BMW X5 Owners & Service Manuals

BMW X5: Draining And Adding Coolant In Radiator (N52K)

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:

Draining coolant:

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

Installation:

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

Coolant Checking Cooler Line
Fig. 5: Identifying Open Cap On Coolant Expansion Tank

Open coolant drain plug (1).

Drain, catch and dispose off coolant.

Installation:

Coolant Checking Cooler Line
Fig. 6: Identifying Open Coolant Drain Plug

NOTE: Adding coolant:

Use only recommended coolant.

Observe mixture ratio.

Observe venting instructions without fail.

Fill and vent cooling system.

VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N52K)

WARNING: Danger of scalding! Open sealing cap only after engine has cooled down.

IMPORTANT: Electric coolant pump! Follow instructions for working on cooling system.

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.

Only when refilling!

Use only recommended coolant.

Observe mixture ratio.

Perform filling operation slowly.

Adjust coolant level to MAX.

Close coolant expansion tank.

Installation:

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

Coolant Checking Cooler Line
Fig. 7: Identifying Coolant Level

IMPORTANT: The following venting procedure is necessary e.g. when a part is replaced in the cooling system or when the cooling system is refilled.

Adding coolant:

Fill expansion tank slowly with recommended coolant up to lower edge until fill level stops dropping.

Observe mixture ratio.

Venting cooling system:

NOTE: Do not leave the coolant expansion tank cap open during the venting procedure.

1. Connect battery charger.

2. Switch on ignition.

3. Set heater to maximum temperature and turn fan down to lowest speed.

4. Press accelerator pedal for 10 seconds to floor. Engine must not be started.

5. The venting procedure is started when the accelerator pedal is pressed and takes approx. 12 minutes.

(Electric coolant pump was activated and shuts down automatically after approx. 12 minutes).

6. Then top up fill level in coolant expansion tank using measuring container with 300 ml above max.

7. Check cooling system for leaks.

8. If venting has to be carried out again (e.g. if cooling system is leaking), allow DME to fall completely (leave ignition key removed for approx. 3 minutes), then repeat from Point 2.

Close coolant expansion tank.

Installation:

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

READ NEXT:

 Radiator, Expansion Tank

CHECKING COOLING SYSTEM FOR WATER LEAKS Special tools required: 17 0 101 17 0 100 TESTER 17 0 113 17 0 100 TESTER 17 0 114 17 0 100 TESTER WARNING: Danger of scalding! Only perform this work afte

 Engine Radiator

 Removing And Installing Radiator (N52K)

WARNING: Danger of scalding! Only perform this work after engine has cooled down. IMPORTANT: Wear protective goggles and gloves. Necessary preliminary tasks: Follow instructions for working on cooli

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