Changing the engine oil and filter
Hyundai Sonata / Sonata 2011 Owners Manual / Maintenance / Engine oil / Changing the engine oil and filter

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Automatic climate control system
To defog inside windshield
1. Select desired fan speed.
2. Select desired temperature.
3. Press the defrost button ( ).
4. The outside (fresh) air position will be selected automatically.
If th ...
Operating door locks from inside the vehicle
With the door lock button
• To unlock a door, push the door lock button (1) to the “Unlock” position. The
red mark (2) on the button will be visible.
• To lock a door, push the door lock button ...
Theft-alarm system
This system is designed to provide protection from unauthorized entry into the
vehicle. This system is operated in three stages: the first is the "Armed" stage,
the second is the " ...


