Door Lock question

2000 SR5 Tacoma

I got the truck a few weeks ago. Went to go lock the doors this weekend and it wouldn't let me. Every time I hit "lock", it unlocks 1 second later. I can't lock them either from the exterior with the key. The only thing I can think of is that the truck got a new ignition switch right before I bought it and maybe the anti-theft is screwed up? Help me please.

Tried searching and found nothing.

Thanks.

 

Mine will do that if the keys are in the ignition and turned to 'on'. I can't say 100% for sure, but I'd be willing to bet that the ignition switch is screwed up or installed incorrectly.

 

Well this sucks