For the engineer in you: How Toyota will fix the problem
February 1, 2010 @ 5:55 pm

Toyota says it has pinpointed the issue that could cause accelerator pedals in recalled vehicles to stick in a partially open position. The issue involves a friction device in the gas pedal, which is designed to provide the proper “feel” by adding resistance and making the pedal steady. The device includes a shoe that rubs against an adjoining surface during normal pedal operation.

Posted by Angi

Posted by Angi

Much to Toyota’s dismay, though, routine wear and environmental conditions may cause these neighboring surfaces to stick and release, instead of operating fluidly. In some cases, the pedal can become slow to return to the idle position, or the pedal could stick in a partially open position. Toyota says the latter happens in rare cases, but that is the driving force behind the recall.

Toyota’s solution for vehicles owners is this: 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. The carmaker says it 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 instances in which floor mats have trapped the accelerator pedal. The company is notifying owners about how it will fix this issue, and in cases when a vehicle is covered by both recalls, Toyota intends to remedy both at the same time.

Read the latest from Toyota.

Read Toyota’s FAQs regarding the recall.


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