975719 Removing and installing wiring for electrically adjustable seat
WM 975719 Removing and installing wiring for electrically adjustable seat
Tools
Preliminary work
Remove front seat. -> 720119 Removing and installing front seat - section on "removing" 720119 Removing and Installing Front Seat
Removing wiring for electrically adjustable seat
CAUTION
Danger of injury and material damage if airbag units are not handled correctly. Always observe the safety regulations for handling airbag units -> 69 Safety regulations for vehicles with airbag and seat-belt tensioner.
-> The airbag unit must always be stowed so that the airbag opening faces upwards.
-> If removed for an extended period, the airbag unit must be kept in a locked place.
-> Remove ignition key. Disconnect battery. Route or isolate ground strap so that all contact with a ground carrier (e.g. body, seat frame) is avoided. -> 90 Work instructions after disconnecting the battery.
-> After the battery is disconnected, always wait for 1 minute before disconnecting the airbag plugs.
Overview of line for electrically adjustable seat
1. Disengage plastic strips of backrest cover -Arrows A-.
Disengage plastic strips, cut tie-wraps and disconnect plugs
2. Cut tie-wrap -a-.
3. Move floor light holder to the left to release -Arrow B- , then to the right to remove -Arrow C-.
4. Release plugs -Arrows D- and remove from floor light -Arrow E-.
5. Compress locking mechanism of airbag plug -Arrow A- and pull off the plug -Arrow B-.
Pulling off airbag plug
6. Release ground connector -1- and central connector -2- for backrest -Arrows A- and pull off both connectors -Arrows B-.
Pulling off ground and central connectors
7. Release both connectors -Arrows A- and unplug from switch for power-seat controls -Arrows B-.
Removing connectors from switch for power-seat controls
8. Press together the locking tabs of the clip -Arrows A- and pull out the connector, together with the clip, in a downward direction -Arrow B-.
Disconnecting connector with clip
9. Press the locking tab to the side -Arrow C- and remove the connector from the clip -Arrow D-.
Information
- If necessary for reasons of space, remove the seat-belt buckle plug beforehand.
10. Remove front belt lock. -> 692419 Removing and installing front belt lock - section on "Removing" 692419 Removing and installing front seat-belt buckle
11. Push central lock on the side in a downward direction -Arrow A- until the retaining hook is released, then push the central connector downwards from the clip -Arrow B-.
Disconnecting connector from clip
12. Release connector -Arrow A- and disconnect it from the seat heater control unit -Arrow B-.
Unplugging central connector from control unit
Information
- Disconnect the connector axially from the motor. Otherwise the retaining lugs can break off and this can prevent the connector from locking securely.
13. Unplug connectors from adjusting motors -Arrow-.
Unplugging connectors from adjusting motors
14. Push the retaining hooks on the inner spring upwards -Arrow A- and remove the socket housing sideways -Arrow B-.
Removing socket housing
15. Unclip wiring harness from inner spring using a disassembly tool, universal NR.21 -Arrows-.
Unclipping wiring harness from inner spring.
16. Unclip wiring harness from seat frame -Arrows- and remove.
Unclipping wiring harness from seat frame.
Installing wiring for electrically adjustable seat
1. Clip wiring harness to inner side of seat frame -Arrows-.
Clipping wiring harness to inner side of seat frame
2. Clip wiring harness into inner spring -Arrows-.
Clipping wiring harness into inner spring
3. Press socket housing into the inner spring at the side -Arrows- until the locking mechanisms are felt to engage.
Inserting socket housing
4. Insert ground connector of airbag -1- and central connector of backrest -2- into seat wiring harness -Arrows A- until locking tabs -Arrows B- are felt to engage.
Inserting airbag ground connector and central connector of backrest
5. Compress airbag connector -Arrow A- until the locking mechanism -Arrow B- is felt to engage.
Insert airbag connector
6. Push connectors onto adjusting motors -Arrow- until they are felt to engage.
Pushing connectors onto adjusting motors
7. Push clip onto airbag connector -Arrow A- until locking mechanism is felt to engage -Arrow B-.
Push clip onto airbag connector, insert in retainer plate and plug connector into control unit
8. Insert airbag connector into the retainer plate -Arrow C- until the clip is felt to engage in the retainer plate.
9. Push central connector onto the retaining clip -Arrow D- until it is felt to engage.
10. Insert plug into seat heater control unit -Arrow E- until it is felt to engage.
11. Insert connector into floor light -Arrow A- until the locking tabs are felt to engage -Arrows B-.
Insert connector for floor light, attach tie-wrap and install floor light
12. Fasten line with a new tie-wrap -a- to the holder.
13. Slide in holder with footwell light to the left -Arrow C- , then move it to the right -Arrow D- until the latch is felt to engage.
14. Engage plastic strips of backrest cover on the inner spring -Arrows E-.
Subsequent work
Install front seat. -> 720119 Removing and installing front seat - section on "installing" 720119 Removing and Installing Front Seat
Connect battery and carry out work instructions after disconnecting the battery. -> 90 Work instructions after disconnecting the battery