I just got my car back from the dealer and when I fired it up this morning I was met with this error code again that the dealer supposedly fixed. I checked the function and the light itself seems to work fine. I checked both brake and taillight illumination with headlights on.

Anyone have an idea? This is on a 2011 MCS, which I think might have LED lights.

edit: Put a brick on the brake peddle and found the upper bulb is out. I thought cool, easy fix, won't have to go to the dealer. After trying several time I cannot get the plug to come out, it turns just a little bit then stops. The middle one comes out easy. Anyone have a trick for getting that top socket out?