22,500 miles (36,000 km) or 18 months
Hyundai Sonata / Sonata 2011 Owners Manual / Maintenance / Scheduled maintenance service / 22,500 miles (36,000 km) or 18 months
❑ Inspect air cleaner filter ❑ Inspect vacuum hose ❑ Replace engine oil and filter (22,500 miles (36,000 km) or 36 months)
See also:
Coolant
The coolant should be changed at the intervals specified in the maintenance schedule. ...
SUN VISOR
Your Hyundai is equipped with sun visors to give the driver and front passenger
either frontal or sideward shade. To reduce glare or to shut out direct rays of
the sun, turn the sun visor down.
...
Checking electric cooling fans
WARNING:
The cooling fan is controlled by engine
coolant temperature and may sometimes
operate even when the engine is not running.
Use extreme caution when working
near the blades of the cooling ...