Look in the fuse box under the lower left corner of the dash. The fuse panel has the application on the inside[at least my 04 does]
It means that one of the bulbs is out on one of your brake lights, whether it is the back window, right or left side, or in the spoiler.
I replaced the gage cluster and everything went back to normal.
You have a tail light burnt out.
Check the cable, it gets broken especially in the places where you can see it or at its movable parts.
one of your lights is out
from inside trunk remove trunk liner to expose back side of lights locate screws and remove install is the reverse
It should be on the back side engine. The side which is facing the firewall.
Check the fuses.
This is the real light signal. If you have a brake or signal light burnt out in back end it will light. If it is a short if will light and go out intermittatley. There is also a list of what these lights indicate in your owners manual. .
On the interior lights for the back seats, there is a switch. When you turn the switch to "Door" mode it will make the lights turn on when the door is opened.
In the back should be tail lights which always come on when the headlights or parking lights are on, and stoplights which come on whenever the brakes are pressed. The stoplights should be brighter than the tail lights, but they should be separate.
fuel tank has to be dropped