Tail Lights not working?

Hello -

To better assist you please tell me if your model is a GLS, GLS 4Motion, GLX, GLX 4Motion, or W8 4Motion. Also the engine size in liter.

So if I understand you correctly....... You replaced your brake light bulbs with a double filimetn bulb and when you turn the lights on all of the lights, side markers too come on but not the tail lights. When you press on the brake, the brake lights work.

First question, do you have any kind of after market trailer connector spliced in on the rear of the car? This is the most common cause of rear light failure. If no, are the fuses good?
It should be a 5amp, #23 in the block under the dash. If yes, then check output from the light switch itself. From the switch to the fuse block should be a green wire with a red tracer. From the fuseblock to the tail lights should be a gray wire with a black tracer. Hope this helps. We don't to get your daughter a ticket.

If you don't use the trailer light connector, I would follow it and remove and repair the wiring as needed. These cars have a problem with the drivers door module getting wet, or damaged due to many door closes. I would unplug the DDM and see if the fuses blow, here is the location. Check out the diagrams (below). Please let us know what happens.