Air Suspension problem

I have an annoying intermittent problem on my air suspension. I have a 2005 Diesel Range Rover Vogue and every day my dashboard shows air suspension inactive and the light on the control goes out. Sometimes the vehicle drops height other times it doesn't. The fault may or may not happen, it rectifies itself and then happens again, when it rectifies I can use the control to raise or lower the air suspension as normal. I feel it is something electrical, sensor or even a battery power supply problem, nothing exact provided on a diagnostic.
I also have a faulty rear window at the minute that just needs putting back onto the mechanism but at the minute slips down, would this cause a drain on the battery and indirectly affect the power to the air suspension?
Any ideas appreciated!

@Landy2019
Eas faults could be all manor of things from low volts too blown air bags, best to post in the Range rover section you get more help.
first rule of range rover fault finding is start with a known good battery.
https://www.landyzone.co.uk/forum/range-rover.10/

brianp38dse said:

@Landy2019
Eas faults could be all manor of things from low volts too blown air bags, best to post in the Range rover section you get more help.
first rule of range rover fault finding is start with a known good battery.
https://www.landyzone.co.uk/forum/range-rover.10/

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Thanks Brian, appreciated. I have a guy telling me its a leak on the pressure but I can't see how that would be intermittent and sometimes never happen at all.

Have you read any codes, or looked at the live data for the gallery pressure, pump temperature and other live suspension data is within spec.

No codes. Where do I get the live data? The onboard computer in the centre of the dash doesn’t show anything unusual. Thanks for your reply.

Landy2019 said:

No codes. Where do I get the live data? The onboard computer in the centre of the dash doesn’t show anything unusual.

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An LR specific multi module code reader will give codes and live data from the multiple modules fitted to these vehicles.

Landy2019 said:

Thanks Brian, appreciated. I have a guy telling me its a leak on the pressure but I can't see how that would be intermittent and sometimes never happen at all.

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If it's a bag leaking I could be on a fold and sometimes it's open and some times not at all . Is there a way to put in high then disable the air suspension then see if it drops one corner.