The alarm manual used to be in the Downloads section, but the link has been broken for a while. (Ha ha, the manual calls it a "buzzer"!)

GET INTO PROGRAMMING MODE
1) Sit in driver's seat with all doors closed

2) Press & release remote control top button to lock the doors, then once again to unlock the driver's door only.

3) Open the driver's door only

4) Insert the key into the ignition and turn it to ON (not ACC) 5 times within a 10 second period.
(LOCK --> ON --> OFF --> ON --> OFF --> ON --> OFF --> ON --> OFF --> ON)
* The "buzzer" chirps once.
* The marker lights & parking lights flash once.
* The status indicator LED will turn on for 30 seconds.

Within the 30 seconds you must select the mode:

BUZZER OFF
A) Close the driver's door
B) Turn the ignition switch to "OFF"
* The "buzzer" chirps once.
* The marker lights & parking lights flash once.

Change your mind later?

BUZZER ON
A) Close the driver's door, then open and close it again.
B) Turn the ignition switch to "OFF"
* The "buzzer" chirps twice.
* The marker lights & parking lights flash twice.