11 53 000 Removing and installing/replacing coolant thermostat (N62)

WARNING: Danger of scalding!
Only perform these tasks on an engine that has cooled down.

Recycling:

Catch and dispose of drained coolant.

Observe country-specific waste-disposal regulations.

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

Remove front underbody protection.

Remove coolant drain plug on radiator. Drain and dispose of coolant.

Unlock plug (1) and remove.

Fig 1: Removing Coolant Thermostat

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and detach water hose (2).

Unfasten nut.

Release screws and remove coolant thermostat (3).

NOTE: Coolant thermostat is integrated in cover and can only be replaced as a complete unit.

Clean sealing surfaces.

Fig 2: View Of Coolant Thermostat

Courtesy of BMW OF NORTH AMERICA, INC.

Replace sealing ring (1).

Installation:

Top up coolant. Vent cooling system and check for leaks. Refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N62) .