Removing Hydraulic Unit For Rear Lid

WARNING: This page is about a different car, the 2010 Porsche Cayenne, 2009 Porsche Cayenne, and 2008 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Installation Position Of Hydraulic Unit For Rear Lid

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Secure rear lid using the WE1222 transmission and unit jack Junior Jack 0.5 to prevent it from accidentally falling shut.

Fig 2: Securing Rear Lid To Prevent From Falling Shut
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Information
- Only for vehicles without auxiliary air conditioner.
Unscrew fastening screws -1- and remove package box -2- (-arrow-) .

Fig 3: Removing Package Box
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Release holder -2- at the two clips -arrows A- and remove rear lid control unit -1- out of the holder -2- (-arrow B-).

Fig 4: Removing Rear Lid Control Unit
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Disconnect plug connection.

Fig 5: Disconnecting Plug Connection
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1. 3.1. Release plug connection -1- at the retaining clip -2- (-arrow A-) and push down and out -arrow B- .
2. 3.2. Press locking tabs together -arrows C- and disconnect plug connection -1- (-arrow D-).
NOTE:
Incorrect line routing
- Risk of damage to lines and hoses
- Malfunction and fault memory entry on control unit
→ Avoid small bending radii when routing lines.

→ File down edges and burrs in the routing area or mask them with adhesive tape.

→ Maintain a sufficient distance from components exposed to high temperatures while driving.
NOTE:
Incorrect line routing
- Risk of damage to lines and hoses
- Malfunction and fault memory entry on control unit
→ Avoid small bending radii when routing lines.

→ File down edges and burrs in the routing area or mask them with adhesive tape.

→ Maintain a sufficient distance from components exposed to high temperatures while driving.
Unclip water drain hose -1- and oil pressure lines -2 and 3 - from the holders -4 and 5- (-arrows-).

Fig 6: Unclipping Water Drain Hose And Oil Pressure Lines
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Unscrew fastening nuts -2- and swivel out holder with the hydraulic unit -1- (-arrow-).

Fig 7: Swivelling Out Hydraulic Unit Holder
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NOTE:
Incorrect handling of hydraulic system
- Malfunction in hydraulic system
- Risk of damage to hydraulic system
→ Do not disconnect plug-in couplings while opening or closing the rear lid.

→ Secure the lid mechanically to prevent it from closing before disconnecting plug-in couplings.

→ Do not short-circuit plug-in couplings.

→ Do not operate the system while plug-in couplings are disconnected.

→ Do not press actuating cylinder in or pull it out manually when the hydraulic unit is removed.

→ Protect hydraulic system from contamination.
Release plug-in couplings.

Fig 8: Removing Plug-In Coupling (Red)
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1. 6.1. Red oil pressure line: Press in clamp -1- (-arrow A-), release (-arrow B-) and pull out plug-in coupling -2- (-arrow C-).
2. 6.2. Blue oil pressure line: Swivel oil pressure line -1- to the side slightly -arrow A- . Press in clamp -2- (-arrow B-), release (-arrow C-) and pull out plug-in coupling -3- (-arrow D-).
  
  Fig 9: Removing Plug-In Coupling (Blue)
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Remove holder with hydraulic unit from the vehicle.
Cut tie-wrap -1- and remove hydraulic unit -2- out of the holder -3- (-arrow-).

Fig 10: Removing Hydraulic Unit
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Check rubber strips -1- in the marked area of the holder -2- , replace if necessary.

Fig 11: Identifying Rubber Strips And Holder Of Marked Area
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Detach upper part of sound capsule -1- (-arrow A-) and remove hydraulic unit -2- (-arrow B-).

Fig 12: Removing Hydraulic Unit
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