why is my truck messed up

Question

When i bought my 2017 ram 1500 it came with the remote start and i loved it never had an issue recently my fob died and i wasn't quick to change it it didn't bother me finally today i went and bought a tiny screw driver and changed the battery it worked and it was fine. it wasn't until my sister opened the door that i noticed that if i had my truck on and any of the doors were opened then my truck would turn off and it never did it before. how do i fix it?

Answer 1

Is this while the vehicle is remote started?

Answer 2

Once remote started, if unlock is not detected from a remote isnot detected, the vehicle will shut down on door open.