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

Jeep Grand Cherokee / Jeep Grand Cherokee Owners Manual / Starting and operating / 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:

    Tire Spinning
    When stuck in mud, sand, snow, or ice conditions, do not spin your vehicle’s wheels above 30 mph (48 km/h). WARNING! Fast spinning tires can be dangerous. Forces generated by excessive wheel spe ...

    In The 50 United States And Washington, D.C.
    If you believe that your vehicle has a defect that could cause a crash or cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in additio ...

    Mute/Un-Mute (Mute OFF)
    When you mute the Uconnect™ Phone, you will still be able to hear the conversation coming from the other party, but the other party will not be able to hear you. In order to mute the Uconnect™ ...