I think i have a possible BCM (body control module) issue with my 05 tC, for some reason both my ABS and BRAKE lights are on inside the cluster, and also my sunroof will not open or close at all... also my TPMS light is on,
and my speedometer does not work as well. If anyone could give me some sort of direction as to what is causing this issue... it would be greatly appreciated... and yes I have checked and double checked all the fuses.

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your ABS is shot.. wires.. or something..
that would cause your TPMS light and your speedo to not work.

as far as the moonroof? that's something totally different and separate... you would hope it's a fuse for that..

but here's the big question... what was the last thing done to the car? rotate some tires? new wheels? brake work? hit a massive rock? crashing into a pole?

 

Or... its a fuse... all those are on an ign fuse... no power means no worky... I would start by checking your fuses under the hood....

 

IVE CHECKED ALL THE FUSES AND ALL LOOK OKAY, CAR STARTS AND RUNS FINE, NO ISSUES, OTHER THEN THOSE LIGHTS ON... THE CAR HAS BEEN STORED AND NOT DRIVEN FOR A COUPLE MONTHS, AND I CAN'T RECALL WHAT THE LAST THING I DID BEFORE THE ISSUE WAS THERE SINCE I DONT DRIVE IT MUCH,,, I DO HAVE AFTERMARKET WHEELS, BUT THEY'VE BEEN ON BEFORE AND HAVEN'T CAUSED AN ISSUE... I TRIED RESETTING THE ECU WITH DISCONNECTING THE BATTERY, BUT JUST ONCE IT ACTUALLY STARTED WITHOUT THE LIGHTS ON, BUT THEN SOON AFTER, THEY CAME BACK ON... I REALLY DONT KNOW WHAT ELSE COULD BE CAUSING THIS... AND TAKING IT TO THE DEALER IS A LAST RESORT, BUT I REALLY WANT TO AVOID IT IF POSSIBLE... ANY OTHER IDEAS, LET ME KNOW

 

maybe some varments nibbled on some of the wires in the car, so they disconnected the grounds or power to those parts.

as for the abs and TPMS being on, well, the TPMS in the 05-06 tc uses the ABS wheel speed sensor to check the tire pressure, so that could be related.