See also:

Brake booster
The brake booster uses engine manifold vacuum to assist braking force. Do not turn off the engine while driving because that will turn off the brake booster, resulting in poor braking power. ...

Engine
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A/C – Air conditioner button
If the windshield starts to fog when the climate control system is operated in the AUTO mode, press the air conditioner button “A/C” to defog and dehumidify. When this button is pressed, the air ...