Finally broke down and got a IIGAP tool for my 2016 LR4
here are the faults listed under suspension area
C1A33-01 (6C) Rear left corner valve
U0102-00 (2F) Lost communication with transfer case control module
C112F-72 (28) Air spring valve - Mechanical failure - actuator is stuck open

Rides fine. sits at normal height. Just cant raise or lower it with a "only normal ride height available" fault coming on.
Which side is rear left? is that passenger or driver side?
Any help with this is greatly appriecated

 

Sorry for the delay. Rear left is drivers side. Sounds like that height sensor maybe be going, or the rear air block. See if a suspension height calibration helps before you start replacing parts. The GAP IIID tool will walk you through it, but you're going to need a cloth measuring tape that displays mm. If you havent already, download the GAP manual.

 

nUpdate. i tried to calibrate height using the Gaptool. could do all corner except fro drivers rear.
I replaced the Drivers side rear ride height sensor. Also took rear valve block off. one of the connections had a slight crack. so i fixed the line. (pain the *** that was)
Due to removing air line temporaly the rear was down on the bump stops. but i cant get it to raise back up at all.
The screen keeps saying "suspension fault" and System not in customer mode
i tried re enabling the EAS with the GAP tool but it doesnt seem to be working
How do i get the system back into normal mode
How do i repressurize the system?

Now im getting these codes under the suspension
U0102-00 (2F) Lost communication with transfer case module
U3000-1D (AF) Control Module- General electrical failure - circuit current out of range
U3000-05 (AF) Control Module- General failure information - system programming failure

 

So right now the its sitting on the bump stops and i cant get it to raise back up.
The screen keeps saying "suspension fault" and System not in customer mode
i tried re enabling the EAS with the GAP tool but it doesnt seem to be working
How do i get the system back into normal mode?
I tried testing all the values with Gap tool. Sounds like they are trying to work. Compressors make sound and a hear humming noise.
I also tried using the height control with gap tool to raise it up but it just flashes red. Does this mean the compressor is bad?

2016 LR4

 

I did a quick Google search and "u3000-05 range rover" came up. Looks like it might be stuck in tight tolerance mode. Try toggling the settings from transport or tight tolerance to normal. There were also a bunch of videos that you may try. I'm sorry that I couldn't be more helpful

 

the problem ended up being my rear air block located right by the rear drivers side wheel. I replaced the valve/block and issue went away