Hello all. I just bought a Curt Echo for my 2015 TDI Exec, but haven't been able to get it to power on. Socket is hot and activates trailer lights just fine, but it doesn't seem that there's 12V power to the blades, which is required for the Echo (and trailer battery charging, of course). I checked the trailer fuses on the right-side panel, and they're all intact, so I'm stumped. Any suggestions would be much appreciated.