See also:

Illuminated engine start/stop button
Whenever the front door is opened, the engine start/stop button will illuminate for your convenience. The light will go off after about 30 seconds when the door is closed. ...

Keys
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2012 Hyundai Elantra review By Steven Cole Smith
Just as Hyundai did with the new Sonata -- which matches and in many ways surpasses its top competition in the midsized category, the Honda Accord and Toyota Corolla -- the Korean company is hopin ...