2003 LEXUS LS430 transmission oil

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.

Clean both sealing surfaces with a non-residue solvent.
Parts must be reassembled within 10 minutes of application. Otherwise, the packing (FIPG) material must
be removed and reapplied.
ADJUSTMENT
1.BEFORE TRANSMISSION FILL
This transmission requires Toyota Genuine ATF WS transmission fluid.
After servicing the transmission, you must refill the transmission with the correct amount of fluid.
Fig. 1: Identifying Transmission Case Cover Bolts

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Maintain the vehicle in a horizontal position while adjusting fluid level.
Proceed to step 2 if you replaced the transmission pan, drain plug, valve body and/or torque
converter.
Proceed to step 3 after removing the two bolts, transmission case cover and refill plug if you
replaced the transmission hose, output shaft oil seal and/or radiator.

HINT:
If you cannot add the listed amount of fluid, do the following:
1. Install the refill plug.
2. Allow the engine to idle with air conditioning OFF.
3. Move the shift lever through entire gear range to circulate fluid.
4. Wait for 30 seconds with the engine idling.
5. Stop the engine.
6. Remove the refill plug and add fluid.
7. Reinstall the refill plug.
4.FLUID CIRCULATION
a. Allow the engine to idle with the air conditioning OFF.
b. Move the shift lever through entire gear range to circulate fluid.
5.FLUID TEMPERATURE CHECK
a. With hand-held tester
1. Connect the han
d-held tester to the DLC3.
Output shaft oil seal replacement0.4 liters (0.42 US qts, 0.35 Imp. qts)
Transmission pan and drain plug removal1.3 liters (1.37 US qts, 1.14 Imp. qts)
Transmission valve body removal3.9 liters (4.12 US qts, 3.43 Imp. qts)
Torque converter replacement5.3 liters (5.60 US qts, 4.66 Imp. qts)
Entire transmission assembly7.2 liters (7.61 US qts, 6.34 Imp. qts)

Fig. 27: Removing 2 Bolts And Clamps
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Loosen the union nut and separate the oil cooler inlet tube No.1.
26.SEPARATE OIL COOLER OUTLET TUBE NO.1
a. Loosen the union nut and separate the oil cooler outlet tube No.1
27.SEPARATE FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSY
a. Remove the nut and separate the floor shift gear shifting rod.
Fig. 28: Removing Nut And Separating Floor Shift Gear Shifting Rod

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
28.SUPPORT AUTOMATIC TRANSMISSION ASSY
a. Support the automatic transmission assy with a transmission jack.
29.REMOVE ENGINE REAR MOUNTING MEMBER
a. Remove the 4 bolts and separate the engine rear mounting member.

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Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
d. Turn the torque converter clutch assy and align the matchmarks on the torque converter clutch assy
and transmission case to engage the key of the oil pump drive gear into the slot on the torque
converter clutch assy.

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
REPLACEMENT
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030057004b004800030052004f004700030029002c0033002a[ material from the gasket surfaces.
Thoroughly clean all components to remove any loose material.
Clean both sealing surfaces with a non-residue solvent.
Apply FIPG in a continuous line width approximately 1 mm (0.04 in.) along the sealing surface.
Parts must be assembled within 10 minutes of application. Otherwise, the FIPG material must be
removed and reapplied.
1.DISCONNECT BATTERY NEGATIVE TERMINAL
2.DRAIN AUTOMATIC TRANSMISSION FLUID
a. Remove the drain plug, gasket and drain the ATF.
b. Install a new gasket and the drain plug.
Torque: 20 N.m (205 kgf.cm, 15 ft.lbf)
3.REMOVE AUTOMATIC TRANSMISSION OIL PAN SUB-ASSY
a. Remove the 20 bolts, oil pan and
gasket.

Fig. 61: Removing 3 Magnets From Oil Pan
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. Examine particles in pan.
1. Collect any steel chips with the removed magnets. Carefully look at the foreign objects and
particles in the pan and on the magnets to guess at the type of wear which might be found in
the transmission. Steel (magnetic) hellip bearing, gear and clutch plate wear
Brass (non-ma
gnetic) hellip bushing wear

Fig. 64: Removing O-Ring From Oil Strainer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
5.DISCONNECT TRANSMISSION WIRE
a. Remove the bolt and lock plate, and separate the ATF temperature sensor.
b. Remove the 2 bolts and 2 clamps.
c. Separate the 9 connectors from the solenoid valves.