First lets check the fuses # 13, 29, 23, 13, and 2 all which run the security system. Also, if the protocol becomes locked due it an open switch it can cause the system to lock. I would remove the battery cable from negative side, then touch it to the positive battery terminal for one minute it will discharge the capacitors and reboot the system (hard reboot). Here is a guide to check the fuses and the location of the fuses in your car with the security wiring diagrams so you can see how the system works:
Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
Images (Click to enlarge)
Wednesday, September 5th, 2018 AT 3:05 PM