So I noticed something really strange with my 2019 Navigator over the weekend, when I parked it in the garage and came back a few hours later, the whole vehicle was visibly leaning to the left rear corner, almost like that tire had gone flat but when I checked the pressure it was perfectly fine. I started the engine and after a few minutes the car leveled itself out, which made me think it must be something to do with the air suspension system rather than a mechanical issue with the springs or shocks. This has happened a couple more times since then, always on the same corner, and I can hear this faint hissing sound coming from that area after I switch off the engine, which I'm pretty sure is air slowly escaping from somewhere. I've been reading up on these systems and apparently the air struts can develop tiny leaks that aren't always obvious until they get bad enough to cause the car to sag noticeably. The car still drives fine once it's leveled out, but I'm worried that if I ignore this, the compressor might end up burning out from constantly having to top up the system, and then I'll be looking at a much more expensive repair. A colleague at work mentioned that he had a similar issue with his Continental and found a workshop that could actually get the parts and do the work on the same day, which would be ideal for me because I can't really afford to be without the car for days on end. I've been looking for a Same day Lincoln suspension service in Al Wasl since that area is convenient for me, and I'm hoping they can properly diagnose exactly where the leak is coming from and sort it out without too much hassle. Has anyone else experienced this kind of sagging issue on their Navigator or even an Expedition, and did it turn out to be the strut itself or was it something simpler like a cracked air line or a faulty O-ring? Also, roughly what did the repair end up costing and were they able to get the parts locally or did they have to order them? I really want to get this sorted before it becomes a bigger problem, so any advice would be massively appreciated.