I saw the instructions that you need to follow to set up trailer specs in the surround camera system memory (the surround camera system option is delayed until year end build dates due to an apparent manufacturing issue or shortage, by the way.) It's no rocket science, but no cakewalk either to do it right. You need to apply "target stickers" to the trailer in specific, camera friendly locations, measure and teach the system stuf such as hitch length, number of trailer axles, trailer wheels width... Not exactly plug and play operation, although you only need to set up a trailer once, I guess. Excerpt from the instructions: