豐田已經找到了問題所在。
在踏板總成裏麵有彈簧機構，當駕駛者鬆開踏板時，彈簧負責把踏板拉回到原位。但是彈簧會造成踏板用力彈回，從而造成不舒適甚至腳部傷害。於是踏板總成裏還裝有阻尼器，在踏板彈回的過程裏提供摩擦力，從而實現踏板溫柔，平滑，穩定地彈回。這次有問題的踏板就是阻尼器在經過一段時間的使用後，阻力增大直至踏板異常緩慢地彈回或者不彈回。
豐田會在召回的踏板總成裏麵加裝一根拉杆，把阻尼器拉離踏板，從而減小卡住的機會。
How Toyota Will Fix Recalled Vehicles
Toyota has pinpointed the issue that could, on rare occasions, cause accelerator pedals in recalled vehicles to stick in a partially open position. The issue involves a friction device in the pedal designed to provide the proper "feel" by adding resistance and making the pedal steady and stable. The device includes a shoe that rubs against an adjoining surface during normal pedal operation. Due to the materials used, wear and environmental conditions, these surfaces may, over time, begin to stick and release instead of operating smoothly. In some cases, friction could increase to a point that the pedal is slow to return to the idle position or, in rare cases, the pedal sticks, leaving the throttle partially open.
Toyota’s solution for current owners is both effective and simple. A precision-cut steel reinforcement bar will be installed into the assembly that will reduce the surface tension between the friction shoe and the adjoining surface. With this reinforcement in place, the excess friction that can cause the pedal to stick is eliminated. The company has confirmed the effectiveness of the newly reinforced pedals through rigorous testing on pedal assemblies that had previously shown a tendency to stick.
Separately from the recall for sticking accelerator pedals, Toyota is in the process of recalling vehicles to address rare instances in which floor mats have trapped the accelerator pedal in certain Toyota and Lexus models (announced November 25, 2009), and is already notifying customers about how it will fix this issue. In the case of vehicles covered by both recalls, it is Toyota’s intention to remedy both at the same time.
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