I'm gonna kill my cluster!
 

That little light on the es300 cluster that tells you that you have a tail light out is driving me nuts. Every night last week I checked every bulb to make sure I dont have a burnt one. I even took both tail light houseings off and every bulb lit up. My 3rd break light has 2 bulbs light up in it, which looks normal, and this light wont go off. When I start the car, fine, when I step on the break it pops up.. I'm gonna kill this thing...

Have you had someone stand behind the car when you brake and see if all the lights get brighter? The taillights have dual filaments, one for when the lights are on and a brighter one when you hit the brakes; it sounds like the braking filament on one of the bulbs may be burnt out.