Notes and Instructions on Automatic Rear Lid Actuation (From 02/03) (Electrohydraulic-Fully Automatic)

51 24 ... - Notes and instructions on automatic rear lid actuation (from 02/03) (electrohydraulic-fully automatic)





Important!
Adhere to conditions of absolute cleanliness when working on the opened hydraulic system. Even the smallest of dirt particles in the hydraulic system can cause malfunctions.





Function description and check:
- Refer to DIS (Diagnosis and Information System).





Installation location of individual components:
In luggage compartment on right side:
1 - Rear lid module Service and Repair
2 - Hydraulic unit Removing and Installing/Replacing Hydraulic Unit for Rear Lid Actuation (From 02/03) (Electrohydraulic-Fully Automatic)
3 - Proportional valve
4 - Angle transmitter Removing and Installing/Replacing Angle Transmitter for Rear Lid Actuation (Electrohydraulic-Fully Automatic) on right rear lid hinge
In luggage compartment on left side:
- Hydraulic cylinder Service and Repair on left rear lid hinge





Checking fluid level in hydraulic unit:

Necessary preliminary tasks:
- Remove right luggage compartment wheel arch trim
E67 only:
- Remove additional trim panel

Test requirements:

Open rear lid (motor-driven) twice and close again, this bleeds the system.
Rising air bubbles must not be visible.
Check fluid level in installed state.





Check distance (B) from middle of marking (3) to upper edge of pump carrier (1).
B = - 28±1 mm
When rear lid is fully opened (cylinder retracted), fluid level (2) must be in area (A) of marking (3).

Note:
Fluid fill quantity (lines filled with fluid and cylinder retracted):
- Top edge of marked cross = 100 ml
- Bottom edge of marked cross = 80 ml





Correcting fluid level in hydraulic unit:
Operation is described in:
- Correct Correcting Fluid Level in Hydraulic Unit (From 02/03) for Rear Lid Actuation (Electrohydraulic-Fully Automatic) fluid level in hydraulic unit for rear lid actuation (electrohydraulic-fully automatic).