Memory Seat System

WARNING: This page is about a different car, the 2022 Chrysler Voyager and 2022 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.

An electronic memory seat system is available on certain models. The memory system is able to store and recall all driver side power seat positions, outside mirror positions and power adjustable pedal positions. The system can be set for two different drivers. On vehicles with a factory installed radio connected to the Controller Area Network (CAN) data bus network, the memory system is also able to store and recall up to twelve radio station presets (six AM and six FM), for two drivers. The memory system will also store and recall the last station listened to for each driver, even if it is not one of the twelve preset stations.

Vehicles equipped with the memory seat system can be identified by the memory seat switch, located in the interior driver door handle bezel. The memory system will automatically recall all driver side power seat positions, outside mirror positions and power adjustable pedal position settings, when a button of the memory switch is pressed, or when the doors are unlocked using a Remote Keyless Entry (RKE) transmitter (if enabled).

The memory system has an "Easy Entry and /Exit" feature that provides the driver with more room to enter or exit the vehicle by automatically moving the driver seat rearward 55 millimeters (2.1 inches), or to the end of its travel, whichever occurs first. This is also a customer programmable feature of the Electronic Vehicle Information Center (EVIC).

The memory system also has a "Tilt in Reverse" feature that tilts the outside mirrors down a fixed, incremental angle when the vehicle is shifted into REVERSE with the ignition switch in the Run position. This feature provides the customer with a better view of the ground and vehicle in the area of the rear tires when backing up. The mirrors move back to their previous position when the vehicle is shifted out of REVERSE.

The memory system includes the following components:

Memory Switch - located in the interior driver door handle bezel.
Memory Seat Module (MSM) - located underneath both driver front and passenger front seats. Controls the power drivers seat, power driver mirror and adjustable pedals, when equipped.
Driver Door Module (DDM) - located in the driver door, behind the trim panel.
Passenger Door Module (PDM) - located in the passenger door, behind the trim panel.
Hall Effect Sensors - Driver Seat - located in each of the power seat track motors. Are used to provide reference signal to the memory seat module to inform the module of the position of the seat cushion and seat back. Are not serviced separately.
Hall Effect Sensors - Driver Mirror - located on the outside driver mirror motors. Is used to provide a reference signal to the memory seat module to inform the module of the position of the mirror glass. Are not serviced separately.
Hall Effect Sensor - Adjustable Pedals - located on the adjustable pedal motor, when equipped. Is used to provide a reference signal to the memory seat module to inform the module of the position of the pedals. Is not serviced separately.

Certain functions and features of the memory system rely upon resources shared with other electronic modules in the vehicle over the Controller Area Network (CAN) data bus. The CAN bus allows the sharing of sensor information. This helps to reduce wire harness complexity, internal controller hardware, and component sensor current loads. At the same time, this system provides increased reliability, enhanced diagnostics, and allows the addition of many new feature capabilities. A scan tool is required for proper diagnostics of the electronic components and the CAN bus.