The button is on the drivers door near the bottom.
In a Hyundai Elantra, the button to open the gas tank door is typically located on the driver's side, either on the dashboard near the door or on the floor next to the driver's seat. Some models may have a lever that you pull to release the gas tank door. If you're unable to locate it, check your owner's manual for specific instructions related to your model year.
Usually every Hyundai Elantra will have a button you can push for the gas tank. However, if it won't open, there is a spot in the trunk for a wire and you can disconnect it so you will be able to manually open it
The kill switch for a 2008 Hyundai Elantra is typically located under the dashboard near the steering column or near the driver's side kick panel. It may be a small toggle switch or button that needs to be pressed or turned to disable the vehicle's ignition system. If you're having trouble finding it, refer to the owner's manual for specific details regarding its location and operation.
Push in the overdrive button(located on the gear shift knob - below the shifter button).
In the 2011 Hyundai Sonata, the Eco button is located on the center console, near the gear shifter. It is marked with a green leaf icon. Pressing this button activates the Eco mode, which optimizes the vehicle's performance for better fuel efficiency.
There is a toggle switch or button down under the dash on the left side of the dashboard....it's called a valet switch, not even my dealer knew this!!
One can program the mirror garage door opener on a Hyundai by pushing the home link button first and holding it. It will then flash slowly with a red light on the mirror. One second later, point the garage opener to the mirror and push the open button.
To set the radio code for a 2005 Hyundai Elantra, first ensure the vehicle is in the "On" or "Run" position without starting the engine. If the radio displays "CODE," enter the four-digit code using the preset buttons (1-6) on the radio. After entering the correct code, press the "AM/FM" or "Enter" button to confirm. If you don't have the code, you may need to consult your owner's manual or contact a Hyundai dealer for assistance.
On your left next to the cruise button
I would look on the dash or steering column or in your owners manual.
Try the trunk release on/off button located in the glove box. If this button is in the off position then the trunk release button will not work.
The 1996 Chevy Corsica trunk release button is located in the glove compartment. The trunk release button will be on the left-hand side of the glove compartment.