Yes, it could be the fobs or the BCM needs to be replaced, I would start with a CAN scan, you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.
Here is a video to show you how:
https://youtu.be/u-4syLc-ifQ
Here is how to change out the BCM in the images below in case you need it. Also, I have included the security system wiring diagrams so you can see which fuses to test and how the system works. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
Images (Click to make bigger)
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Monday, June 5th, 2023 AT 10:36 AM