Cooling System - 'Low Coolant' Message Displayed

No.: LA303-006

Issue: 1

Date: June 12, 2006

SECTION: 303-03

"Low Coolant Level" Message or Warning Lamp Illuminated

AFFECTED VEHICLE RANGE:

LR3 (LA) VIN: 5A000360 to 6A367332

CONDITION SUMMARY:

"LOW COOLANT LEVEL" MESSAGE OR WARNING LAMP ILLUMINATED

Situation:
A customer may report that the "Low Coolant" amber warning lamp is illuminated or a "Low Coolant Level" message is displayed in the Message Center when the engine coolant expansion tank volume is within recommended levels.

The coolant level float in the expansion tank can absorb coolant causing the float to sink. The warning lamp and message will display when the float sinks below the low level sensor trigger point.

Action:
Should a customer express a concern related to the above condition, within the specified VIN range, refer to the Repair Procedure detailed in this bulletin.





PARTS





WARRANTY

REPAIR PROCEDURE

VERIFY ENGINE COOLANT LEVEL SENSOR OPERATION AND REPLACE EXPANSION TANK

WARNING:
Care must be taken to prevent injury from escaping hot steam or coolant. The coolant expansion tank filler cap must not be removed while the system is hot.

1. Ensure the engine coolant has cooled sufficiently.

2. Slowly remove the coolant expansion tank filler cap to release the cooling system pressure.

CAUTION:
Engine coolant will damage paint finished surfaces. Immediately remove any spilled coolant and clean area with water.

3. Verify the recommended amount of engine coolant is in the expansion tank.

4. Replace the filler cap.

5. If the coolant level is correct perform the following:





^ Remove the electrical connector from the expansion tank level sensor. (Arrowed in Figure 1)

^ If there is damage to the electrical connector or terminals, repair as necessary.

^ Connect the electrical connector to the expansion tank level sensor.

NOTE:
GTR lookup sequence is as follows:

GTR Home > NAS > Service Information/LA - LR3/2005 > Workshop Manuals > LR3 2005 Workshop Manual > Bookmark "Powertrain/Engine/303-03A or B: Engine Cooling - 4.0L or 4.4L" Removal and Installation link" Coolant Expansion Tank (26.15.01)"

6. If the "Check Coolant Level" message still displays after the connector check, refer to GTR section 303-03A or B operation 26.15.01 and replace the engine coolant expansion tank.

7. Verify that the "Low Coolant Level" message no longer displays in the Message Center and that the "Low Coolant" warning lamp is no longer illuminated when the coolant level is within recommended level.





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