I have a 2016 TItan XD Platinum Reserve. After a recent oil service I found out my Daytime Running Lights do not turn off after turning off that night and locking the doors. I've owned it 3 years and the whole time my 12V feed to the trailer has not worked but this is a first new electrical issue. I paid Nissan to check it and they said maybe the IPDM unit in the front needs replaced and I have done that and it did not resolve the issue. Nissan would like a few hundred more to experiment and see if they can guess some more reasons but I prefer not to dump my money into their learning ways to fix their own non-covered warranty issues. Let me know if anyone has experienced this and fixed it accordingly and I'll update if I figure it out. The truck works fine and to avoid people always telling me I left my lights on I unplug the lights every night which of course is not the best feel for having bought such a nice truck.