You can only use trail turn assist when the system is in four-wheel drive high (4H), or four-wheel drive low (4L) mode.
You cannot use trail turn assist with the rear differential engaged. If the system detects that the rear differential has recently been engaged, it may not activate trail turn assist until it can confirm that the rear differential is disengaged.
If the vehicle’s rear differential is engaged when pressing the trail turn assist button, the rear differential will attempt to disengage to allow for trail turn assist operation.