Disconnect the bleeder unit for the brake fluid

NOTE: RISK OF DAMAGE 
Paint damage. 
Mechanical or chemical action may lead to paint damage. 

• Cover up working area with specified covering material only.

• Switch off bleeder unit (1) and remove it from the brake fluid expansion tank.
• Check the brake fluid level and adjust it to the maximum mark if necessary.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Check the seal (1) of the sealing cap for damage, replace if necessary.
• Mount the sealing cap on the brake fluid expansion tank.

Courtesy of BMW OF NORTH AMERICA, INC.