HSA Activation Criteria

The following criteria must be met in order for HSA to activate:
• Vehicle must be stopped
• Vehicle must be on an 8% or greater incline (3% for manual transmission equipped vehicles)
• Gear selection matches vehicle uphill direction (i.e., vehicle facing uphill is in forward gear; vehicle backing uphill is in REVERSE gear).

WARNING!
There may be situations on minor hills (i.e., less than 8%), with a loaded vehicle, or while pulling a trailer where the system will not activate and slight rolling may occur, which could cause a collision with another vehicle or object. Always remember the driver is responsible for braking the vehicle.

The system will only work if the intended direction of the vehicle and vehicle gear match. For example, if the intended direction is forward up a hill and the vehicle is in DRIVE (automatic transmission equipped vehicle), and the activation criteria are met, HSA will activate.

    See also:

    Parksense System Usage Precautions
    NOTE: • Ensure that the rear bumper is free of snow, ice, mud, dirt and debris to keep the ParkSense system operating properly. • Jackhammers, large trucks, and other vibrations could affe ...

    Automatic Locking Retractor Mode (ALR) — If Equipped
    In this mode, the shoulder belt is automatically prelocked. The belt will still retract to remove any slack in the shoulder belt. The Automatic Locking Mode is available on all passenger-seating ...

    The Inside
    The previous-generation Grand Cherokee lacked an interior to match its price, but the all-new cabin in the 2011 model uses premium materials and a less blocky design to give the SUV a more luxurio ...