Explorer 2WD V6-245 4.0L SOHC VIN E EFI (1997)
One of these warning messages is displayed when the engine oil life remaining is five percent or less.
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When oil life left is between five percent and zero percent, the "CHANGE OIL SOON" message will be displayed.
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When oil life left reaches zero percent, the "OIL CHANGE REQUIRED" message will be displayed.
The message center indicator will indicate the percent of oil life left during System Check. This percentage is based on the driver's driving history
and the time since the last oil change. In order to ensure accurate oil life left indications, the driver should only perform the OIL CHANGE
RESET procedure, as described in the Owner Guide, after an oil change.
To calculate the percentage of oil life remaining, the oil life feature uses:
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The oil temperature sensor input.
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The tachometer input from the Ignition Control Module (ICM).
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The Vehicle Speed Sensor (VSS) input.
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Clock time (maintained internally by the message center).
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The oil life will decrease from 100 percent to 0 percent in no more than 12,068 km (7,500 mi) or 6 months. It will reach zero percent
sooner under different driving conditions.
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The percentage of oil life left is the second display in the system check sequence.
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When oil life left is between five percent and zero percent, the "CHANGE OIL SOON" message will be displayed.
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When oil life left reaches zero percent, the "OIL CHANGE REQUIRED" message will be displayed.
Washer Fluid Level Warning (LOW WASHER FLUID)
This warning message is displayed when there is less than one quarter of the container of washer fluid remaining.
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When the washer fluid level is normal, the windshield washer reservoir fluid level sensor will close, grounding the input at C2009-31 of the
message center indicator.
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When the washer fluid level is low, the input to the message center indicator will be open and the warning will be displayed.
The message center indicator filters this input - therefore, there will be a 20-second delay before the warning is displayed or removed.
Warning Chime
A short warning chime (0.1 second) is output with every message center switch press. A longer warning chime (1.0 second) is output when a new
warning first appears on the message center indicator display.
To activate the warning, pull the chime request output below one volt during the length of the tone.
