32 13 006 Bleeding power steering unit

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: DANGER OF POISONING if oil is ingested/absorbed through the skin!
RISK OF INJURY if oil comes into contact with eyes and skin!

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Using contaminated equipment to add fluid may introduce dirt particles into the fluid reservoir and significantly reduce the service life of the hydraulic steering system. Do not use any filler funnels or similar!
The fill level may only be checked or adjusted when the engine is stopped! The oil temperature should be approx. 20 °C here.

Ensure that the cap is fully screwed in prior to the fill level check.

NOTE: To avoid mix-ups when filling with hydraulic fluid, mark the fluid reservoir or the cap with an identification mark.

CHF Pentosin CHF11S.

Fig 1: Identifying CHF Pentosin CHF11S

Courtesy of BMW OF NORTH AMERICA, INC.

Thoroughly clean fluid reservoir and its immediate surroundings
Check and correct fill level
NOTE: The fill level is dependent on the oil temperature. Check fill level at an oil temperature between 20 ° and 80 °C.

With engine at operating temperature do not exceed "Max. marking 80 ° C" (1).

Do not drop below "Min. marking 20 °C" (2).

Fig 2: Identifying Maximum And Minimum Temperature Marking Of Fluid Level
Courtesy of BMW OF NORTH AMERICA, INC.

Hydraulic fluid: refer to OPERATING FLUIDS .
Start engine
Turn steering wheel left and right twice in each case up to full lock; if necessary, top up hydraulic fluid (e.g. if hydraulic system is completely drained)
Move steering wheel to straight-ahead position and turn off engine
Check and correct fill level with engine stopped
Check hydraulic system for leaks