The Chrysler 300 is a full-size American saloon with bold, imposing proportions and a comfortable, rear-drive cruising character. Its service-reminder system monitors mileage and time, and the oil change indicator needs resetting by hand once the work is done, or it keeps flagging on the cluster. Owners of the 300 typically perform an oil service reset, clear the maintenance message, run a TPMS reset to re-learn tyre pressures and reinitialise the electric windows after a battery disconnect. Because the menus differ between 300 generations, we organise the instructions by generation so you follow the right path. Choose your 300’s generation from the list below to open the reset procedures that apply to your particular car.