Finicky fob and security light
Thread Starter
Teching In
Joined: Sep 2023
Posts: 21
Likes: 1
From: Hawaii
Finicky fob and security light Hey guys so I’ve done a little research about this security light. I’m going to just have tuner turn of vats when he tunes my car that should turn the light off right? Is this related thou. My fob is very finicky some times it works sometimes not. Yes I’ve changed the battery same thing. I sit there for 10 to 15 seconds hitting the button and all of the sudden it works. Related at all or should I just buy my self a new fob?
Joined: Nov 2003
Posts: 11,329
Likes: 346
From: Jacksonville, FL (originally from Toronto Canada)
As has been described a number of times, you can't program out VATS on a 4th generation f-body. VATS is part of the BCM which is not programmable. It does two things to protect the car from being stolen - it disables the fuel enable signal which the PCM relies on to start the fuel pump; and it disables the ground wire of the starter relay preventing the starter from turning. You can program the PCM to ignore the lack of a fuel enable signal, but that still leaves the starter relay problem. You can rewire the starter relay to use a different ground, but that still leaves the security light in the instrument cluster. No amount of programming will fix that although a piece of electrical tape can hide it.
No, the best thing to do is a VATS bypass using a few inexpensive resistors. It will solve all of these problems. There are numerous threads on this site about how to do a VATS bypass.
As far as your fob goes, it sounds like it may be on its last legs. You could try re-matching it to the system, but you're probably better off getting a new one (even better, get two so you have a spare).
No, the best thing to do is a VATS bypass using a few inexpensive resistors. It will solve all of these problems. There are numerous threads on this site about how to do a VATS bypass.
As far as your fob goes, it sounds like it may be on its last legs. You could try re-matching it to the system, but you're probably better off getting a new one (even better, get two so you have a spare).
