Priest called to road accident (5)
I believe the answer is:
prang
'road accident' is the definition.
(accident involving a car)
'priest called' is the wordplay.
'priest' becomes 'p' (ecclesiastical abbreviation).
'called' becomes 'rang' ('ring' can be a synonym of 'call').
'p'+'rang'='PRANG'
'to' is the link.
(Other definitions for prang that I've seen before include "Crash (a motor vehicle)" , "nasty collision" , "Car collision" , "damage" , "Possible argument with van" .)