17 00 005 Draining and topping up coolant (Z3 M54): Installation:

WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. However, it is still accessible from the selected car via links, so may be relevant.

Replace seal.

Open drain plug on right of engine block.

Fig 1: Opening Drain Plug On Right Of Engine Block

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Drain, catch and dispose of coolant.

Replace seal.

Tightening torque, refer to 11 11 5AZ 11 11 ENGINE BLOCK .

Adding Coolant:

NOTE: The tank mark indicates the fluid level at approx. 20°C. Use only recommended coolant.

Turn on ignition.
Set heating controller to maximum temperature.
Set fan to low setting. This opens the heating valves and starts the auxiliary water pump.
Perform filling operation slowly.
Top up coolant expansion tank up to max. cold fill level.
Close vent plug when bubble-free coolant emerges.
Close coolant expansion tank.

Vent cooling system and check for leaks.