See also:

Valve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary. An authorized HYUNDAI dealer should perform the operation. ...

Keys
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Transmitter precautions
NOTICE The transmitter will not work if any of following occur: • The ignition key is in ignition switch. • You exceed the operating distance limit (about 90 feet [30 m]). • The battery in the tra ...