Seat Satellite, Rear (SSH)

Seat Satellite, Rear (SSH)

The rear seat satellite is installed if the vehicle is ordered with rear side airbags (SA 261). The special equipment also includes the Advanced HPS (AHPS) for rear seat passengers, but these are triggered by the SASL/SASR. The rear seat satellite is fitted beneath the rear seat cushion in the middle area.




The SSH contains no acceleration sensors but does evaluate the rear seat occupancy (SBE) sensors.

The seat satellite, rear is responsible for deploying the left/right rear passenger airbags and seatbelt tensioners. Additionally if the vehicle is equipped with basic seats the SSH is responsible for controlling the electric rear head restraints.

The satellite SSH is connected to the SIM via the byteflight. The power supply of the satellites is also from the SIM and it is buffered by the memory backup capacitor. In sleep mode of the byteflight, the power supply of the SSH is deactivated by the SIM. The watchdog function is run by the SIM.

The power supply for the head restraint adjustment is unaffected by this.







NOTE: Operation of the head restraints on vehicles equipped with rear Comfort seats is carried out by the seat modules.


Rear Head Restraints

The rear head restraints are moved out automatically by an electric motor if the seat occupation detection detects an occupant and KL R is on.

The head restraint is returned to its lowest position when KL R is switched off or an empty seat is detected.