Toyota SIENNA 2011 Quick Reference Manual page 282

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The meters and display illuminate when (Optitron type meters)
Vehicles without a smart key system:
The engine switch is in the "ON" position.
Vehicles with a smart key system:
The "ENGINE START STOP" switch is in IGNITION ON mode.
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. (
2-2. Instrument cluster and information display
I n f o r ma t i o n P r o v i d e d b y :
2
→
P. 725)
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