6 LS430 − OUTLINE OF NEW FEATURES 5. 3UZ-FE Engine 6. A761E Automatic Transmission A newly developed A761E 6-speed automatic transmission [6 Super ECT (Electronic Controlled Transmission)] has been adopted. For details, see page 18. 7. Drive Shaft The drive shaft and the differential side gear, which were previously joined with bolts, have been changed to an integrated construction of the differential side gear shaft. Diff. Side Wheel Side ’04 LS430 259LSW09 Diff. Side Wheel Side ’03 LS430 259LSW10 Service Tip Along with the aforementioned change, the procedure for removing the drive shaft and differential has been changed. For details, see the 2004 LEXUS LS430 Repair Manual (Pub. No.
RM1048U). Item Outline See Page Cooling System The engine coolant has been changed to extend the maintenance interval from TOYOTA Genuine LLC (Long Life Coolant) to TOYOTA Genuine SLLC (Super Long Life Coolant). See page 2 Engine Control The ECM software has been changed in conjunction with the changes made to the automatic transmission. — The knock sensor has been changed from the resonant type to the non-resonant type. See page 16 Protocol of ECM has been changed from BEAN (Body Electronics Area Network) to CAN (Controller Area Network). See page 100 The diagnosis communication has been changed from serial communication to CAN communication.
As a result, a dedicated adapter [CAN-VIM (Vehicle Interface Module)] must be attached to the conventional hand-held tester in order to read the DTC of the ECM. For details, see the 2004 LEXUS LS430 Repair Manual (Pub. No. RM1048U). —