One problem related to cruise control has been reported for the 2001 Lexus RX300. The most recently reported issues are listed below.
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.