I am not sure, but my Ford Taurus is doing the same thing. I found that if I take the positive battery cable off for about 10 minutes and put it back on, they will work for about 2 weeks.
I found on my wife's 2001 Mercury Sable that the black connector going to the instrument cluster was loose. I cleaned the connections with electrical cleaner and reinstalled the cluster. It seems to solved the problem. The dash lights are L.E.D.'s and when I was removing the cluster I performed the Ford Wiggle test and the lights came on.
A sharp rap with the palm of your hand on the dash just forward of the steering wheel will light it up every time. Repeat when needed
Push the turn signal lever forward
Both turn signals work when they want to. The hazzard lights work just fine. All bulbs are great. The turn signal indicator will flash inside the car for a few seconds and then stop. The outisde turn signal lights stop too.
signal lights not working.
Is the bulb blown?
You Will Have To Take To A Dealer. Best Of Luck
There are separate fuses for trailer signal lights in main fuse panel
either dimmer switch or blown fuse If you are saying that the tail brake lights are working but the third brake light is not....It may be a defective turn signal switch in the steering column.
A mis-wiring or short circuit somewhere between the controls, fusebox and lights.
you need to change the flasher can for the signal lights
POSSIBLY A BADGROUND
you need to buy a signal lights relay
Turn signal indicators are lights. The flash to tell you, or indicate, that a turn signal is on, and which way the lights are flashing.