Burnt out lamp if maybe only the rear or front works and the other still works. If the whole side is out back and front, then it may be the switch. Could be the flasher unit too but doubtful if one side is working.
Replace the bulb.
Problem most likely is in the Turn Signal switch. I had same problem , replaced Turn Signal switch assembly and that fixed it.
no such thing as blinker fluid and this is only 2009.
Sounds like a problem with the switch in steering column
With the lkey itself but it only works on driver side
Defective resistor pack.
No it only works on xp, and some other old ones
Replace the bulb, it has two filiments/ One for the tail, one for the turn.
Usually a sign of a bad ground connection or corroded contacts on the light socket. In other words a poor connection at that blinker.
blower resistor is bad
blower fan not working
Well if everything else is working, then the window itself maybe stuck. That maybe the only that could be wrong with it.