Removal and installation of seat belt and tensioner - ra91001400630x(0630)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Model 140

Operation No. of Operation Texts and Work Units, Standard

Texts and Flat Rates

Fig 1: Identifying Seat Belt With Seat Belt Tensioner Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

REMOVAL

Seat	adjust forward.
Floor mat in front passenger's foot space	fold back.
Front passenger's foot rest	unscrew and remove upwards.
Ignition key	turn to "0" position.
Negative battery terminal	disconnect.
Seat belt tensioner test connection (X11/7)	disconnect.
Airbag plug connector for vehicles with airbag test coupling (X11/13)	detach.
Front and rear entry rail	remove.
Facing on center pillar	remove.
2 screws (1) at bottom of center pillar facing	unscrew.
Clips on center pillar facing (3)	press in with screwdriver (arrow) and remove facing.
Screw (4) on seat belt bracket	unscrew.
Nut (5) on seat belt guide bracket	unscrew.
Screw (6) on seat belt automatic rewinder	unscrew.
Plug connector on seat belt tensioner ignition capsule (R12/1, R12/2) as well as seat belt comfort facility	detach.
Automatic seat belt rewinder	press downwards and remove from center pillar.

Installation Note

When installing the seat belt tensioner, pay attention to the different designs (left and right) and make sure that parts are correctly positioned in locks.

NOTE: Noises caused by the automatic rewinding device when the seat belt is being rewound are functional. In the event of complaint, excessive noises can only be prevented by replacing the seat belt. In no case may oil or grease be used to prevent noises.

The automatic rewind device must not be dismantled as accidents may be caused by the pretensioned springs. Automatic rewind devices which have been opened are no longer covered by the terms of the guarantee.

Special Tools

Fig 2: Identifying Special Tools (124 589 00 21 00 54)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Special Tools (140 589 11 63 00 91)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

STANDARD TESTING DEVICE

Multimeter

e.g. Sun, DMM-5 or Avometer 2003 Fluke 23

After installation of the seat belt tensioner, the system (seat belt tensioner and/or airbag with seat belt tensioner) must be tested.

Attach test cable and socket box in accordance with the connection diagram for this purpose.

Connection Diagram of Socket Box

Fig 4: Connection Diagram Of Socket Box

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Measure resistances according to table.

TABLE

Parts to be tested	Socket	Resistance value
Ignition capsule for seat belt tensioner of 9-10 left-hand seat (R12/1)	2-5 Ω
Ignition capsule for seat belt tensioner of 11-12 right-hand seat (R12/2)	2-5 Ω