Passenger-assist Function

The passenger-assist function is available from terminal 30B ON. The seat module on the driver's side alone is responsible for the passenger-assist Function. The button status is read in by the footwell module via the LIN bus and sent via the K-CAN2. The central gateway module transfers the signal to the relevant bus system.

As soon as the driver's seat module SMFA detects an operation request from the passenger-assist function button, it prepares the front-passenger seat module for an adjustment request via the K-CAN.

When the seat adjustment switch on the driver's side is now activated, the seat module on the passenger's side executes the request.

The K-CAN is used for communication between the seat modules. This allows all seat adjustment functions for the front-passenger seat and the memory function to be operated from the driver's seat. The passenger-assist function is available for the memory seat and the multifunction seat.

The seat module sends the request via the K-CAN to the function indicator for the activated passenger-assist function button in order to switch on the LED in the button. The request must be transferred on more than one bus system.

Fig 1: Signal Path Of Passenger-Assist Function In F01/F02 Front Seats

Courtesy of BMW OF NORTH AMERICA, INC.