32 13 006 Bleeding power steering unit (Version 1)

WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2017 BMW M6, 2017 BMW 650i xDrive, 2017 BMW 650i, 2017 BMW 640i xDrive, and 2017 BMW 640i. 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 lid is fully screwed in for the fluid 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 Fluid Reservoirs Identification Marks

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°C and 80°C.

With engine at operating temperature do not exceed "Maximum marking"(1).

Do not drop below "Minimum marking"(2)!

Hydraulic fluid: refer to OPERATING FLUIDS .

Fig 2: Identifying Power Steering Unit Oil Temperature
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 fluid level with engine stopped
Check hydraulic system for leak