Disabling Air Suspension System (LS430)
Turn ignition off when jacking or hoisting vehicle. If it is necessary to have ignition on (engine running) when jacking or hoisting vehicle, connect a jumper wire between Data Link Connector No. 3 (DLC3) terminals Tc and CG. DLC3 is located unde left side of instrument panel. See Fig 1. Turn ignition switch ON and raise vehicle.