One problem related to front air bag has been reported for the 2004 Lexus ES330. The most recently reported issues are listed below.
When I tried to stop and turned right on a side street the car's brake didn't work and the car even accelerated itself. It didn't stop even I pressed the brake until it hit a street sign and knocked the tree down on the sidewalk. The air bag didn't come out after the crash neither. The car was a total lost after this accident.