Removing the low-temperature coolant expansion tank

NOTE: TECHNICAL INFORMATION 
Only flexible hose pipes may be clamped off.

• Disconnect coolant hose (1) using special tool 0 491 256 (13 3 010) .
• Plastic tubes must not be detached with clamping pliers. 

  Courtesy of BMW OF NORTH AMERICA, INC.

• Release screw (1) on coolant expansion tank (2).

Courtesy of BMW OF NORTH AMERICA, INC.

• Open the lid (1) on the coolant expansion tank.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Suction the coolant using a commercially available syringe (1) or a suitable tool.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Prepare a standard waterproof rubber mat (1).

Letter:	Dimension in cm
A	32.00
B	52.00

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.

• Illustrated on the S63T4: 
• Position the pressure sensor on cylinder head cover.

  Courtesy of BMW OF NORTH AMERICA, INC.

• (2) (1) (3) Make sure that the rubber mat covers the areas between the expansion tank and the cylinder head cover in the area of the injector shafts.

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION 
Collect and dispose of emerging fluids.
Observe country-specific waste disposal regulations.

• Unlock and disconnect the coolant hose (1).
• Press in lock (2) and detach coolant lines (3).
• Remove the low-temperature coolant expansion tank.

Courtesy of BMW OF NORTH AMERICA, INC.