Ukuvikela nokulawula isekethe ekulayisheni ngokweqile kanye nesekethe emfishane, Ekwakheni ukufakwa-njengezindlu, amahhovisi, indawo yezentengiselwano, isistimu ye-motor(D curve) nokufakwa kwezimboni-ukushintsha, ukulawula, ukuvikela nokulawula amasekhethi kagesi.Futhi ku-switch gear panel, isicelo sesitimela nesolwandle.