Jaguar XJ (X350). Manual — part 609

General procedures

Cooling System Draining, Filling and
Bleeding

1.

WARNING: To avoid having scalding hot coolant or steam blow out of the

cooling system, use extreme care when removing the coolant pressure cap from a hot
cooling system. Wait until the engine has cooled, then wrap a thick cloth around the
coolant pressure cap and turn it slowly until the pressure begins to release. Step back
while the pressure is released from the system. When certain all the pressure has been
released (still with a cloth) turn and remove the coolant pressure cap from the coolant
expansion tank. Failure to follow these instructions may result in personal injury.

WARNING: Relieve the cooling system pressure by unscrewing the coolant

pressure cap. Failure to follow these instructions may result in personal injury.

CAUTION: The engine cooling system must be maintained with the correct

concentration and type of anti-freeze solution to prevent corrosion and frost damage.
Failure to follow this instruction may result in damage to the vehicle.

Remove the coolant expansion tank pressure cap.


2. Remove the radiator splash shield.



3. NOTE:

Remove and discard the radiator drain plug O-ring seal.

Remove the coolant drain plug.

•

Drain the coolant into a suitable container.

4. Allow the coolant to drain.


5. NOTE:

Install a new O-ring seal.

NOTE:

Do not over tighten the drain plug. Failure to follow this instruction may result in damage
to the vehicle.

Install the coolant drain plug.

•

Remove the drain tray.

6. Lower the vehicle.


7. Remove the coolant expansion tank bleed screw.

8. Fill the cooling system up to the MAX mark on the coolant expansion tank using a fifty
percent mixture of Jaguar Premium Cooling System Fluid or equivalent, meeting Jaguar

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specification WSS M97B44-D and fifty percent water.


9.

CAUTION: Do not over tighten the coolant expansion tank bleed screw. Failure

to follow this instruction may result in damage to the vehicle.

Install the coolant expansion tank bleed screw.

•

Tighten to 3 Nm.

10. Set the heating system to the COLD position.


11. Using an assistant, turn the ignition key to the ON position.


12. NOTE:

Do not allow the expansion tank to empty when the electric coolant pump starts.

Fill the cooling system up to the MAX mark on the coolant expansion tank using a fifty
percent mixture of Jaguar Premium Cooling System Fluid or equivalent, meeting Jaguar
specification WSS M97B44-D and fifty percent water.


13. After 3 minutes, set the heating system to the HOT position.


14. Maintain the coolant level in the coolant expansion tank at the MAX mark using a fifty
percent mixture of Jaguar Premium Cooling System Fluid or equivalent, meeting Jaguar
specification WSS M97B44-D and fifty percent water.


15. After four minutes, refit the coolant expansion tank pressure cap.


16. Start the engine and allow to idle for five minutes.


17. Raise the engine to 2500 RPM for 30 seconds.

18. Turn the ignition key to the OFF position.


19. Allow the engine to cool.


20.

WARNING: To avoid having scalding hot coolant or steam blow out of the

cooling system, use extreme care when removing the coolant pressure cap from a hot
cooling system. Wait until the engine has cooled, then wrap a thick cloth around the
coolant pressure cap and turn it slowly until the pressure begins to release. Step back
while the pressure is released from the system. When certain all the pressure has been
released (still with a cloth) turn and remove the coolant pressure cap from the coolant
expansion tank. Failure to follow these instructions may result in personal injury.

After two minutes, release the cooling system pressure.

•

Remove the coolant expansion tank pressure cap.

21. NOTE:

Make sure the heating system is set to the HOT position.

Turn the ignition key to the ON position.


22. Maintain the coolant level in the coolant expansion tank using a fifty percent mixture of
Jaguar Premium Cooling System Fluid or equivalent, meeting Jaguar specification WSS
M97B44-D and fifty percent water.


23. After three minutes, refit the coolant expansion tank pressure cap.


24. Drive the vehicle on the road at varying speeds until the engine reaches normal operating
temperature.


25. Allow the engine to cool.


26.

WARNING: To avoid having scalding hot coolant or steam blow out of the

cooling system, use extreme care when removing the coolant pressure cap from a hot
cooling system. Wait until the engine has cooled, then wrap a thick cloth around the
coolant pressure cap and turn it slowly until the pressure begins to release. Step back

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