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Air Suspension Service Warning

March 2018 S75D. Less than three weeks and have had 6-8 air suspension service warnings. First one "fixed" at SC by "re-calibrating the sensors". Next instance was fixed by hard reset per call to Tesla Assistance. Subsequent ones disappear after car is parked and restarted - I just quit calling.
So I started measuring height at all 4 wheels. Three measurement sets made so far at Standard, one set each at L, H and VH.
Results are attached. Maybe a cumbersome format, but shows the height irregularity across settings.
My impression - why bother with 4 levels. The total maximum height difference from L to VH is only about 1-3/4" (~4.5cm). And the L and S settings almost overlap, as do the H and VH settings. The heights at any setting differ from wheel to wheel and when measured at different times.
I need to get more measurements, but the few made seem indicative of a pretty low precision, low repeatability system.
My questions are what are the height changes supposed to be? Are they supposed to be more repeatable? Are these measurements similar to other 2017-18 MS's, or indicative of a problem per the warning pop-ups (which Tesla says are not an issue if they pop up and then go away)?
Tesla Suspension w.jpg
 
Since first post, more air suspension warnings. Tesla Service is amazing....fit the car into service schedule immediately.
First diagnosis: faulty suspension control module. They overnighted the part and installed new module. Initial test result - problem solved.
Went to pick up car - warning popped up again. New diagnosis based on events being seen in other S's nationally: faulty air compressor.
New compressor being installed tonight, test drive and air shock P checks tomorrow. Hope this solves the problem.
Tesla is going all out on addressing this, but still a bit disappointing in a 3 week old S.
Any similar problems/fixes out there?
 

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