Quote:
Due to the manner in which the friction lever interacts with the sliding surface of the accelerator pedal inside the pedal sensor assembly, the sliding surface of the lever may become smooth during vehicle operation.
In this condition, if condensation occurs on the surface, as may occur from heater operation [[without A/C) when the pedal assembly is cold, the friction when the accelerator pedal is operated may increase, which may result in the accelerator pedal becoming harder to depress, slower to return, or, in the worst case, mechanically stuck in a partially depressed position.
In addition, some of the affected vehicles' pedals were manufactured with friction levers made of a different material [[stuff called "PA46"), which may be susceptible to humidity when parked for a long period in hot temperatures. In this condition, the friction when the accelerator pedal is operated may increase, which may result in the accelerator pedal movement becoming rough or slow to return. In light of the similarity with one of the symptoms described above that are associated with the PPS material, Toyota has decided to include these vehicles in the defect determination.