Owners of 2007-09 Lexus ES350 models may come into your store with a complaint of brake pedal pulsation or a vibration through the steering wheel when the brakes are applied at highway speeds. Lexus attributes the problems to excess thickness variation in the front rotors.
Overly aggressive front brake pad linings are the ultimate villains. Machining the rotors and installing revised front brake pads, part No. 04465-33470, should eliminate the braking issues.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via email at [email protected].