17 00 005 Draining and Adding Coolant In Radiator (N52K)

WARNING: This page is about a different variant/trim than selected.

WARNING: Danger of scalding!
These tasks on the cooling system should only be carried out on an engine that has cooled down!

IMPORTANT: Wear protective gloves and goggles.

IMPORTANT: Lifetime coolant filling:
Never reuse used coolant!
When replacing and removing components which rely on the corrosion protection effect of the coolant, it is essential to change the coolant. The cooling system must therefore be drained and refilled.
In the case of other removal work involving the draining of partial quantities of coolant, replace these quantities which have been drained with new coolant.

Installation:

Use only recommended coolant.

Observe mixture ratio.

Recycling

Catch and dispose of drained coolant.

Observe country-specific waste-disposal regulations.

Necessary preliminary tasks:

Follow instructions for working on cooling system. See 17 00 ... Instructions For Working On Cooling System
Remove underbody protection. See 51 47 490 REMOVING AND INSTALLING / REPLACING FRONT ASSEMBLY UNDERSIDE PROTECTION
Remove reinforcement plate. See 31 10 010 REMOVING AND INSTALLING/REPLACING REINFORCEMENT PLATE

Draining coolant:

Open cap (1) on coolant expansion tank (2).

Installation:

Close cap (1) until the arrow marks line up.

Fig 1: Identifying Open Cap On Coolant Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.

Open coolant drain plug (1).

Drain, catch and dispose off coolant.

Installation:

Replace sealing ring.
Tightening torque. See 17 11 RADIATOR AND MOUNTING PARTS .

Fig 2: Identifying Open Coolant Drain Plug
Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Adding coolant:
Use only recommended coolant.
Observe mixture ratio.
Observe venting instructions without fail.
Fill and vent cooling system 17 00 039 Venting Cooling System And Checking For Water Leaks (N52K)