I have the '09 Ram
I need to have Headlights on when doing my job & around here there are many highways that require them.
I went to the dealership & asked them to change it so that i would have DRLs
Up in Canada DRLs are required 24/7 & they have different firmware or software in those computers, they could not get my '09 to have DRLs.
Read your Owners manual, it should have DRLs in the Index
I believe i read that newer Rams can have it turned on, i just covered the little dome like thing on the center of the dash & up close to the windshield, it is an Ambient Light Sensor, it automatically turns on your lights when it gets dark, like when driving through a tunnel.