2013 NAV Transmission Issues - Blinking "PRND" - CEL Code P1807

Hey Guys!

First time poster here. Just bought a 2013 NA Veloster with 74k miles on it. I was really excited to join such an enthusiastic community for this car even before considering the Veloster in the first place. Seems like everyone is extremely supportive and that's awesome!

But 2 days after purchasing, I had the following issue with what appeared to be a transmission issue. My car would not shift out of 1st gear and the "D" for Drive on the dash began blinking. Pulled over, turned the car off, turned it back on, and got a CEL with the same blinking "D". Pulled battery terminals, reconnected, tried again. Same issue. Had it towed since I had no clue what the issue was and I was about 30 minutes away from home. When I got home, I ran my code reader and got P1807. The internet says this code is the following:





Took it in to my Hyundai dealership. I actually drove it over since I am right across the street from them (thank God). No errors. I was trying to keep it in 1st but it actually shifted to 2nd a couple times. Dealership could not replicate the issue.

The same day I get it back, I put it in Reverse to back out of my driveway and the "R" is blinking. The engine will rev but is not in gear. There is separate thread about this issue but no solution. (Blinking R)

I have it scheduled to bring back next week to see if they can find the issue but I wanted to see if anyone had some knowledge of this problem in the mean time. I've attached a video where I was able to replicate the issue firsthand. You should be able to see how the car behaves quite clearly. Also note the fluid around what appears to be a transmission mount and around possibly the clutch position sensor (actuator?).


Any help would be greatly appreciated!

Thanks,

Clayton