Removal & Installation (LX470)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 Lexus SC 430, 2003 Lexus RX 300, 2003 Lexus LX 470, 2003 Lexus LS 430, and 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
One sensor is located in each exhaust manifold and one sensor is located behind each catalytic converter. See Fig 1. Disconnect connectors. Remove 2 bolts and sensor 2. Remove sensor 1. To install, reverse removal procedure. Tighten sensor 1 and sensor 2 bolts to specification. See TORQUE SPECIFICATIONS .