2011 Hyundai Sonata Owner's Manual

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Maintenance
MAINTENANCE UNDER SEVERE USAGE CONDITIONSSEVERE DRIVING CONDITIONS
A - Repeatedly driving short distance of less than 5 miles (8 km) in normal tem-perature or less than 10 miles (16 k

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Maintenance18
7EXPLANATION OF SCHEDULED MAINTENANCE ITEMSEngine oil and filterThe engine oil and filter should be
changed at the intervals specified in the
maintenance schedule. If the car is being
d

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Maintenance
Air cleaner filterA Genuine HYUNDAI air cleaner filter is
recommended when the filter is
replaced.Spark plugsMake sure to install new spark plugs of
the correct heat range.Valve clear

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Maintenance20
7Parking brakeInspect the parking brake system includ-
ing the parking brake pedal and cables.Brake discs, pads, calipers and
rotorsCheck the pads for excessive wear, discs
for run out

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Maintenance
ENGINE OILChecking the engine oil level  1. Be sure the vehicle is on level ground.
2. Start the engine and allow it to reachnormal operating temperature.
3. Turn the engine off and w

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Maintenance22
7Changing the engine oil and filterHave engine oil and filter changed by an
authorized HYUNDAI dealer according to
the Maintenance Schedule at the begin-
ning of this section.
CALIFORNI

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Maintenance
The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the fac-
tory.
Check the antifreeze protection and
coolant level

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Maintenance24
7Recommended engine coolant• When adding coolant, use only deion-
ized water or soft water for your vehicle
and never mix hard water in the
coolant filled at the factory. An improp-
e