Multi-Displacement System (MDS) (If Equipped) — 5.7L Engine Only

This feature offers improved fuel economy by shutting off four of the engine’s eight cylinders during light load and cruise conditions. The system is automatic with no driver inputs or additional driving skills required.

NOTE:
The MDS system may take some time to return to full functionality after a battery disconnect.

    See also:

    Clearing A Flooded Engine (Using ENGINE START/STOP Button)
    If the engine fails to start after you have followed the “Normal Starting” or “Extreme Cold Weather procedures, it may be flooded. To clear any excess fuel, press and hold the brake pedal, ...

    Wind Buffeting
    Wind buffeting can be described as the perception of pressure on the ears or a helicopter-type sound in the ears. Your vehicle may exhibit wind buffeting with the windows down, or the sunroof (i ...

    Emergency Assistance
    If you are in an emergency and the mobile phone is reachable: • Pick up the phone and manually dial the emergency number for your area. If the phone is not reachable and the Uconnect™ Phone ...