Oil Reservoir
The single reservoir stores fluid for both the self-leveling and power steering systems. Incorporated in the reservoir, is a reed type level warning switch. If the fluid level drops and the contact closes, a signal is sent to the check control module and a warning will be displayed in the instrument cluster matrix display.
The hydraulic fluid required for the self-leveling suspension system varies between models and installed equipment. The following fluid is used:
- Pentosin CHF7.1
- Pentosin CHF 11S
- Power Steering Fluid (BMW)
This type of fluid is used because of its low viscosity and low noise characteristics. It cannot be mixed with other fluid types.
The self-leveling system fluid type is always marked on the top of the hydraulic reservoir. Always use the correct fluid never mix with another fluid.
When filling the system, be aware of the status of the level control system. If the vehicle is loaded, the level will appear to be low. Do not fill the system unless it is in the resting state. Otherwise, an overflow situation could result.