Removing and Installing Wire Harness For Backrest (Front Seat)

Removing And Installing Wire Harness For Backrest (Front Seat)

Preliminary work
1. Remove the front seat.
2. Remove cushion carrier for front backrest.
3. Remove cover for backrest.
4. Remove suction fan for seat surface.

Removing wire harness for backrest (front seat)







INFORMATION: The description covers a wire harness for maximum equipment. Some plug connections will not be present if the vehicle has less equipment.







Connector overview of wire harness for backrest (front seat)







1. Unscrew the four fastening screws -1- at the left and right and remove the backrest side bolster support -2- at the left and right.







2. Remove foam part -1- at the headrest.
3. Release and pull off connector -1- on control valve for lumbar support adjustment.
4. Release and pull off connectors -2 and 3- on lumbar support sensors.
5. Release and pull off connector -4- on backrest adjustment motor.
6. Release and disconnect plug connection -5- on lumbar support adjustment motor.
7. Release and pull off connector -6- on control unit for memory seat adjustment.
8. Take off tie-wraps -9- and remove wire harness for backrest -A-.
9. Remove connector -8- on central connector.
10. Take off tie-wraps -9- and remove wire harness for airbag -B-.

Installing wire harness for backrest (front seat)







Connector overview of wire harness for backrest (front seat)
1. Route airbag wire harness -B- and secure with new tie-wraps -9-.
2. Fit connector -8- on central connector.
3. Route wire harness for backrest -A- and secure with new tie-wraps -9-.
4. Push on connector -6- on the control unit for memory seat adjustment until it engages securely.
5. Connect plug connection -5- on lumbar support adjustment motor until it engages securely.
6. Plug in connector -4- on backrest adjustment motor until it engages securely.
7. Plug in connectors -2 and 3- on the lumbar support sensors until they click into place.
8. Plug in connector -1- on control valve for lumbar support adjustment until it engages securely.

INFORMATION:
- Observe installation position of pressure hoses.
- Make sure that the pressure hoses are not pinched. Fit pressure hoses exactly into the cut-outs on the foam part.







9. Insert foam part -1- at the headrest.

INFORMATION:
- Check that pressure hoses are routed correctly.
- On vehicles with lumbar support, check that the pressure hoses are routed correctly close to the backrest side bolster support.







10. Fit backrest side bolster support -2- at the left and right and secure with the four fastening screws -1-.







11. Route airbag wire harness -1- behind the backrest side bolster support -2- as shown.

Subsequent work
1. Install suction fan for seat surface.
2. Install cover for left backrest.
3. Install cushion carrier for front backrest.
4. Install the front seat.