Welcome, I'm Chris (aka Moose). Experts aren't employees / agents of Just Answer. We are independent service providers using the Site to sell their Expert knowledge to Customers. I strive to provide EXCELLENT 5 STAR service, let me know what's needed from me so your pleased.
It is rare for an OEM alarm system (PATS) to not go off with the key in the run position. Are you sure the battery voltage is good and there is not an aftermarket alarm, immobilizer, or remote start on the vehicle causing this issue?
With the key in the run position, has the instrument cluster powered up and what is the check engine light and theft light doing?
Thanks for asking your question and letting me try to help you.
If your confused on why or how to rate me, let me know.
I'm only paid from the deposit you've made when you rate 3,4, or 5 stars.
Follow up/Reply as many times as needed before or after rating.