I purchased my 2007 LX470 in June. I started hearing this annoying vibratory noise at idle and when I drive at certain speeds. Usually when I cruise at 50 to 60 miles. When I talked to the main techs at Lexus they tell me the noise is normal and this noise exsists in all the LX470. Because the noise is normal they will not do anything to fix the problem. However in my case, they took it twice already for repairs. They changed some exhaust system to say now the noise is fixed, but the same annoying noise is still there. They don't even want me to drop it off again because the noise is "normal". Lexus is fully aware of this noise, but because they can't fix it, they keep telling you the noise is normal. The service techs have said "off the record", they would never purchase the LX470. I am considering further action, but am curious to see if there are other LX470 owners who have had similar problems. I have been told by a Lexus tech that the newer version LX570 no longer has this noise issue.
