if you have the owners manual. Look up tail light, stop light, towing, towing relay, gauges, for example if the VSC fuse goes bad the ABS light will come on. Also, how about your battery, All connections tight? While it could be something unrelated. I am focusing on the fact that you were towing. Can you ask someone to help check your brake lights, tail lights, blinkers, hazard lights, include the same on your trailer. There are several 30amp fuses that relate to towing.
There is another fuse/relay panel in the engine compartment.
The attached wiring manual covers to 2007. Also, disconnect the trailer harness to see if anything changes.
Good luck.
If you isolate the systems/functions that are not working. It may be easier to locate the root cause.