Looking to buy range rover for friend. What are the ways to see faulty air suspension[/u]

Lop sided car (higher / lower on one side compared to the other), activate the ride height button and see if you get any warnings in the dash about slow raising, check in the 4x4 info screen that there are no red bars showing above each wheel, sometimes you can hear strange noises as the car raises or lowers. It should go up evenly all round, should not go down/ up like a camel, one end first then the other. Sometimes you can hear air leaks from compressor or lines. After leaving the car overnight in Normal height check that it hasn't settled down to access mode, any warning on the dash that the compressor is working hard - can be compressor overheating. It is also better for the car if you don't have the car completely stationary when adjusting the ride height and be sure that the parking brake is off on L320/ RRS1 if you are raising and lowering the car several times in quick succession. 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
2018 Melting Silver Mini Countryman PHEV - soon to be replaced
2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW

Tim,I may well be wrong here but I thought the Rear should raise first slightly when rasing suspension, and when lowering the Front should lower first so as not to dazzel other vehicles when changing heights if the lights were on. Thinking about it though it could of been my old P38 that did it

Cheers
Col

You may be right there - the important word is "slightly" which was why I compared it to a camel kneeling down. It is so slight that you should hardly notice it. 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
2018 Melting Silver Mini Countryman PHEV - soon to be replaced
2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW

Hi Tim, sorry didn't mean to sound as having a go, probably never worded it very well.

Cheers
Col