GF91.40-P-1001TX Positioning the Front Passenger Seat, Function

GF91.40-P-1001TX Positioning The Front Passenger Seat, Function
- as of 1.6.06
- except CODE (494) USA version
- except CODE (498) Japan version
- except CODE (242) Electrically adjustable front passenger seat with memory
- as of 1.7.06
- with CODE (494) USA version
- with CODE (498) Japan version
- with CODE (242) Electrically adjustable front passenger seat with memory

Function requirements
^ Front passenger seat occupied recognized
^ Front passenger seat set to an unfavorable position (e.g., park position)
^ Front passenger seat normalized
^ PRE-SAFE has been activated

Function
Positioning of the front passenger seat is used to move the front passenger into a favorable position in the event of an imminent impact. In this position, the conventional restraint systems can provide the best protective effect possible.

The front passenger front seat adjustment control unit with memory (N32/2) coordinates the adjustment of the front passenger seat.

The automatic adjustment of the front passenger seat can be interrupted at any time by operating the right front seat adjustment switch group (S92/2). If a PRE-SAFE situation continues to be present, the front passenger seat is adjusted again via PRE-SAFE after the manual adjustment has been completed.
The adjustment time takes until:
- the target area has been reached (seat in optimum position)
- the impact occurs
- the PRE-SAFE situation ends

The front passenger seat does not automatically return into the position before the PRE-SAFE situation, but has to be adjusted via the seat adjustment switch group if necessary.

The seat adjustment takes place depending upon whether the front passenger is or is not buckled up.

The status of the front passenger seat belt buckle restraint systems switch (S68/4) is transmitted by the restraint systems control unit (N2/7) via the Controller Area Network bus class B (interior) (CAN-B) and via the central gateway control unit (N93) to the front passenger front seat adjustment control unit with memory.

Seat adjustment if the occupants are buckled up
Dependent upon how the front passenger seat is set the:
- backrest and the seat cushion inclination is adjusted
- seat height is optimized
- the entire seat is moved on the longitudinal adjustment axis

Seat adjustment if the occupants are not buckled up
The system moves the seat into a position that is suitable for situations that are unfavorable with regard to safety technology.

The PRE-SAFE function of the front passenger seat can be switched off via STAR DIAGNOSIS.

Seat occupied recognition sensor
The seat occupied recognition of the front passenger seat takes place:
- via the front passenger seat occupied recognition sensor (B41/1) (as of 1.6.05 without code (U18) Automatic child seat recognition (ACSR [AKSE]))
- via the front passenger seat occupied and child seat recognition sensor (B48) (up to 31.5.05 and as of 1.6.05 with code (U18) Automatic child seat recognition (ACSR [AKSE]))
- via the WSS (Weight Sensing System) sensors (B48/11, B48/12, B48/13, B48/14) and the WSS (Weight Sensing System) control unit (N2/13) (with (United States Of America) as of 1.7.06)