The battery might be fully charged but it may be getting weak, and the sensor can tell this, let's try a battery load test, please follow this guide or remove the battery and take it to an auto parts store for testing:
If the battery tests good let's run a CAN scan to see what codes are stored. 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:
Also, let's check the fuses, here is guide that can help and I have included the starter wiring diagrams so you can see how the system works and which fuses to test, also there are two starter relays I would try to swap out to see if that makes a difference.
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)
Monday, September 18th, 2023 AT 5:02 PM