Everything is done from inside the car (Backseat).
With a fingernail or small flathead screwdriver pry small plastic screwcovers off of left and right side of light. They are about the size of a dime and close to the bottom of the fixture.
Once the covers are removed you will see a phillips head screw beneath each one. Remove both screws.
Once the screws are removed you will be able to lift the light a little. Be careful as it is still attached with a wire. You will be able to turn it and see the underside.
Turn the bulb socket counterclockwise to release it.
Replace the bulb.
Reassemble.
the switch needs to be adjusted
The check engine light, on your Hyundai Elantra can be reset by removing the fuse. Keep the fuse out for 10 seconds and replace it to its slot.
My Hyundi elantra has the oil light on but it has oil in it. Is the oil pump broken
It should be under the dash on the drivers side.
How to change third brake light in 2009 Hyundai sonata
Chjeck the brake light switch located somewhere on the brake pedal lever.
I am referring to stop light located at back window.
2007 Hyundai Elantra brake light bulb replacement: Purchase the correct replacement brake light bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement brake light bulb information. Then consult your owner's manual for the replacement procedure. As simple as it sounds, the owner's manual is the best place to start for brake light bulb replacement instructions and illustrations. You may want to consider replacing both left and right at the same time in order to keep brightness and color equal (optional).
Get your brakes checked. It can be something simple, or it can mean impending doom.
From: http://www.2carpros.com/makes/hyundai.htm Answer: It sounds as if the brake light switch needs to be adjusted. It is located on the brake pedal leakage up under the dash.
it would be the brake light switch about 20 dollars at autozone
How do you replace rear window brake light bulb in the 2004 Hyundai Santa Fe?Read more: How_do_you_replace_rear_window_brake_light_bulb_on_2004_Hyundai_Santa_f_e