Memory Function for the Rear-compartment Comfort Seat

The memory function is available for both the left and right rear passenger seat and can be activated from terminal 30B ON. The memory buttons are connected to the junction box electronics via the LIN bus.

The seat module of the seat concerned is responsible for the memory function. The junction box electronics request the status of the memory buttons via the LIN bus on a cyclical basis. To enable the seat module to read out the status of the memory buttons, the button status must be transferred on several bus systems. The bus systems are:

• LIN bus (JB > buttons)
• LIN bus (buttons > JB)
• K-CAN2 (JB > ZGM)
• K-CAN (ZGM > SM).

Press the memory button to prepare for storing the memory position. The seat module sends the request to switch on the function indicator. From the function indicator, for example, the customer can recognize that the memory function is ready for storing.

Pressing button "1" or "2" assigns the current position of the driver's seat to the pressed button. One memory position is available for each of the buttons "1" and "2".

The data is assigned to the current ID transmitter as part of the Personal Profile, when the memory position is stored.

If the seat module detects an obstructed adjustment motor, then memory adjustments to the motor remain disabled until the motor is no longer obstructed.

Fig 1: Memory Buttons In Armrests Of F01/F02 Driver's Side

Courtesy of BMW OF NORTH AMERICA, INC.