See also:

Audio System
NOTE: If you install an aftermarket HID headlamp, your vehicle's audio and electronic device may malfunction. ...

Disarmed Stage
The system will be disarmed when the following step is taken: The doors are unlocked by depressing the "UNLOCK" button on the transmitter or unlocked with the ignition key. After depre ...

40 MPG POWERTRAIN
Under the hood, the Hyundai Elantra is powered by an all-new 1.8-liter Nu four-cylinder engine with 148 horsepower and 131 lb-ft of torque (145 horsepower and 130 lb-ft of torque for Elantra PZEV) ...