E70 X5 suspension problem?

[Luke.]

Morning all, last week the rear passenger side dropped down on it's suspension.

Turned the car on, compressor whirred into action and the suspension was back to normal.

Now the suspension hasn't dropped again since. Just wondered if anyone else has had a random drop and what might have caused it.

Edited by Luke. on Tuesday 28th June 10:21

[Luke.]

Nope, no 3rd row of seats, but def air suspension. BMW have quoted £650 to replace just the one. Gits.