Toyota HILUX Owner's Manual page 90

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The meters illuminate when
Vehicles without optitron type meter
The front position lights are turned on.
Vehicles with optitron type meter
The engine switch is in the "ON" position.
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The odometer and trip meter display illuminate when
The engine switch is in the "ON" position.
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The brightness of the instrument panel lights
When the headlight switch is turned to on, the brightness will be reduced
slightly unless the control dial is turned fully clockwise.
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When disconnecting and reconnecting battery terminals
The trip meter data will be reset.
NOTICE
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To prevent damage to the engine and its components
●
Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
●
The engine may be overheating if the engine coolant temperature gauge is
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. (→P. 452)
2. Instrument cluster
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