5. Topping up/extracting fluid

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

E46c: only when convertible top is stowed and convertible top compartment lid is closed.
E52, E85: only with convertible top closed.
E64: 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.
Observe brief instructions .
Remove hydraulic unit without detaching lines.
Fluid is supplied with the repair kits (e.g. banjo bolts/seals, hoses, cylinders) and is available separately (refer to BMW Parts Service).
Pour in fluid with bottle through filling orifice.
Hydraulic unit must be removed if overfilled. Allow fluid to escape through filling orifice and collect.