When I walk away from my 2000 mustang the alarm arms itself automatically. This is great except when I'm coming back 20 times or I have to leave it for the car wash, tire shop, or valet and they are clueless that you have to disarm it in order to start it! very annoying, anyone know the trick to turning that feature off? thanks

 

Is it stock? I wasn't aware it had an "auto-arm" feature... How long before it arms each time?