To reset the 2015 RAM 1500, please follow these instructions:
Driver Information Display (DID)
1. Without pushing the brake pedal, cycle the ignition to the ON/RUN position (do not start the engine).
2. Push and release the DOWN arrow button to scroll downward through the main menu to “ Vehicle Info.”
3. Push and release the RIGHT arrow button to access the “ Oil Life” screen.
4. Push and hold the RIGHT arrow button for one second to access the “ Oil Life Reset” screen.
5. Push and release the DOWN arrow button to select “ Yes,” then push and release the RIGHT arrow button to select reset of the Oil Life.
6. Push and release the Up arrow button to exit the DID screen.