2009 Toyota Tacoma Disable Lock/Unlock Beep
7/08/12

Finally found a post on how to disable that annoying door lock/unlock beep on the truck:
  1. Open the driver's door, and insert the key into the ignition.
  2. Leave the door open.
  3. Remove the key from the ignition, and within 5 seconds, re-insert the key and then turn the ignition to ON.
  4. Wait at least 10 seconds, but less than 20 seconds. After waiting, press a button on the remote twice. Press the same button two times - don't press two different buttons. The system will acknowledge with a beep if you did it right.
via Toyota Nation Forum

Entry ID: 000514