Door Locks

I have the following problem on the lock system of my Ford Focus SW 2000 (Station Wagon 1.6 Zetec Guia). The car has an alarm system from
1-When I try to lock the doors with the remote control they lock and unlock
2-The same when I try to lock the car with the key on the drivers door
To lock the car I have to do the following:
1-Lock from inside the passenger door and then use the remote control for the other 3 doors
2-Lock with the key on passenger door. In this case I can close the 4 doors at once
The remove control is also hard to use. I have to push the lock button a few times to lock the doors. I disconnected the battery and the remote control worked fine for a couple of days. Any idea where the problem is?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.