I have a 2004 lexus gx470 with 75,000 miles that I purchased new. Last week I was driving home on a side street in Brea CA and for no apparent reason I had no brakes. I used the emergency brake to slow and finally stop but could have easily been killed or killed others if this had happened on the freeway. I am not aware that any brake problem should happen in a life threatening way. Vehicle was towed to Longo Lexus who is charging me over $1,000.00 to repair.