TSB: REVISION NOTICE November 20, 2019 ? Applicability has been updated to include 2019 model year RX350 vehicles. March 30, 2018 Rev1:
? The Warranty Information section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2016 ? 2017 model year GS350 and 2016 ? 2019 model year RX350 vehicles may exhibit a knocking noise from the vacuum pump. Follow the Repair Procedure in this bulletin to address this condition.
