Seem to be quite a few problems that come about with the systems, no doubt as they get old. Is there any form of maintenance that you can do to help keep things in good order? Even things that aren’t maintenance, like taking it to full
height every now and then? Changing heights often? I regularly use the access height drop, am I wearing it out or keeping it working? Mine seems to be working perfectly now and has 114k on the clock (frantically touches wood!) Id just like to keep it that way

Any tips?

Change ride height regularly was the advice I got.

Also on full height have a spray of soapy water around the base of the front air bags, any bubbles shows impending doom, none give peace of mind.

Other than that get out and enjoy it.

I use access everyday and off road for regular underbody inspections  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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As above, operate in all modes regularly.

There's an air filter and a drier for the compressor. Info in the routines in the WM. Cheers
Richard

(there are no such things as an ordinary FullFat, an ordinary cat or too many tools)
2011 TDV8 Vogue Santorini Black
Gap IIDBT

Also clean around the Base of the air bags. Sand and dirt can accumulate there, so if you jack the car up give them a good clean. That's generally what wears holes in them. Too many toys, not enough time

2011 4.4 TDV8 AB Black

^ I clean these as routine/part of our service regime... It goes like concrete so must be abrasive long term