How do I reset the alarm system on a 2001 toyota tundra without a remote. I used my key to unlock the door on my 2001 toyota tundra when I opened the door the alarm went off. I put the key in the ignition turned to the on position then turned it back to acc position & the alarm went off but the truck still wouldn't start. I opened the door & the alarm went off again. So I tried this several times with the same result. Can someone please help?