Checking fluid level

WARNING: This page is about a different variant/trim than selected.

Check fluid level with engine switched off at expansion tank of power steering/ride-height control system. The fluid temperature should be approx. 20 °C here.

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

If necessary, add hydraulic fluid (refer to Service Information Operating Fluids ) up to Max. marking (1).

IMPORTANT: If the fluid level has dropped to the Min. marking (2), you must check the power steering and ride-height control for leaks and issue a separate invoice for this work.

It is not enough merely to top up the fluid.

Fig 1: Identifying Steering Fluid Level Marks

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: To avoid mix-ups when filling with hydraulic fluid, mark the fluid reservoirs or their caps with identification marks.

ATF Automatic transmission fluid

CHF Pentosin CHF11S

Fig 2: Identifying Steering Fluid Reservoir Caps

Courtesy of BMW OF NORTH AMERICA, INC.