Necessary preliminary tasks

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If necessary, release screws for COOLANT EXPANSION TANK and raise coolant expansion tank slightly

NOTE: Operation is shown by way of example on the E85. There may be differences in detail in the case of other vehicle models.

Disconnect plug connection (1).

Turn coolant level switch (2) in direction of arrow and feed downwards out of coolant expansion tank (3).

Fig 1: Turning Coolant Level Switch

Courtesy of BMW OF NORTH AMERICA, INC.