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:
Low Fuel Level Warning Light
The low fuel level warning light comes on when the fuel tank is approaching empty.
When it comes on, you should add fuel as soon as possible. Driving with the fuel
level warning light on or with ...
Valve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary.
An authorized HYUNDAI dealer should perform the operation. ...
Warnings and indicators
All warning lights are checked by turning the ignition switch ON (do not start
the engine). Any light that does not illuminate should be checked by an authorized
HYUNDAI dealer.
After starting th ...


