I have a 2004 GX470 that has started making an annoying noise. It is the air compressor for the leveling system that turns on at random times. It cycles on when you first start it and then several times in a 15 minute drive. We have had this vehicle since new and just noticed it starting to do this a month or so ago, before that we rarely ever heard it. Is it a leak in the air shock/strut, lines or maybe the compressor it self? I have not taken it to the dealer as I'm sure they will come up with a high dollar cure for what ever it is.
I would appreciate hearing from anyone with knowledge and/or experience on this.
Thanks.
Don (first time poster)
