Pass on right holding vehicle's first switch (6)
I believe the answer is:
divert
'switch' is the definition.
(thesaurus)
'pass on right holding vehicle's first' is the wordplay.
'pass on' becomes 'die' (I've seen this before).
'right' becomes 'rt'.
'holding' indicates putting letters inside.
'first' indicates taking the first letters.
The initial letter of 'vehicle' is 'v'.
'die'+'rt'='diert'
'diert' going around 'v' is 'DIVERT'.
(Other definitions for divert that I've seen before include "Delight" , "Entertain; put off course" , "Entertain; reallocate" , "Amuse or cause to change direction" , "Deflect - amuse" .)