/ 6 ▁or ▁poly phen yl ene ▁sul f ide ▁within ▁the ▁ped al ▁assembly ▁to ▁re create ▁the ▁tact ile ▁response ▁of ▁older ▁ped als . ▁According ▁to ▁the ▁Toy ota ▁recall ▁information , ▁it ▁is ▁this ▁device , ▁which ▁in ▁some ▁instances , ▁has ▁been ▁prevent ing ▁the ▁acceler ator ▁ped al ▁from ▁returning ▁to ▁zero . ▁To ▁quote ▁from ▁the ▁Toy ota ▁recall ▁FA Q : ▁ ▁The ▁issue ▁involves ▁a ▁fr iction ▁device ▁in ▁the ▁ped al ▁designed ▁to ▁provide ▁the ▁proper ▁“ fe el ” ▁by ▁adding ▁resistance ▁and ▁making ▁the ▁ped al ▁steady ▁and ▁stable . ▁This ▁fr iction ▁device ▁includes ▁a ▁“ sh oe ” ▁that ▁rub s ▁against ▁an ▁ad jo ining ▁surface ▁during ▁normal ▁ped al ▁operation . ▁Due ▁to ▁the ▁materials ▁used , ▁wear ▁and ▁environmental ▁conditions , ▁these ▁surfaces ▁may , ▁over ▁time , ▁begin ▁to ▁stick ▁and ▁release ▁instead ▁of ▁operating ▁smooth ly . ▁In ▁some ▁cases , ▁fr iction ▁could ▁increase ▁to ▁a ▁point ▁that ▁the ▁ped al ▁is ▁slow ▁to ▁return ▁to ▁the ▁idle ▁position ▁or , ▁in ▁rare ▁cases , ▁the ▁ped al ▁st icks , ▁leaving ▁the ▁thro tt le ▁partially ▁open . ▁ ▁According ▁to ▁Toy ota , ▁the ▁tact ile ▁response ▁fr iction ▁device ▁in ▁the ▁affected ▁Toy ota ▁electronic ▁acceler ator ▁ped als ▁sometimes ▁creates ▁too ▁much ▁fr iction . ▁This ▁excess ▁fr iction ▁either ▁slow s ▁the ▁ped al ▁return ▁or ▁completely ▁stops ▁it . ▁In ▁the ▁worst ▁case , ▁once ▁a ▁ped