One problem related to air conditioner has been reported for the 2004 Lexus GX470. The most recently reported issues are listed below.
My 2004 Lexus Gx470 is garage kept and the dash has several cracks. One around the instrument panel and one above the air conditioning vents and one the passenger side. I keep my dash conditioned and my car is very well maintained. Despite my efforts the cracks continue to get worse. This started a few years ago and continues to progress. I am afraid that will effect the integrity of the airbags should they deploy.