Removal & Installation (LS430)
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.
Distributorless Ignition System (DIS) uses 8 ignition coils with internal ignitors, one ignition coil/ignitor for each cylinder. Remove engine cover and battery cover. Remove intake air connector located between throttle body and air cleaner assembly. Disconnect ignition coil/ignitor connector. Remove bolt and ignition coil/ignitor. To install, reverse removal procedure. Tighten ignition coil/ignitor bolt and nuts to specification. See TORQUE SPECIFICATIONS .