have a 2015 range rover sport l494 sdv6

Right, question for the experts.

I've got issues with the amk air compressor, for the suspension of my l494.

About 50% of the time, it will go down as intended to access mode, when put into park and the ignition off.

I've replaced the exhaust filter, no difference, then replaced the electronic exhaust valve (both items bought direct from my local landrover dealer), no difference.

Do you think changing all seals and the granules will finally fix it?
If it doesn't, then I'm at a loss?

The suspension soon will go up and down as it should, when the button in the centre console is pressed. Sometimes it will go into extended height, when trying to get it into access mode, but eventually I can override it.

Just drink fewer pints and spend the money saved on a new original pump

Could this actually be a problem with the suspension height sensor?
Maybe sensor gets incorrect reading when trying to enter access mode and then sends it back up to extended mode?

Drago

Where are the height sensors, and how many are there?
If you know, do you happen to have a picture showing where they are?

If more than one, is it possible to work out if 1 or indeed more than 1 might be faulty?

You have a height sensor on each suspension leg which measures the travel on each corner as the suspension is adjusted up and down.
Have you had a diagnostic check to see if any error codes have been flagged?
One thing to note, if you do need to change a sensor I believe you will need to get the suspension re-calibrated. Which will either need to been done at a main dealer/indie or with a Gap IID tool.

JLR certainly don’t make it easy for us diagnosing/fixing