Anti theft system

J CARL CHAFIN

MEMBER
2011 TOYOTA TACOMA
2.7L
4 CYL
2WD
AUTOMATIC
82,000 MILES

Had dead battery/would not jmp start/got new battery/wont start/horn honking been trying the millions of suggestions on Google to re set the security system. Actually started yesterday two times but not sure exactly what I did. Started to unlock trunk today/horn honking and no start since. Manual windows and door locks. Bought truck two years ago. Two sets of keys one with non functional fob/other plain.99% of time use plain key. Any suggestions would greatly appreciated!

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

First thing I would do is make sure the battery cables are tight and clean. here is a guide to help:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

If okay can I ask if the security light is flashing when you try and crank the engine over? If so here is a guide to help reset the system

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please run down these guides and report back.