See also:

To Check the Oil Level
Before checking the oil, warm up the engine to the normal operating temperature and be sure it is parked on level ground. Turn the engine off. Wait five minutes, then remove the dipstick, wipe it ...

Air conditioning
Press the A/C button to turn the air conditioning system on (indicator light will illuminate). Press the button again to turn the air conditioning system off. ...

Safety
The Hyundai Sonata is one of only two cars on the market that have received both a Top Safety Pick designation from the Insurance Institute for Highway Safety and a five-star overall safety rating ...