My 2002 Vogue SE has never had working remote central locking since the last owner bought the car. I've got 2 remote with the car and these both work, the lights on both come on when you press the keys but nothing happens when you try and unlock the car. I've tried the usual process of re-sync'ing the key to no avail.
The other thing I've noticed is that none of the front speakers on the car work either. I wondered if this was an amplifier fault initially but I'm now wondering if everything is related.
I've checked all the fuses in the side of the BECM and they're all ok, I've checked the antenna behind the rear seat is connected but nothing seems to be making any difference. When checking the remote locking with Testbook it tells you to press a button on the remote but the test fails.
Has anybody got any ideas where I'd be best going from here? I don't mind doing some digging to try and sort it but am unsure of the best route to take.