32 13 006 Bleeding power steering unit

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. 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.

Pentosin CHF 11S.

Fig 1: Identifying Reservoir Cap

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).
Hydraulic fluid: refer to OPERATING FLUIDS .

Fig 2: Identifying Fill Level Temperature Markings
Courtesy of BMW OF NORTH AMERICA, INC.
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