CLS 550 (219.372) V8-5.5L (273.960) (2007)
Seat Belt Tensioner: Description and Operation
GF91.40-P-4020TX Front Reversible Emergency Tensioning Retractor, Component Description
- as of 1.6.06
- except CODE (494) USA version
- except CODE (498) Japan version
- as of 1.7.06
- with CODE (494) USA version
- with CODE (498) Japan version
Component Identification
Location
The reversible emergency tensioning retractors are located in the respective B-pillar.
Task
The reversible emergency tensioning retractors perform the following tasks:
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Reducing the existing seat belt slack
^
Fixing the occupants in position in the seats
^
Retain seat belt force
^
Release seat belt force
The reversible emergency tensioning retractors are connected via the Controller Area Network Bus class C (engine compartment) (CAN-C) to the ESP
control unit (N47-5), which transmits the signal for triggering the reversible emergency tensioning retractors.