Front Seat, Removing With Faulty Seat Forward/Back Adjustment Motor
Special tools and workshop equipment required
- Universal Vehicle Protector : VAS871001
- Follow the safety precautions. Refer to SAFETY PRECAUTIONS WHEN WORKING WITH PYROTECHNIC COMPONENTS .
- To complete the procedure, a second technician is required to be at the following position. Refer to FRONT SEAT, REMOVING WITH FAULTY SEAT FORWARD/BACK ADJUSTMENT MOTOR - Remove the front seat from the vehicle with a second technician. .
Driver Seat Forward/Back Adjustment Motor -V28- /Front Passenger Seat Forward/Back Adjustment Motor -V31-, Checking
-- Move the front seat into its highest position.
- To avoid unnecessary repair costs, check electrical and electronic components and wires before removing the front seat any more.
-- Perform the following tests:
- Check the fuse. Refer to the appropriate Wiring Diagram.
- Check the voltage at the connector station and perform Fault Finding if necessary. Refer to the appropriate Wiring Diagram.
- Check the voltage on the seat forward/back adjustment motor. Refer to the appropriate Wiring Diagram.
- Check the voltage on the seat adjustment control head, and perform Fault Finding if necessary. Refer to the appropriate Wiring Diagram.
-- Replace the fuse if faulty. Refer to the appropriate Wiring Diagram.
-- If there is no voltage, repair or replace the wire. Refer to the appropriate Wiring Diagram.
-- If the control head is faulty: replace the Driver Seat Adjustment Control Head -E470- / Front Passenger Seat Adjustment Control Head -E471-. Refer to Driver Seat Adjustment Control Head -E470- /Front Passenger Seat Adjustment Control Head -E471-, REMOVING AND INSTALLING .
-- If the seat forward/back adjustment motor is faulty, replace the seat pan lower frame. Refer to OVERVIEW - SEAT PAN .
Removing with faulty Driver Seat Forward/Back Adjustment Motor -V28- /Front Passenger Seat Forward/Back Adjustment Motor -V31-
-- If necessary, remove the storage compartment. Refer to STORAGE COMPARTMENT, REMOVING AND INSTALLING .
-- If necessary, remove the fire extinguisher mount. Refer to FIRE EXTINGUISHER MOUNT, REMOVING AND INSTALLING .
-- If necessary, remove the Owner's Manual bracket. Refer to OWNER'S MANUAL BRACKET, REMOVING AND INSTALLING .
-- Disconnect the connector from the seat forward/back adjustment motor.
-- Free up the electrical wire.
-- Remove the seat rail cover on the side sill side. Refer to SEAT RAIL COVER, REMOVING AND INSTALLING, SIDE SILL SIDE .
-- Remove the bolts -1 and 2- and remove the faulty seat forward/back adjustment motor -3- with the bracket.
-- Remove the accessible bolts for the seat rails.
-- Push the front seat forward and back to remove the accessible bolts for the seat rails.
-- Tilt the front seat rearward.
-- Q3: remove the expanding rivets -1 and 2- and remove the cover -3- in direction of -arrow-.
-- Remove the expanding rivet -2- and fold up the section of the carpet -1-.
-- Unclip the cable holder -3-.
Risk of airbag deployment.
Risk of injury.
- Check if the airbag indicator lamp turns on or blinks.
- If the airbag indicator lamp turns on or blinks, the DTC memory must be read.
- If >>short circuit to positive<< is a DTC memory entry, disconnect the battery. Refer to BATTERY, DISCONNECTING AND CONNECTING .
- If there is a DTC memory entry, the Guided Fault Finding instructions on the Vehicle Diagnostic Tester must always be followed.
- If the airbag indicator lamp does not turn on or blink, or there is no DTC memory entry with >>short circuit to positive<< : switch off the ignition, keep the ignition key outside of the vehicle and wait 10 seconds.
Pyrotechnical components can deploy unintentionally.
Risk of injury.
- Discharge the static electricity: quickly touch the door striker.
-- Disconnect the connectors on the connector station in the floor.
4 - Seat Belt Latch/Seat Position Sensor
5 - Thorax airbag
6 - For Versions with Seat Heating
7 - Power Supply
-- To protect the sill panel before prying out the front seat, attach the Universal Vehicle Protector: VAS871001 .
-- Remove the front seat from the vehicle with a second technician.
-- Replace the seat pan lower frame. Refer to OVERVIEW - SEAT PAN .
-- Install the front seat. Refer to Installing .