I get the occasional suspension fault upon start up. I turn the rig off and then press the starter button w/ the brake off, let it run through its system checks, start back up, and the fault is gone. I drive almost exclusively in normal mode. Not sure why it throws these random faults. I have noticed that if I am doing something around the parameter of the vehicle for an extended period of time (vacuuming and wiping down the interior, while standing in open doorways and behind the tailgate) the system will ask me to confirm if I want extended height mode. When I don't confirm and drive off, it will stay in normal mode and cancel the extended height mode "request". Also, my driveway has a pretty good incline up to the garage (which is full of my wife's "stuff") and when I park and walk around the front of the vehicle towards the entry to the house, the front end will occasionally drop in a purposeful manner. I can only assume this is the rigs attempt at leveling itself.
I think it may be nice to use access mode, but I am afraid of getting stuck. Not worth it to me. I might turn to that once I tick off the other boxes on my wish list and if I'm flush enough to want to sink some cash into it. Would be nice to feel like I could use it without it failing and leaving me stranded.