Longman Dictionary of Contemporary English
central locking
noun
EXAMPLES FROM CORPUS
▪ Equipment looks good with central locking and power steering included.
▪ For the same price - around nine grand - standard equipment is better, including remote-control central locking and a sunroof.
▪ Specification is high - remote control central locking and electric windows.
▪ Standard equipment includes an electric sunroof, electric front windows, remote control central locking and a 60/40 split folding rear seat.
▪ The central locking clunked, they both got in.
▪ The Carina Xi retains central locking and power assisted steering..
▪ The model included standard goodies such as electric windows and mirrors all round, power steering, central locking and catalytic convertor.
▪ They share central locking and a stereo complete with electric aerial.
Wiktionary
central locking
n. A locking system in vehicles, where locks to all the doors can be locked and unlocked simultaneously.
Usage examples of "central locking".
Sarah heard the clunk of the central locking and started moving toward the car as the woman got out.
Thorpe exited, then there was a clunk as Boyle engaged the central locking.
Trying not to make a sudden movement, I slipped my hand round to feel for the button on the top edge of the door - Jim would have tripped out the central locking when he got out to move the tree.
I clicked the central locking while Poudenhaut was moving round the front of the car.