17 00 005 Draining off and topping up coolant (M54)

Recycling 

Catch and dispose of drained coolant.

Observe country-specific waste-disposal regulations.

Necessary preliminary tasks: 

• E85: Remove radiator cover
• E83: Remove intake duct
• Remove engine underbody protection
• Remove reinforcement plate

Draining coolant: 

Open cap (1) on coolant expansion tank.

Fig 1: Opening Cap On Coolant Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.

Open drain plug (1) on radiator at bottom.

Fig 2: Opening Drain Plug On Radiator At Bottom

Courtesy of BMW OF NORTH AMERICA, INC.

Drain, catch and dispose off coolant.

Open drain plug (2) on coolant expansion tank at bottom.

Drain, catch and dispose off coolant.

Installation: 

Replace sealing ring.

Tightening torque 17 11 2AZ .

Open drain plug (1) on engine block.

Fig 3: Opening Drain Plug On Engine Block

Courtesy of BMW OF NORTH AMERICA, INC.

Drain, catch and dispose off coolant.

Installation: 

Replace sealing ring.

Tightening torque 11 11 5AZ .

Adding coolant: 

Open vent screw (1).

Fig 4: Opening Vent Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Before filling:

• Switch ignition on.
• Set heater control to maximum temperature.
• Set fan to low setting. This opens the heating

Perform filling operation slowly.

Close vent screw when bubble -free coolant emerges Fill coolant expansion tank to max. cold fill level. Marking (2) is then on a level with upper edge of coolant expansion tank.

Fig 5: Checking Coolant Level

Courtesy of BMW OF NORTH AMERICA, INC.

Vent cooling system and check for leaks.