Changing light bulb

1
Open the Elantra's trunk and locate the rear of the taillight assembly, behind the felt cover inside the trunk. Pull the felt cover down. You will now see three Phillips-head screws that are holding the cap over the rear of the taillight assembly.
2
Unscrew the screws from the cap and slide the cap off the rear taillight cover and set it to the side. You will now see three bolts that are holding the rear tail light cover on.
3
Remove the nuts from the bolts that are holding the rear taillight cover to the rear taillight assembly, using a ratchet and a 8mm socket.
4
Move the taillight cover back and forth with your hand to loosen the seal. Gently pull the taillight cover away from the taillight assembly housing. Wires are attached. Gently pull the cover out so you can reach the taillight bulb.
5
Grab the silver base on the bottom of the taillight bulb and push the bulb in and turn the bulb counterclockwise at the same time until it unlocks from the socket. Pull the bulb out of the socket.
6
Push the new bulb into the socket, turning it clockwise at the same time until the socket stops turning. When the bulb stops turning, it is locked in place. To make sure, gently pull back on the bulb to see if it comes out.
7
Turn the Elantra's headlights on and check to make sure the new bulb works. If so, put the rear taillight cover back on the rear taillight assembly in the trunk. Put the three nuts back on and tighten them with the ratchet and 8mm socket.
8
Slide the rear cap back over the rear tailight cover and put the screws back in. Tighten them down with the Phillips-head screwdriver.
9
Pull the felt cover back over the rear taillight assembly. Close the trunk.