Hey how are you
Unfortunately ,You will need a factory scanner or equivalent to run a diagnostic scan & retrieve fault codes from the alarm module in the vehicle and based on these fault codes we can pull up the troubleshoot
It could anti theft module, the receiver, hood switch , door switch, wiring etc.. , it could be number of reasons & there is Not a fuse or a relay or valet key to DISCONNECT , that you can pull out to disconnect it ,KEY WILL BE RECOGNIZED BY ANTI THEFT MODULE THEN ANTI THEFT SEND ECM A SIGNAL THAT IS RIGHT KEY THEN ECM INITIATE POWER TO STARTER AND FUEL ,ANOTHER WORDS IT IS MADE WHERE YOU CAN NOT BYPASS IT
If you do get it scanned post the fault code back here for me and I can help you further on it and be more accurate .
OR IF VEHICLE NOT USED LEAVE BATTERY DISCONNECTED.
NOW IN SOME CASES THE DOOR HOOD OR TRUNK SWITCHES WILL GET STUCK OPEN,TRY OPENING & CLOSING ALL MENTIONED FEW TIMES,GET SOME WD 40 SPRAY SWITCHES AND DO A MASTER RESET
Master reset Procedure
1- Disconnect Battery Cables ( Negative & Positive Cables )you can use any electrical wire as an extension if battery cables don't reach .
2- Hold cables Together for 60 secs ,then let go
3- Wait 30 minutes
4- Make sure all doors are closed
5- Reconnect battery Cables
6- Lock & unlock the vehicles using the key from driver door side (if you have a key fob with no blade key, just lock & unlock using the key fob buttons)
7- Enter the vehicle and attempt to start
NOW IF THAT DO NOT WORK SCAN IT OR KEEP BATTERY CABLE OFF WHEN STORED
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