My 2018 Chrysler 300 has issues with key fobs. Sometimes the key fob works great to start the car and other times I have to push the start button with the fob. Sometimes the screen say fob has left the vehicle. No rhyme or reason as to when this happens.
Yesterday I started the car just fine with fob on dash, backed the car out of the garage and the screen said key fob has left the vehicle. I drove a bit, stopped the car, turned off the engine and car started just fine with fob on dash....no messages. Gpt out of the car, tried to lock doors with fob...didn't work.

I have 2 fobs and both have the same issues at times. YES I have changed the batteries....same results.

Any ideas?