My 2021 QX50's air stopped working after I had the car 4 months. Infiniti says they do not have a fix for the problem but are aware of the problem. Told dealership to not to waste time trying to fix, because it cannot be fixed. Hopes to have a fix SOON. Well 6 months later still do not have a fix for this problem, and won't buy back my car because I have not had an unreasonable amount of times taking my car in to be fixed. Well they say they cannot fix - so I was waiting on fix (which initially was going to be 30 - 60 days). I would call and they said don't bring in we still do not have a fix. Now I am in arbitration through BBB Auto-Line (800-955-5100) trying to get them to buy back my car. If you go this route check the Lemon Laws in your state - Look in back of the manuals that came with car and there is an address to send your FINALE REPAIR NOTICE - Don't waste your time waiting on a fix that is not going to come. Evidently this has been a problem for several years.