Hyundai Sonata (2009)

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    INSTRUMENT PANEL LIGHT CONTROL (RHEOSTAT)
    The instrument panel lights can be made brighter or dimmer by turning the instrument panel light control knob. ...

    Manual heating and air conditioning
    The heating and cooling system can be controlled manually by pressing buttons or turning knob(s) other than the AUTO button. In this case, the system works sequentially according to the order of b ...

    Power Connector
    Your vehicle is equipped with a power connector to prevent battery discharge if your vehicle is parked without being operated for prolonged periods. Use the following procedures before parking t ...