Red Suspension Fault 2006 LR3 SE

Ok, so I replaced the compressor and that corrected the issue I was having. it worked great for a couple of weeks. Then,,, the red suspension fault light comes on. Dropped to the bump stops. Not driving anymore for now. Ideas, why the red fault light? Does it define where to look for the issue? Any and all help is appreciated. TIA

Did it happen while driving a certain speed, or right at startup?

At start up was yellow indicator then once I tried to accelerate it changed to red with the do not drive over 30 mph warning.

Hmmm...did you put in an AMK or Hitachi? If AMK, did you replace the relay and do the software update?

Did you recalibrate the suspension? Or...can you check the calibration and note the values? See if any are out-of-wack...?

It is coming on for about 10-15 secs then it stops. Replaced with a exact match hitachi. Need to learn how to check the calibrations and the measurements. I bet that's what it is.

Do you have an IIDTool?

No IID Tool. Truck is on the bumper stops so no measurement is possible right now.

So I had a similar issue that turned out to be a rear sensor, without a IID tool the easiest way to diagnose is to put the 4x4 on the display and you're likely to see one of the wheels not in alignment, that will be the culprit.

Just another thought...since this happened to mine...aside from the sensors - it might be that the system is internally leaking back into the tank. My front was doing this for about a month before it just stayed on the bump stops. Thought it was the pump and turned out to just be the valve blocks needing new o-rings. pretty straightforward swap and the orings can be found as a set at britishpartsofutah for like 30 bucks or something like that for all 3 valve blocks...I only swapped out the fronts but I can tell the middle and rear valves need it here before camping / towing season hits. Usually this is a slow process and you'll notice one axle dropping if its the front or rear and the whole truck dropping equally if its the center block...if it's a rapid drop then most likely its a sensor though. (I've had a loose connection to my rear right come out completely while driving and it basically flashes the red light and drops within 30 seconds or so...why LR decided that was the best course instead of just hold its current position is beyond me but just my experience so far.

your first step is getting a diagnostic scan done because there are a number of different issues that can cause the red suspension light to illuminate like a faulty height sensor / valve block /blown fuse, heck it could even be a wiring issue .