▁ped als ▁are ▁made ▁by ▁a ▁different ▁supp lier ▁and ▁that ▁there ▁is ▁no ▁need ▁for ▁a ▁recall ▁of ▁Australian ▁made ▁vehicles . ▁ ▁History ▁of ▁acceler ator ▁ped al ▁design ▁ ▁Autom obile ▁acceler ator ▁ped als ▁have ▁histor ically ▁been ▁mechanical ▁assemb lies ▁which ▁link ▁the ▁ped al ▁to ▁the ▁engine ▁thro tt le ▁by ▁mechanical ▁link ages ▁or ▁a ▁Bow den ▁cable . ▁With ▁the ▁advent ▁of ▁electronic ▁thro tt le ▁control , ▁acceler ator ▁ped als ▁consist ▁of ▁a ▁spring - loaded ▁ped al ▁arm ▁connected ▁to ▁an ▁electronic ▁trans du cer . ▁This ▁trans du cer , ▁typically ▁a ▁pot enti ometer ▁or ▁Hall ▁effect ▁sensor , ▁converts ▁the ▁position ▁of ▁the ▁ped al ▁arm ▁to ▁an ▁electronic ▁signal ▁which ▁is ▁sent ▁to ▁an ▁electronic ▁control ▁unit ▁( EC U ). ▁ ▁The ▁older ▁mechan ically ▁designed ▁acceler ator ▁ped als ▁not ▁only ▁provided ▁a ▁spring ▁return , ▁but ▁the ▁mechanism ▁inher ently ▁provided ▁some ▁fr iction . ▁This ▁fr iction ▁introduced ▁mechanical ▁h yst er esis ▁into ▁the ▁ped al ▁force ▁versus ▁ped al ▁position ▁transfer ▁function . ▁Put ▁more ▁simply , ▁once ▁the ▁ped al ▁was ▁set ▁at ▁a ▁specific ▁position , ▁the ▁fr iction ▁would ▁help ▁keep ▁the ▁ped al ▁at ▁this ▁setting . ▁This ▁made ▁it ▁easier ▁for ▁the ▁driver ▁to ▁maintain ▁a ▁ped al ▁position . ▁For ▁example , ▁if ▁the ▁driver ' s ▁foot ▁is ▁slightly ▁j ost led ▁by ▁a ▁b ump ▁in ▁road , ▁the ▁acceler ator ▁ped al ▁would