I'm not sure what your "daylight running lights" function is myself. Couldn't you just turn on the parking lights or is it something different and why was it not working before if you needed it?
As to the charges, it's ridiculous to me, but then it isn't my business to run..I installed a set of fog lights on mine and they wanted $105 or so to turn 'em on with the scanner..I mean plug it in and hit "enable" on the programming switch..I passed..
I went home and used a couple of relays off of the wiring harness and made 'em all work via relay. I did install a toggle inside to keep them off in any occasion if I just don't want them on..Turn on parking lights and fogs light up, normal working with the headlights and hit the high beam and they go off..Took me about two hours to wire it all up. Cost me about $15..