Cooling System - 'Check Coolant Level' Message Displayed
No: 26/02/03/NAS
Ref:
Issue: 1
Date: 09/12/03
False "Check Coolant Level" Message
AFFECTED VEHICLE RANGE:
Range Rover (LM) All
SITUATION:
"CHECK COOLANT LEVEL" MESSAGE DISPLAYS
The customer may complain that the Check Coolant Level message displays but that the fluid level in the reservoir is at the correct level by visual
inspection.
RESOLUTION:
COOLANT VISCOSITY VERIFICATION REQUIRED
To rectify the apparent inconsistency in the message when the level is visually correct, a careful coolant viscosity check is required. Incorrect
viscosity can lead to incorrect readings and the warning message display. Generally the sensors and expansion tank will not be the cause of the
misleading Instrument Pack message.
150
TOOL INFORMATION:
RN6024 Texaco AFC AntiFreeze
WARRANTY CLAIMS:
Normal warranty policy and procedures apply. Material allowance is included in labor operation.
REPAIR PROCEDURE
TEST COOLANT SPECIFIC GRAVITY
CAUTION:
The low coolant sensing system will not work correctly if the specific gravity of the coolant mixture is incorrect. The specific gravity
requirement for New Range Rover is 1.075,with a 50% anti-freeze solution at 20锟斤拷C (68锟斤拷F). This protects to -36锟斤拷C (-33锟斤拷F).
NOTE:
Accurate testing equipment must be used to ensure that a precise measurement is made. The test MUST be conducted prior to any investigation,
or the replacement of the expansion tank assembly or the low coolant level sensor.
1. Verify the specific gravity of the coolant in the expansion tank is 1.075, with a 50% anti-freeze solution at 20 锟斤拷C (68 锟斤拷F) for protection to -36锟斤拷
