I also have a hairline crack just like yours starting from the left side of the instrument panel to the right side of the instrument panel. I'm beginning to wonder whether this defect is common on GX470s. I bought a platinum Extended warranty plan thru Lexus when I bought my 2003 GX but they refuse to repair it.
Their explanation was that it "does not effect the safetiness to operate the vehicle". When the dealer sold us the warranty, they told us that the platinum plan would cover bumper to bumper. I am very disappointed because I felt cheated. I believe Lexus should come forward and acknowledge this defect and take care of the rapair.
