Upper Seat Frame, Removing And Installing: Removing
- Follow all Safety Precautions when working with pyrotechnic components. Refer to PYROTECHNIC COMPONENTS SAFETY PRECAUTIONS .
- Before handling pyrotechnic components (for example, disconnecting the connector), the person handling it must "discharge static electricity". This can be done by touching the door striker, for example.
Move the front seat to the highest possible position. This reduces the spring force when removing and installing the torsion bar and the risk of damaging the threaded connections between upper/lower frames of the seat pan.
-- Remove the front seat. Refer to Removing .
-- Remove the backrest. Refer to Removing .
-- Remove seat cover with seat cushion. Refer to LOWER SEAT FRAME COVER AND CUSHION, REMOVING AND INSTALLING, STANDARD SEAT .
-- Disconnect the connector on the seat forward/back adjustment motor.
-- Unclip modular wire routing bracket on the seat pan lower frame.
-- Remove seat position sensor from the lower frame. Refer to SEAT POSITION SENSOR, REMOVING AND INSTALLING .
-- Disconnect the connector from the front seat belt latch Removing => Disconnect the connector -2- and free up the wire. .
-- Unclip the wire from the lower seat frame and set aside.
Standard Seat/Sport Seat/Super Sport Seat:
Danger of damaging the threaded holes or the bushing in the bearing points (connecting upper/ lower frame).
- A second technician must be pushing down on the seat backrest when removing the following bolts.
There is a risk of damaging the threads on the bolt -3-.
- The bolt on the adjusting spindle has left-hand threads.
-- Remove the bolt -3-.
-- Remove the bolts -2- and then remove the upper frame -1- from the lower frame -4-.
Multi-Contour Seat:
Danger of damaging the threaded holes or the bushing in the bearing points (connecting upper/ lower frame).
- A second technician must be pushing down on the seat backrest when removing the following bolts.
There is a risk of damaging the threads on the bolt -6-.
- The bolt on the adjusting spindle has left-hand threads.
-- Remove the bolt -6-.
-- Remove the bolts -4-.
-- Detach the retaining plate -3- on the seat pan lower frame -arrow- and remove.
-- Remove the bolts -1 and 5- and remove the upper frame -2- from the lower frame -7-.
-- Remove the front seat belt latch. Refer to FRONT SEAT BELT LATCH, REMOVING AND INSTALLING .
Procedure for all Seat Versions:
Risk of damaging the bushings -1- in the bearing points -2- (upper/lower frame bolted connection).
- The bushings cannot be replaced with workshop materials.
- If the bushings are damaged, the corresponding assembly parts must be replaced.
-- Remove the bracket with the Memory Seat/Steering Column Adjustment Control Module -J136- / Front Passenger Memory Seat Control Module -J521-. Refer to Removing .
-- Vehicles with seat depth adjuster: Remove the seat depth adjustment, refer to Removing .
-- Vehicles with seat ventilation: Remove the seat cushion fan. Refer to Removing .
-- Remove the Driver Seat Height Adjustment Motor -V245- / Front Passenger Seat Height Adjustment Motor -V246-. Refer to Removing .
-- Remove the Driver Seat Angle Adjustment Motor -V243- / Front Passenger Seat Angle Adjustment Motor -V244-. Refer to Removing .
-- Remove wiring harnesses and individual wires from seat pan upper frame.