Nissan Repair: Nissan Terrano faulty alarm?, nissan terrano 2, interior illumination

Question
Hi, I have just purchased a nissan Terrano 2.7 TD SE 1998. The problem is that the key fob does not work and I lock the car with the key, but as soon as I unlock the doors with the key the alarm goes of for a duration of time approx 20secs, I had a new battery fitted to the car and I also changed the batteries in the key fob, but this still does not work. any idea how I stop the alarm going of every time I unlock the car, even if it means that I may have to disconnect the alarm.
Thanks.

Answer
Julian,

Try reprogramming the keyfob.

To reprogram (enter new ID) key fob (keyless remote controller) follow the steps.
1. Close all doors and lock all doors
2. Insert and remove the key from the ignition key cylinder more than six times within 10 seconds.
   (The hazard warning lamp will then flash.)
   NOTE:
   Key should be withdrawn from ignition key cylinder completely each time.
   NOTE:
   Do not rush the insertion/removal key cycling process. The side
   marker/tail/license lamps and interior illumination will flash twice when this step is
   accurately completed.
3.  Insert key on ignition key cylinder and turn ignition key switch to "AAC" position
    At this time, the new ID code is entered and original (previous) ID codes are erase.
4.  Press any button on the new remote controller once. (The hazard warning lamp will then flash)
    NOTE:
    Do not press the button more than one time in the above step. If the button
    is pressed more than one time, the programming procedure will not be successful.
    The side marker/tail/license lamps and interior illumination will flash twice when this
    step is accurately completed and programming is successful.        
               If there is only one remote controller skip  step 5.
                5. Additional  ID code entry
                Release the door lock, then lock again with door lock/unlock switch
                (In power window main switch)
6.  Remove key from ignition
7.  Unlock driver side door, open driver side door and then close the door. (END)
    NOTE:
    If you need to activate more than two additional new remote controllers, repeat
    the procedure on step 5 "Additional ID code entry" for each new remote controller.
    NOTE:
    Entry of maximum four ID codes is allowed and any attempt to enter more will be ignore.

If this does not work take the door panel off and check to see if the wires to the drivers door key are broken or grounding.  The key should turn the alarm off when you unlock the door.  So, if the keyfob reprogramming does not do the trick remove the door panel and check the wires to the lock.