Removing And Installing Wire Harness For Tailgate

1. Wire harness for tailgate, left
2. Wire harness for tailgate, center
3. Wire harness for tailgate, right
Fig 1: Identifying Tailgate Wire Harness Installation Position
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Information 

The number of plug connections can vary, depending on equipment.

1. Loosen wire harness at the connection point in the roof at the left and right.
   1. 1.1. Disconnect plug connection at the connection point.
   2. 1.2. Unscrew ground connection from roof.
   3. 1.3. Release housing for connection point -A-  and remove it from the opening in the body -B-  .
   Fig 2: Identifying Roof Ground Connection
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   4. 1.4. Release plug connection -A-  and press the plug connection out of the housing -B-  .
   5. 1.5. Release housing side panel for wire harness connection point -C-  and swivel it out -D-  .
   6. 1.6. Pull electric lines out of the housing -E-  .
   7. 1.7. Unclip wiring harness for antenna lines -A-  .
      Fig 3: Loosening Socket And Ground Strap

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   8. 1.8. Loosen antenna lines from the bracket -B-  , release them -a-  and pull them off.
   Fig 4: Identifying Rear Roof Antenna Lines Connection Points
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   9. 1.9. Detach rubber sleeve at the left and right and pull wire harness towards the tailgate.
      Fig 5: Detaching Rubber Sleeve

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2. Disconnect plug connections for wire harness at the left in the tailgate (depending on equipment).
   1. 2.1. Release plug connection -1-  for additional brake light -a-  and pull it off -b-  .
      Fig 6: Identifying Additional Brake Light

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   2. 2.2. Release and pull off plug connections -3, 4, 5, 6-  on the antenna amplifier (left).
      1. Power supply for rear window heating
      2. Ground connection
      3. TV antenna line (brown)
      4. TV antenna line (green)
      5. Radio antenna line (white)
         Fig 7: Identifying Left Antenna Amplifier

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   3. 2.3. Pull off plug connections -1-  for rear window heating at the left.
   4. 2.4. Unscrew screw on ground strap -2-  .
   5. 2.5. Release and pull off plug connections -1, 3, 4-  on the antenna amplifier (center) -2-  .
      1. 3  - TV antenna line (brown)
      2. 4  - TV antenna line (green)
         Fig 8: Identifying Centre Antenna Amplifier

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   6. 2.6. Release and pull off plug connection -2-  on the antenna amplifier (right) -1-  .
   7. 2.7. Disconnect plug connection -3-  at the connection point to the center wire harness.
      Fig 9: Identifying Rear Lid Wire Harness Connection Point

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   8. 2.8. Release and pull off plug connection -2-  for spoiler drive -3-  .
   9. 2.9. Release plug connection -4-  for upper part of lid lock -a-  and pull it off -A-  .
      Fig 10: Disconnecting Control System Plug Connection

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3. Disconnect plug connections for wire harness at the right in the tailgate (depending on equipment).
   1. 3.1. Unscrew screw -1-  on ground strap.
      1. 1  - Ground connection
      2. 3  - Central locking system antenna line (grey)
      3. 4  - Radio antenna line (white)
      4. 5  - Radio antenna line (black)
      5. 8  - Ground connection for rear window heating
         Fig 11: Identifying Right Antenna Amplifier

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   2. 3.2. Pull off plug connections -8-  for rear window heating at the left.
   3. 3.3. Release and pull off plug connections -2, 3, 4, 5, 6-  on the antenna amplifier (right) -7-  .
   4. 3.4. Release and pull off plug connection for tailgate button -1-  .
      Fig 12: Identifying Tailgate Button

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   5. 3.5. Release plug connections for auxiliary heating control unit -A-  and pull them off -B-  .
      Fig 13: Identifying Plug Connection On Auxiliary Heating Control Unit

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   6. 3.6. Release plug connection -1-  on wiper motor for rear lid -a-  and pull it off.
      Fig 14: Disconnecting Electric Plug Connection

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4. Disconnect plug connections for wire harness at the center in the tailgate (depending on equipment).
   1. 4.1. Disconnect plug connection at the left and right for actuating cylinder for lid.
      Fig 15: Disconnecting Electric Plug Connection

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   2. 4.2. Release and pull off plug connections -1, 2, 3 -  on the rear lid control unit -4-  .
      Fig 16: Identifying Rear Lid Control Unit

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5. Remove upper insulation on the left and right.
   Fig 17: Removing Insulation

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6. Detach mounting for wire harness for tailgate.
   1. Mounting for wire harness for tailgate, left
   2. Mounting for wire harness for tailgate, right
   3. Mounting for wire harness for tailgate, center
   1. 6.1. Cut tie-wraps -4-  .
   2. 6.2. Unclip fixing clips.
   Fig 18: Identifying Wire Harness Fastening Points
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7. Installation is performed in reverse order.