on 70-75, all of a sudden the rpm goes very very high even though the speed does not go high. At the time the event is happening, I push the brake to take it of the cruise, the rpm come down immediately to normal. I initially thought it was a problem with my cruise and decided not to use it anymore but after the Toyota's events with acceleration I figured that this may also be a related electronic defect in Lexus. My car is a 2001 Lexus Rx300.

See all problems of the 2001 Lexus RX300 🔎.

3 episodes of severe acceleration terminated by shifting to neutral. In each case the rpm cycled from 3,000 to 8,000 and then spontaneously returned to normal after about a minute. In neutral gear. I was unable to overcome acceleration by braking. The gas petal fell to floor each time but was not stuck and returned to normal after the episode was over. These 3 events occurred in a single week. I felt there was some malfunction of the cruise control--which I never use. I had the cruise control disconnected at a local garage and never had another problem. When I told the Lexus dealer about this at the next routine service visit, they said they had never heard anything like this and did not suggest further action. I never reconnected the cruise control. I report this now because of the current concerns. This was clearly electronic in some fashion and I believe involved the cruise control mechanism.

See all problems of the 1999 Lexus RX300 🔎.

Vehicles exhibiting poor acceleration while driving dealer replaced air flow meter and claimed tires were too agressive. Problem still exist.