LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2016 >> M5 Standard Trans >> Repair and Diagnosis (Single Page) >> General Information >> OEM General Information >> Functional Description - F10 - Stability Control System, Tire & Wheel System, Lubrication System >> Stability Control System - Functional Description >> Dynamic stability control (DSC) >> Brake fluid level switch

Brake fluid level switch

The brake fluid level switch detects that the brake fluid level has dropped below the required (minimum) brake fluid level in the brake fluid expansion tank. The DSC control unit sends the signal of the bus system to the instrument panel. The instrument panel issues a Check Control message. Normal movements of the brake fluid (during braking or acceleration) in the brake fluid expansion tank will not normally lead to a Check Control message.

A reed contact is installed on the side of the brake-fluid reservoir. The reed contact transmits an electrical signal if the brake fluid level falls below a specified minimum level. The reed contact is closed while the brake fluid level is above the minimum mark.

Fig 1: Identifying Brake Fluid Level Switch
G09908334Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Brake fluid expansion tank
2 Brake fluid level switch
3 two-pin plug connection