Anti theft immobilizer system

Hi all , first time posting .
I own a 07 tundra. We recently accidentally pressed the light button which activates the immobilized system. I have tried putting the key in the ignition and leaving it in the “ ON” position for 15 minutes. The alarm continues to go off once I open the door again. I have also tried to remove the “ IMB” fuse from the fuse box under the hood. As well as disconnecting the battery. They all begin to trigger the alarm again. I don’t know what else to do . We only have one key currently .

 

Sounds like you have one of those aftermarket dealer installed alarms. Pull the kick panel off and trace the wiring to find the alarm brain.

either you can remove it all, or figure out the brand and look online now to disable it.

 

Thank you for your help , we were able to remove the fuses inside the panel from the cabin