All lights keep flashing and horn sounding
 

2003 ram 1500 with the 5.7 unlocked my drivers door with the key and now all lights keep flashing and horn sounds this truck does not have a skim system and never has so I know that is not the problem I have tried resetting the system and it still continues to do it at this point I have replaced the battery, and the pcm as I had decided that the pcm was the issue but apparently there is an issue somewhere else also I have checked the tipm Box and all wires look to good and have good connection any ideas?

Do you have a key FOB? Sounds like the alarm/panic.

Unfortunately I don’t have a key fob because that’s what I thought it was to and I tried resetting it with the key but that hasn’t got me anywhere

I’m still trying to work out this problem and I’m not getting anywhere with it is there a way to bypass the security alarm system I could care less if it works or not I really don’t need an alarm on the truck I’m sure there is a way to do this but I haven’t been able to map it out does anyone know how to just bypass the alarm system?

You can try reading all these posts. But I've never seen anyone successful..