Grand Cherokee 2WD V6-3.7L (2008)
Memory Positioning Module: Description and Operation
Memory Mirror Module - Description
DESCRIPTION
There are two Memory Mirror Modules (these are sometimes referred to as Driver Door Modules (DDM) and Passenger Door Modules (PDM)) within
the memory system. One is located in the driver door and one in the passenger door, just behind the door trim panel. The modules send a bus message to
the power mirrors to adjust them to a preset position when a memory recall request has been made.
The memory mirror modules also act as an interface in each door for electrical functions (door lock switches and door ajar switches).
The Memory System makes available for immediate recall personalized preferences of the following:
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Automatic temperature control settings.
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Outside mirror positions.
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Power adjustable brake and accelerator pedal position.
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Power seat horizontal, vertical, recliner, and easy entry positions.
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Radio push button station selections.
The major components of the Memory System are:
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Memory Selector Switch - located in the driver door trim panel.
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Driver Memory Mirror Module (DMMM) - located in the driver door, behind the trim panel.
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Passenger Memory Mirror Module (PMMM) - located in the passenger door, behind the trim panel.
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Sentry Key Remote Entry Module (SKREEM) - located at ignition key cylinder.
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Remote Keyless Entry (RKE) Transmitter - located with ignition key.
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Memory Seat Module (MSM) - located underneath the driver seat and also controls the Adjustable Pedals.
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Radio - located in the instrument panel center stack.
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Automatic Temperature Control (ATC) - located in the instrument panel center stack.
The memory recall is available at the press of a button on the drivers door trim panel or, by using the Remote Keyless Entry (RKE) transmitter if it is
programmed to trigger the recall.
Radio settings include up to 20 push button presets (10 AM and 10 FM), and the last station selection, even if it is not one of the 20 preset selections.
