Engine Heater
The engine coolant heater, if available, can help in cold weather conditions at or below −18°C (0°F) for easier starting and better fuel economy during engine warm-up.
Plug in the coolant heater at least four hours before starting the vehicle. An internal thermostat in the plug end of the cord will prevent engine coolant heater operation at temperatures above −18°C (0°F).
See also:
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The Rendezvous was a badly needed success for Buick, given the literal
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Sensors
The solar sensor, located on top of the instrument panel near the windshield,
monitors the solar heat.
The climate control system uses the sensor information to adjust the temperature,
fan speed, ...
Tachometer
The tachometer
displays the engine
speed in revolutions
per minute (rpm). ...