SLS Warning lights after sensor change

Hi all, I hope you can help me.

We have a Discovery TD5 which has been having a couple of suspension faults recently.

It started with the passenger side rising up to the maximum height which I diagnosed as a faulty ride height sensor. While I was waiting for a new sensor to arrive, got both sides level by letting air out of the high air bag and using the nanocom to set the SLABS to coil mode. This worked fine, but we had to pump it up once by bypassing the relay and using the nanocom to turn on the left hand SLS valve.
The new ride height sensor arrived today and I fitted it fine. I changed the suspension type back to air and then I went into the nanocom SLABS input page and it shows the sensor value changing as the height changes. I calibrated it fine and using the nanocom in the settings part of the menu, I set the left and right values to points where the suspension was level. when i pressed store settings, the compressor ran and levelled both sides I could hear the compressor running for both the left and right sides.

I waited the 60 seconds it advised with the ignition off for the settings. Now, when I turn on the ignition I get 2 suspension amber lights (on the bottom left and top right) showing and the compressor doesn't kick in if I let any air out of the system, but it drives fine and I don't get any chimes.

Does anyone know if I've missed a step? Any help would be greatly appreciated.

OK, after trying lots of things it's working!

Just in case anyone else has this problem I'll list out what I did to get rid of the lights (some of these things might not be needed, but it's what I did to make it work!)

1. turn on ignition but don't start engine
2. plug in Nanocom and go to SLABS settings
3. in SLABS setting on the nanocom I set test status to disabled and transport mode to enabled (ECU calibrated was showing yes and type was air)
4. write settings. when the page asking you to turn off the ignition for 60 seconds comes up, turn off the ignition but don't press ok
5. after at least 60 seconds disconnect the nanocom and then turn on the ignition
6. the car now drops to its bump stops.
7. in SLABS settings set test status to enabled and transport mode to disabled - write to ECU, wait 60 seconds, disconnect nanocom
8. ignition on, connect nanocom go to SLABS utilities and raise each side until they are both the right height
9. click write settings, when the page asking you to turn off the ignition for 60 seconds comes up, turn off the ignition but don't press ok
10. after at least 60 seconds disconnect the nanocom and then turn on the ignition

After that, it works fine! As I said above, I'm sure that not all the steps above are needed, but I'm not going to break it again to find out what bits are unnecessary!

Hi. It's in my red signature why i didnt answer from the beginning but i can't let others to follow your guide cos it's completely wrong and if it works now for you it is cos you were lucky at a point without even knowing when...
1. no need to mess with the "test" status on a used unit, it should be enabled by default
2. for calibration only steps 8-9 are needed provided it's set to air from the beginning

*** the IMPORTANT thing is: when after some actions nanocom asks for ignition off the OK must be pressed before turning ignition off then after 60 seconds disconnected