1711 100 Removing and installing/replacing coolant expansion tank Z3/M54/S54: Notes

WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Danger of scalding! Open cap on coolant expansion tank only after engine has cooled down.

NOTE: Follow instructions for working on cooling system. Refer to 17 00... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

Recycling

Catch and dispose of escaping coolant.

Observe country-specific waste-disposal regulations.

Drain off coolant only down to lower edge of coolant expansion tank,

refer to 17 00 005 DRAINING AND TOPPING UP COOLANT .

Release clamp (1) and detach vent hose (2) from coolant expansion tank.

Release screws.

Release diagnosis socket (3) and place to one side.

Fig 1: Removing Components

Courtesy of BMW OF NORTH AMERICA, INC.

Release clip (1) and detach water hose (2).

Release clip (3) and detach water hose (4).

Remove coolant expansion tank.

Fig 2: Removing Coolant Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.