2004 Xl single cab does anybody know what this button is for I hold it for 3 seconds and horn beeps twice

 

That’s aftermarket of some sort. Because the horn beeps, I’m guessing alarm system of some sort? Do you have a remote starter or something?

 

no remote start but it did come with after market power windows and I was looking if it had keyless entry so I could buy a remote for it

 

Gonna have to do some wire tracing. That aftermarket for sure. I'd be curious to see what it goes to. Always like seeing everyone's mods!

 

well it turns out it has an omega car alarm system
does anybody know where I could get a remote for it I know it has the power door locks module

 

That button is probably the Valet switch.

 

Type "Omega Car Alarm" into Google and the first result is this: http://www.caralarm.com/en/

They have a transmitters page here: http://www.voxxelectronics.com/transmitters/

 

I just discovered the exact same button in my 2006 (after 10 years). I have an aftermarket remote start. Button doesnt appear to do anything.

 

I know exactly what that is.. it's a Dickfer! <sarc>

What's a 'Dickfer' you ask? Well.. you pee with it.. ROFL!
Sorry - had to do it!

I agree with others. It's aftermarket or golden-screwdriver type of work as we call it in the CB radio repair world...

 

I pulled the dash apart and it's connected to an APS686 remote start. Looking at the installation manual, it appears to be a switch used when programming the unit's features.