There is a stop lamp inhibit relay in the TIPM under the hood I think is out. Here are guides to help you do the test.
Check out the brake wiring diagram and fuse panel identification below so you can see how the system works.
But before you do anything, I would check the brake light switch. It isn't hard to do. There are two wires to it and one is a power supply and the other sends the power to the lights. I would suggest just checking of there is power available to the switch. If there is, actuate the switch and check if there is power out. Not a difficult process. Also, I have seen many times over the years where the switch has come loose or disconnected. As a result, pressing the brake pedal won't actuate it.
This is the what I would suggest first. And yes, there are bulbs that have two elements in them. One functions for the parking light and the other for the brake and turn signal.
One last thing, I do have access to wiring schematics, but I can't copy and paste. If you can give me specifics, I will try guide you.
PS: Again, check the switch first before taking it to a dealer. I feel that is where the problem is coming from.
Check out the diagrams (Below)
Please let us know what you find. We are interested to see what it is.
Images (Click to enlarge)
Tuesday, October 7th, 2014 AT 8:54 AM