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Home >> BMW >> 2016 >> Z4 sDrive35i >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Convertible Top - Repair -- Z4_E89 >> Motor-Operated Convertible Top >> 54 34... Topping up/extracting fluid, checking fluid level

54 34... Topping up/extracting fluid, checking fluid level

NOTE: No changing of the hydraulic fluid necessary.
  • The hydraulic fluid does not have to be changed because the system is filled with life-time fluid.
  • Only the approved hydraulic fluid may be used in the event of leaks.
  • All hydraulic cylinders must be completely extended.

Checking fluid level: 

Fluid level must be within the markings (arrow) when the unit is horizontal.

Fig 1: Locating Fluid Level Marking
G04781218Courtesy of BMW OF NORTH AMERICA, INC.

Topping up fluid: 

Align hydraulic unit horizontally.

Open oil filler plug.

Pour in required amount of fluid from fluid bottle.

Installation: 

Check fluid level in the meantime.

Pour in hydraulic fluid only up to marking on fluid reservoir.

Fig 2: Locating Oil Filler Plug
G04781219Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Protect components and work area with suitable materials (e.g. cloths).

Extracting fluid: 

Open oil filler plug.

Tilt hydraulic unit and let fluid flow out or draw off with a suitable auxiliary apparatus.

Fig 3: Locating Oil Filler Plug
G04781219Courtesy of BMW OF NORTH AMERICA, INC.