51 24 150 Removing And Installing/Replacing Hydraulic Unit For Rear Lid Actuation (Electrohydraulic-Fully Automatic)

Necessary preliminary tasks: 

• Read and comply with NOTES ON AUTOMATIC REAR LID ACTUATION  (electrohydraulic-fully automatic)
• Remove RIGHT LUGGAGE COMPARTMENT WHEEL ARCH TRIM 

Have a cleaning cloth ready to catch emerging fluid.

E67 only: 

• Remove supplementary trim

Unscrew nuts (1).

Remove holder and pull out hydraulic unit (2).

Disconnect plug connections (3).

For removal of hydraulic cylinder only: 

Unhook cable holders (5) and feed out hoses (4).

Tightening torque: 51 24 4AZ  . See REAR LID LOCKS for specs.

Tightening torque: 51 24 7AZ  . See REAR LID LOCKS for specs.

Fig 1: Pulling Out Hydraulic Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Detaching hoses on hydraulic unit: 

Release banjo bolts (1) and (2).

Installation: 

1. Banjo bolt on hydraulic unit "RED"
2. Banjo bolt on hydraulic unit "BLUE"
3. Adhesive tape on hose is "red"
4. Adhesive tape on hose is "blue"
   Fig 2: Identifying Banjo Bolts And Adhesive Tape

   Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque: 51 24 1AZ  . See REAR LID LOCKS for specs.

Sealing connections on hydraulic unit and hose connections for hydraulic cylinders: 

Hydraulic unit:

Use seal plugs from "Small parts for hydraulic unit"* set and removed seals.

Hose connections:

Use seal plugs with cap nuts from "Small parts for hydraulic unit"* set and removed seals.

* Sourcing reference: BMW Parts Service

Installation: 

Always fit new banjo bolts (1) and seals (2 and 4).

1. Hollow screw
2. Upper seal (thin)
3. Hose connection
4. Lower seal (thick)

• CHECK FLUID LEVEL IN HYDRAULIC UNIT 
  Fig 3: Identifying Banjo Bolt, Lower Seal, Hose Connection And Upper Seal

  Courtesy of BMW OF NORTH AMERICA, INC.

Replacement only: 

If necessary, replace faulty mounts (1) for hydraulic unit (2).

Fig 4: Identifying Mounts For Hydraulic Unit

Courtesy of BMW OF NORTH AMERICA, INC.