Topping Up Fluid In Hydraulic Control Unit:

If necessary, remove and install hydraulic control unit for boot lid controls (electrohydraulic/fully automatic), refer to 51 24 150 REMOVING AND INSTALLING/REPLACING HYDRAULIC CONTROL UNIT FOR OPERATING TRUNK LID (ELECTROHYDRAULIC/FULLY AUTOMATIC) .

Release oil filler plug (1) on hydraulic control unit (2). Add as much hydraulic fluid until it reaches area of marking.

Fig 1: Identifying Oil Filler Plug And Hydraulic Control Unit

Fit a new oil filler plug (1) and seal.

Check fluid level again (refer to previous work step).