TSB: REVISION NOTICE October 11, 2016 Rev1: ? Applicability has been updated to include 2011 ? 2015 model year RX 330 and RX 350 vehicles. Any previous printed versions of this bulletin should be discarded. Some RX 330/350 vehicles may exhibit a rattle or buzz type noise coming from the driver?s side instrument panel area. The noise can be duplicated when lightly accelerating and then decelerating, or when depressing the brake pedal with the shift lever in Park and then releasing the brake pedal. An improved vacuum check valve is now available to reduce this noise.
