Phoned after parking accident (5)
I believe the answer is:
prang
'accident' is the definition.
(I know that prang is a type of crash)
'phoned after parking' is the wordplay.
'phoned' becomes 'rang' ('ring' can be a synonym of 'phone').
'after' says to put letters next to each other.
'parking' becomes 'p' (abbreviation on road signs).
'rang' put after 'p' is 'PRANG'.
(Other definitions for prang that I've seen before include "Minor shunt" , "Crash (informal)" , "Crash (a car, aircraft) (colloq.)" , "Popularly, a motoring contretemps" , "damage" .)