Positioning the front passenger seat, function - GF91.40-P-1001T
MODEL 211.0/2 as of 1.6.06 except CODE (494) USA version except CODE (498) Japan version with CODE (242) Electrically adjustable front passenger seat with memory
MODEL 211.0/2 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.
Adjustment of the front passenger seat is coordinated by the front passenger front seat adjustment control unit with memory (N32/2).
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 starts
- the PRE-SAFE situation ends
The front passenger seat does not automatically return into the position before the PRE-SAFE situation, but rather it has to be adjusted using the seat adjustment switch group.
Seat adjustment takes place depending upon whether the front passenger is wearing a seat belt or not.
The status of the front passenger seat belt buckle restraint systems switch (S68/4) is forwarded from the restraint systems control unit (N2/7) over the Controller Area Network bus Class B (interior) (CAN-B) and over 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:
- Over the front passenger seat occupied recognition sensor (B41/1) (not
and as from 1.6.05 without code (U18) Automatic child seat recognition (ACSR) [AKSE])
- Over the front passenger seat occupied and child seat recognition sensor (B48) (up to 18.2.04 for
- Over the WSS (Weight Sensing System) sensors (B48/11, B48/12, B48/13, B48/14) and the WSS (Weight Sensing System) control unit (N2/13) (for
| Front passenger seat occupied recognition sensor, component description | B41/1 Without code (494) USA version and as from 1.6.05 without code (U18) Automatic child seat recognition (ACSR) [AKSE] | GF91.60-P-4110T |
| Seat occupied recognition with automatic child seat recognition, component description | B48 Up to 18.2.04 with code (494) USA version, up to 31.5.05 without code (494) USA version, as from 1.6.05 with code (U18) Automatic child seat recognition (ACSR) [AKSE] | GF91.60-P-4035T |
| WSS sensor (Weight Sensing System), component description | B48/11, B48/12, B48/13, B48/14 as of 19.2.04 with CODE (494) USA version | GF91.60-P-4036T |
| Supplemental restraint systems control unit, location/task/design | N2/7 | GF91.60-P-4018T |
| WSS (Weight Sensing System) control unit, component description | N2/13 as of 19.2.04 with CODE (494) USA version | GF91.60-P-4046T |
| Right front seat adjustment control unit, with memory location/task | N32/2 | GF91.29-P-2107T |
| Central gateway control unit, location/task | N93 | GF00.19-P-4100T |
| Seat belt buckle switch, component description | S68/3, S68/4 | GF91.60-P-4045T |