My driver side door central locking seems to be confused and locks straight after unlocking, sometimes repeatedly. Also the driver side mirror doesn’t always retract properly and seems to be noisy and labouring when in operation. 
 

How do I fix this? Everything works but not all of the time, so I don’t think it’s a fuse. The fact that it does different things each time suggested an electronic failure, probably due to moisture. Am I looking at replacing the mirror and door lock actuator? Or is the fix something else. Is this a fix I could try myself?

Any advice would be really appreciated.  

 

Maybe check the wiring in the door shut harness, common fault on alot of cars, worth a free look for broken wires

13 hours ago, EdLey said:

Everything works but not all of the time, so I don’t think it’s a fuse.

 

Perfect diagnosis! Yep, if a fuse blows, it stops the supply of electricity, and the item doesn't work... 👍

1 hour ago, StephenFord said:

if a fuse blows, it stops the supply of electricity, and the item doesn't work

but what about indicator fuses ? - sometimes they work and sometimes they don't 🤣

3 hours ago, unofix said:

but what about indicator fuses ? - sometimes they work and sometimes they don't 🤣

I remember that joke (about the Irishman) from primary school days 🤣