central locking relays

[benstone]

my remote central locking hasn't worked since i have had it, and when my brother had it the remote central locking was a bit on and off. But recently i was looking at relays thanks to another problem, and notice there is one for central locking. Not sure if there is a specific one for the remote, but the normal central locking from the button works. So i just wanted to know if the problem could be with relays?
thanks

 

[BRUN]

not sure which it is, but are there not another 2 next to it which are the same part number ?

if they are then you could try one of the others in its place to see if it works