Nissan Micra 04. The central locking is making a noise

most likely cause is the door lock in the drivers door ,something sticking or the electronics packed up

Put your ear to the door and listen to where the grinding/buzzing noise is coming from when you lock the door, sometimes it maybe more than one door! The door it's coming from need a door actuator, common fault with the k12 micra's, which i'm guessing this is a k12 model!

You may have to have it flashed at the Nissan dealership, they can reprogram the fob.

i'd say 2 completely different issues,did key work when you bought vehicle,i'd say ones a replacement and they may not have coded it to immobiliser,horn may be horn itself ,but often the moving parts behind steering wheel fail,have you checked the fuse?the relay can often fail to

Try the following:

"KEY FOB PROGRAMMING
NISSAN
SYSTEM DESCRIPTION
The Central Door locking is controlled by the Multi-Remote Control system which controls
the door locking, door super locking and hazard reminder. When the doors are locked and
unlocked the unit flashes the hazard lights once for lock and twice for unlock.
A maximum of four remote controls are allowed to be programmed.
ALMERA
ALMERA TINO
PRIMERA
MAXIMA
MICRA
SERENA
VANETTE CARGO
TERANO II
Ensure all the doors have been unlocked, either by using a good transponder key or remote
control plip key.
Procedure
1. Turn the ignition switch from Position 0 to ON 6 times within 10 seconds.
2. Then turn ignition switch to OFF position. Leave key in ignition switch.
3. After 2 seconds, the system will enter programming mode and will flash the warning
lights twice.
4. Press and HOLD the unlock button on the Plip.
5. While pressing the unlock button, press the lock button 3 times.
6. Release the unlock button.
7. The warning lights will flash once to indicate successful programming.
8. Repeat procedure 4 to 7 for up to 4 plip key?s.
9. When completed turn ignition ON, and the warning lights will flash 2 times.
10. Remove key, and check all plip key?s for operation.
NOTE : The programming mode will stop when either the ignition is switch ON, 4 plip keys
have been programmed or no input signal either from the switch or plip keys has been received
for 120 seconds."

Hi there, this is a very common fault, you need to replace the drivers door actuator to stop the noise, ive done loads of these. hope this helps.

Hope you are not still locked out. Our Micra has a secret keyhole in the passenger door handle, you have to flick out the little plastic cover. Good luck!