One problem related to headlights has been reported for the 2006 Lexus ES300. The most recently reported issues are listed below.
The contact owns a 2006 Lexus ES 300. While driving various speeds at night, the headlights dim intermittently. The vehicle has been to the dealer four times, but they could not duplicate the failure or determine the cause. The vehicle has not been repaired. The VIN was unknown. The failure mileage was 40,000 and current mileage was 70,000.