Removing

Removing And Installing Main Wiring Harness - Floor Area And Right-Hand Side

Removing main wiring harness - floor area and right-hand side

General information







INFORMATION:
- The repair instructions document "Main wire harness" is divided into several chapters because of its size.
- For body repairs, refer to the specific chapters on installing and removing individual sections of wiring.

CAUTION:
- The main wire harness contains all airbag lines, antenna lines and optical waveguides.
- The main wire harness must therefore not be cut for major repair work and must be replaced complete.
- If individual lines are damaged, isolate them (disconnect, remove plug contacts from plug connections etc.) and replace the original wire harness by installing new lines.

Removing main wiring harness - floor area and right-hand side
Disconnect the battery.

Remove Kessy antenna on rear impact member.

Remove right rear light.

Remove TV tuner.

Remove control unit for level adjustment.

Remove control unit for trailer hitch.

Remove CD changer.

Remove loudspeaker amplifier.

Remove tilt sensor control unit.

Remove rear seat.

Remove right B-pillar trim panel.

Remove front right side-section trim panel.

Remove floor carpeting from the work area.

Remove right rear wheel housing liner.

1. Lift vehicle.







Only for vehicles with tyre pressure monitoring system.

2. Release connector of antenna for tyre pressure monitoring system (rear wheel housing) -Arrow A- and disconnect it -Arrow B-







3. Loosen the five fastening screws on the carbon canister (tank) and the two on the degassing tank in the right wheel housing -arrows-.







INFORMATION: In USA vehicles, the rubber hose -1- of the leak diagnosis pump is extremely tight. If the hose is pulled, the filler neck can break off at the leak diagnosis pump.

4. Release connector on carbon canister -2- and on leak diagnosis pump (USA) -3- and disconnect.
5. Fix carbon canister and degassing tank to the bracket with the fastening screws, but do not tighten.







6. Unclip plug connection (rear wheel housing) -Arrow A-.
7. Release connector -Arrow B- and disconnect plug connection -Arrows C-.







Only in vehicles with Bi-Xenon headlights

8. Release connector on sensor for headlight levelling system (rear wheel suspension) -Arrow A- and remove -Arrow B-.







Only in cars with additional heating

9. Release connector on metering pump (transmission tunnel) -Arrows A- and unclip -Arrow B-.
10. Remove line on corrugated hose holder from threaded bolt -Arrow C-.







11. Release connectors for LOW range - 1 -, centre-differential lock -2- and oil level sensor -3- at transfer box -Arrows A- and remove -Arrows B-.







12. Release connectors on transmission -Arrows A- and pull them off -Arrows B-.
13. Cut tie-wrap -C-.







14. Remove line -a- and (only in cars with additional heating) -b- on corrugated hose holders (transmission tunnel) from threaded bolts -Arrows A-.
15. Press out the rubber sleeve to the inside -Arrow B-.







Only for vehicles with level adjustment.

16. Remove right centre cover.
17. Release the two connectors (underbody right) -Arrows A- and remove them -Arrows B-.
18. Unclip line -Arrow C- and press rubber sleeve up and out -Arrow D-.
19. Lower the vehicle.







20. Press down lock on connector (head airbag) -Arrow A- and maintain in this position.
21. Release connector -Arrow B- and pull off -Arrow C-.
22. Unclip line -Arrow D-.







23. Release connector on lateral acceleration sensor (luggage compartment right) -Arrow A- and disconnect plug connection -Arrows B-.
24. Unclip line -Arrow C-.
25. Press out rubber sleeve and remove line to carbon canister and to leak diagnosis pump -Arrow D-.







26. Remove connector -Arrows A- (D-pillar lower right) and unclip connector bracket -Arrows B-.
27. Unscrew fastening nut -1- and remove ground straps together with twist lock -a- -Arrow C-.
28. Remove line from threaded bolt -Arrow D-.







29. Disconnect both connectors (green & blue) at rear of roof rack -Arrow A- and unclip line -Arrow B-.







30. Unclip line (along rear of side window) -Arrows A- and remove downwards -Arrow B-.







31. Release connector (filler-flap lock) -Arrows A- and disconnect -Arrow B-.







32. Release connector on KESSY antenna (under rear seat) -Arrows A- and remove -Arrows B-.
33. Loosen styrofoam elements -Arrows C- and remove line -Arrow D-.







34. Press down protective cover on connector (C-pillar) -Arrow A- and maintain in this position.
35. Release connector -Arrow B- and pull off -Arrow C-.
36. Cut tie-wrap -D-.
37. Remove airbag sensor on C-pillar.







38. Unscrew fastening nut -1- (rear wheel housing) and remove ground straps together with twist lock -a- -Arrow A-.
39. Remove wiring duct from threaded bolt and wheel housing seam -Arrows B-.







40. Release connector -Arrow A- (rear seat support) and remove from clip -Arrow B-.
41. Unclip line -Arrow C- and remove corrugated hose holder from threaded bolt -Arrow D-.
42. Open clip -Arrow E- and remove line -Arrow F-.
43. Unscrew fastening screws -5- and remove rear seat support -Arrow G-.







44. Unclip line (under rear seat) -Arrow A- and remove corrugated hose holder from threaded bolt -Arrow B-.
45. Remove right rear belt lock
46. Remove cap under right rear seat.







47. Release connector on fuel-level sensor -Arrow A- and pull it off -Arrow B-.
48. Remove line to fuel-level sensor together with rubber sleeve -Arrow C-.







Only for vehicles with level adjustment.

49. Open wiring duct -Arrow A- and remove air tubes -Arrow B-.
50. Remove line with wiring duct from threaded bolts -Arrows C-.
51. Unplug connector on airbag sensor at B-pillar.







Only for vehicles with electric adjustment fitting.

52. Press down protective cover on connector (B-pillar) -Arrow A- and maintain in this position.
53. Release connector -Arrow B- and pull off -Arrow C-.
54. Unscrew fastening nut -1- and remove ground straps together with twist lock -a- -Arrow D-.







55. Unclip line -arrows- (lower B-pillar).







A- & B-pillar

56. Release wire sleeve with a small screwdriver -Arrows A- and press away to the rear -Arrow B-.







A- & B-pillar

57. Release connector for door wire harness -Arrows C- and pull off -Arrow D- connector.
58. Release socket bracket -Arrows A- and remove -Arrow B-.

B-pillar only

59. Release sockets -Arrows C- and pull out to the rear -Arrows D-. Then pull line out of B-pillar.







A-pillar

60. Unscrew fastening nut -1- and remove ground straps together with twist lock -a- -Arrow A-.
61. Pull line out of A-pillar -Arrow B-.







62. Release plug (under right front seat) -Arrows A- and disconnect it from the tyre filling connection -Arrow B-.







63. Unscrew fastening nut -1- (under right front seat) and remove ground straps together with twist lock -a- -Arrow A-.
64. Remove line from threaded bolt -Arrow B-.







65. Remove wiring duct (rear door floor area) from threaded bolts -Arrows A-.
66. Cut the tie-wraps -B-.

Remove main wire harness - dashboard area and centre console.