2003 LEXUS LS430 ESP

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Page 726 of 4500

LEXUS LS430 2003 Factory Repair Manual a. With "CHEC" or "ECHN" being displayed, press the preset switch "2" to go to the detailed
information mode.
b. Press the "SEEK TRACK" switch to display the "Sy

Page 818 of 4500

LEXUS LS430 2003 Factory Repair Manual PRECAUTION
1. The automatic transmission is composed of highly precision-finished parts which need careful inspection
before reassembly because even a small nick could cause fluid leakage or affect

PRECAUTION
1. The automatic transmission is composed of highly precision-finished parts which need careful inspection
before reassembly because even a small nick could cause fluid leakage or affect performance. The
instructions here are organized so that you work on only one component group at a time. This will help
avoid confusion from similar-looking parts of different sub-assemblies being on your workbench at the
same time. The component groups should be inspected and repaired from the converter housing side.
Inspect, repair and reassemble as much as possible before proceeding to the next component group. If a
defect is found in a certain component group during reassembly, inspect and repair this group
immediately. If a component group cannot be assembled because parts are being ordered, be sure to keep
all parts of the group in a separate container while proceeding with disassembly, inspection, repair and
reassembly of other component groups. Recommended ATF: ATF WS
2. All disassembled parts should be washed clean and any fluid passages and holes should be blown through
with compressed air.
3. Dry all parts with compressed air. Never use shop rags.
4. When using compressed air, be careful not to not aim at yourself to prevent accidentally spraying ATF or
kerosene on your face.
5. Only recommended automatic transaxle fluid or kerosene should be used for cleaning.
6. After cleaning, the parts should be arranged in the correct order for efficient inspection, repairs, and
reassembly.
7. When disassembling a valve body, be sure to match each valve together with the corresponding spring.
8. New discs for the brakes and clutches that are to be used for replacement must be soaked in ATF for at
least 15 minutes before reassembly.
9. All oil seal rings, clutch discs, clutch plates, rotating parts, and sliding surfaces should be coated with
ATF prior to reassembly.
10. All gaskets and rubber O-rings should be replaced.
11. Do not apply adhesive cements to gaskets or similar parts.
12. Make sure that the ends of a snap ring are not aligned with one of the cutouts and are installed in the
groove correctly.
13. When replacing a worn bushing, the sub-assembly containing the bushing must also be replaced.
14. Check thrust bearings and races for wear or damage. Replace them as necessary.
15. Use petroleum jelly to keep parts in place.
16. When working with FIPG material, perform the following: Using a razor blade and a gasket scraper,
remove all the old packing (FIPG) material from the gasket surface.
Thoroughly clean all components to remove any loose material.

Page 1642 of 4500

LEXUS LS430 2003 Factory Repair Manual OK: Go to next step
7.CHECK WIRE HARNESS (SEAT CLIMATE CONTROL BLOWER (CLIMATE CONTROL
ECU) - SEAT CLIMATE CONTROLLER)
HINT:
When the driver side indicator is blinking, check the driver side conn

Page 1651 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 41: Identifying Seat Climate Control Blower Connector Terminals And Seat Climate
Controller Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE HARNESS AND C

Page 1660 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 46: Identifying Seat Climate Control Blower Connector Terminals And Seat Climate
Controller Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE HARNESS AND C

Page 1774 of 4500

LEXUS LS430 2003 Factory Repair Manual signal data.
Fig. 35: Display E And
- -
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WATER TEMPERATURE GAUGE:
WATER TEMPERATURE GAUGE FAIL-SAFE REFERENCE
FUEL SIGNAL (FUEL INJECTION SIGNAL):

Page 1775 of 4500

LEXUS LS430 2003 Factory Repair Manual FUEL SIGNAL (GAUGE SIGNAL) FAIL-SAFE REFERENCE
SHIFT INDICATOR:
SHIFT INDICATOR FAIL-SAFE REFERENCE
GEAR POSITION INDICATOR (1 TO 6):
GEAR POSITION INDICATOR (1 TO 6) FAIL-SAFE REFERENCE
ABS & B

Page 1776 of 4500

LEXUS LS430 2003 Factory Repair Manual AIRBAG:
AIRBAG FAIL-SAFE REFERENCE
COMPASS:
COMPASS FAIL-SAFE REFERENCE
OUTSIDE TEMP.:
OUTSIDE TEMP FAIL-SAFE REFERENCE
MULTI-INFORMATION:
MULTI-INFORMATION FAIL-SAFE REFERENCE
RHEOSTAT:

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