A little while ago my drivers side door stopped unlocking / unlocking easily with the key. It progressively worse until no matter how much back and worth I did it just wouldn't trigger the lock / central locking system. So I used the passenger door for about 8 months.
Now when I unlock from the passenger door they all unlock, but when I get in I can hear the pump in the boot pretty loudly run on for about a minute. Turning off etc doesn't seem to stop it. Also when I lock the car the driver knob didn't go down on its own and I had to put key in driver door and turn it, even though that alone would not open the door or seem to catch anything.
Hopefully unrelated. the day before these problems I jump started a car.
Any ideas what it may be? and is it serviceable?