975619 Removing and installing wiring for backrest

WM 975619 Removing and installing wiring for backrest

Tools






Preliminary work

1. Remove front seat.

-> 720119 Removing and installing front seat - section on "removing" 720119 Removing and Installing Front Seat
2. Remove front backrest frame.

-> 721919 Removing and installing front backrest frame - section on "removing" 721919 Removing and Installing Front Backrest Frame
3. Remove lumbar support.

-> 723419 Removing and installing lumbar support - section on "removing" 723419 Removing and Installing Lumbar Support

Removing wiring for backrest





Installing line for backrest

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.

1. Release the plugs on the height -1- and cambering adjustment motor -2- of the lumbar support -Arrow A- and disconnect -Arrow B-.





Disconnecting plugs on the height and cambering adjustment motor of the lumbar support

Information

- Disconnect the plug from the backrest adjustment motor in an axial direction only. Otherwise the retaining lugs can break off and a secure plug lock cannot be guaranteed.

2. Pull off plug from the backrest adjustment motor -Arrow C-.
3. Unclip wiring harness using a disassembly tool, universal NR.21 -Arrows-.





Unclipping wiring harness

4. Push inner edge of protective cover inwards -Arrow A- and pull protective cover down and out -Arrow B-.





Removing protective cover

5. Cut tie-wrap -C- and remove protective cover.
6. Remove line upwards -Arrow D-. Make sure that the two plugs are not damaged.

Installing wiring for backrest

1. Guide side airbag wiring harness through the backrest frame -Arrow A-. Make sure that the two plugs are not damaged when you do this.





Installing side airbag wiring harness

2. Clip wiring harness onto the backrest frame -Arrows B-.

Information

- Ensure that the tie-wrap is installed correctly as it can impact on the backrest frame and hinder installation of the protective cover.

3. Fit protective cover on wiring harness and fasten it with a commercially available tie-wrap -Arrow A-. Push protective cover upwards -Arrow B- and fasten it to the backrest frame.





Installing protective cover

4. Push in plug on backrest adjustment motor -Arrow A- until it is felt to engage.





Connecting plugs on the height and cambering adjustment motor of the lumbar support

5. Insert the plugs on the height -1- and cambering adjustment motor -2- of the lumbar support -Arrow B- until the locking mechanisms are felt to engage -Arrow C-.

Subsequent work

1. Install lumbar support.

-> 723419 Removing and installing lumbar support - section on "installing" 723419 Removing and Installing Lumbar Support
2. Install front backrest frame.

-> 721919 Removing and installing front backrest frame - section on "installing" 721919 Removing and Installing Front Backrest Frame
3. Install front seat.

-> 720119 Removing and installing front seat - section on "installing" 720119 Removing and Installing Front Seat