Spark plugs
Hyundai Sonata / Sonata 2011 Owners Manual / Maintenance / Explanation of scheduled maintenance items / Spark plugs
Make sure to install new spark plugs of the correct heat range.
See also:
Drive belts
Inspect all drive belts for evidence of cuts, cracks, excessive wear or oil saturation
and replace if necessary. Drive belts should be checked periodically for proper
tension and adjusted as neces ...
Recommended cold tire inflation pressures
All tire pressures (including the spare) should be checked when the tires are
cold. “Cold Tires” means the vehicle has not been driven for at least three hours
or driven less than one mile (1.6 km ...
Checking Engine Cooling Fan
The engine cooling fan should come on automatically if the engine coolant temperature
is high. ...


