Two problems related to cruise control have been reported for the 2009 Lexus ES350. The most recently reported issues are listed below.
On July 22, 2010 I had been traveling from cape cod and was on i84 using my cruise control on my 2009 Lexus ES, set to 64 mph. I would cancel it by pushing the lever towards me when traffic got heavy and push "resume" when I had an open road. After traveling about 210 mi and using it in the above manner it would not resume as before. The car would surge and accelerate to over 75 mph. I had to cancel the cruise for it to stop accelerating because it was not stopping. I was not using the pedals at any time. I tried it twice. The same thing happened. I then turned off the cruise entirely and didn't use it again.
Lexus ES 350 had uncontrolled accelerator causing speeds in excess of 90 miles per hour until car was forced out of gear. Without attempts to accelerate the car took over and sped out of control. Cruise control was not engaged and brakes would not slow the vehicle. I called 911 and they told me to put the car in neutral which caused the rpms to race out of control. The car then went into reverse by itself until I slammed it into park. The dealer came and picked up the car as it was unsafe to drive. Fortunately this occurred on the freeway and I had room to maneuver and miss cars and obstacles. Had this occurred anywhere else I would be in the hospital.