Introduction: Other Lexus LS III рестайлинг

INDEX

1. An alphabetical INDEX article is provided at the end of the book as a reference to help you find the item to be repaired.

PREPARATION

1. Use of Special Service Tools (SST) and Special Service Materials (SSM) may be required, depending on the repair situation. Be sure to use SST and SSM when they are required and follow the working procedure properly. A list of SST and SSM is in the Preparation article of this article.

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1. A component illustration is placed under the title where necessary.
2. Non-reusable parts, grease application areas, precoated parts and torque specifications are noted in the component illustrations. Example
3. Torque specifications, grease application areas, and non-reusable parts are emphasized in the procedures. NOTE: There are cases where such information can only be explained by using an illustration.In these cases, all the information such as torque, oil, etc. are described in the illustration.
4. The installation procedures are the removal procedures in reverse order. However, only installation procedures requiring additional information are included.
5. Only items with key points are described in the text. What to do and other details are placed in illustrations next to the text. Both the text and illustrations are accompanied by standard values and notices.
6. Illustrations of similar vehicle models are sometimes used. In those cases, specific details may be different from the actual vehicle.
7. Procedures are presented in a step-by-step format: The illustration shows what to do and where to do it. The task heading tells what to do. The explanation text tells how to perform the task. It also has information such as specifications and warnings. Example

HINT

This format provides an experienced technician with a FAST TRACK to the necessary information. The task headings are easy to read and the text below the task heading provides detailed information. Important specifications and warnings are always written in bold type.

TERMS DEFINITION

TERMS DEFINITION

SI UNIT

1. The units used in this article comply with the SI UNIT (International System of Units) standard. Units from the metric system and the English system are also provided. Example: Torque:30 N.m (310 kgf.cm, 22 ft.lbf)

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1. The vehicle identification number is stamped on the vehicle identification number plate and certification label, as shown in the illustration. A: Vehicle Identification Number Plate B: Certification Label

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1. The engine serial number is stamped on the cylinder block of the engine and the transmission serial number is stamped on the housing as shown in the illustration. A: Engine Serial Number B: Transmission Serial Number

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BASIC REPAIR HINT DESCRIPTION

JACKING UP AND SUPPORTING VEHICLE

1. Care must be taken when jacking up and supporting the vehicle. Be sure to lift and support the vehicle at the proper locations (see «VEHICLE LIFT AND SUPPORT LOCATIONS»(ref-218525-S17368581452006020700000) ).

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1. Precoated parts are bolts and nuts. That are coated with a seal lock adhesive at the factory.
2. If a precoated part is retightened, loosened or moved in anyway, it must be recoated with the specified adhesive.
3. When reusing precoated parts, clean off the old adhesive and dry the part with compressed air. Then apply new seal lock adhesive appropriate to the bolts and nuts. NOTE: Perform the torque with the lower limit value of the torque tolerance.
4. Some seal lock agents harden slowly. You may have to wait for the seal lock agent to harden.

GASKETS

1. When necessary, use a sealer on gaskets to prevent leaks.

BOLTS, NUTS AND SCREWS

1. Carefully follow all the specifications for tightening torques. Always use a torque wrench.

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1. When replacing fuses, be sure that the new fuse has the correct amperage rating. DO NOT exceed the rating or use one with a lower rating.

CLIPS

1. The removal and installation methods of typical clips used in body parts are shown in the table below.

HINT

If clips are damaged during a procedure, always replace the damaged clip with a new clip.

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1. To disconnect vacuum hose, pull and twist from the end of the hose. Do not pull from the middle of the hose as this may cause damage.
2. When disconnecting vacuum hoses, use tags to identify where they should be reconnected.
3. After completing the job, double check that the vacuum hoses are properly connected. The label under the hood shows the proper layout.
4. When using a vacuum gauge, never force the hose onto a connector that is too large. Use a step-down adapter for adjustment. Once the hose has been stretched, it may leak air.

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1. If SST or an extension tool is combined with the torque wrench to extend its length, do not tighten the torque wrench to the specified torque values in this article. The actual torque will be excessive.
2. Use the formula below to calculate special torque values for situations where SST or an extension tool is combined with the torque wrench.
3. Formula: T'=T x L2/ (L1 + L2) TORQUE VALUE FORMULA DESCRIPTION T' Reading of torque wrench {N.m (kgf.cm, ft.lbf)} T Torque {N.m (kgf.cm, ft.lbf)} L1 Length of SST or extension tool (cm) L2 Length of torque wrench (cm)

FOR VEHICLES EQUIPPED WITH SRS AIRBAG AND SEAT BELT PRETENSIONER

HINT

The LEXUS LS430 is equipped with a Supplemental Restraint System (SRS) and seat belt pretensions Failure to carry out the service operations in the correct sequence could cause the SRS to unexpected deploy during servicing and lead to serious injury.

Furthermore, if a mistake is made when servicing the SRS, it is possible that the SRS may fail to operate properly. Before servicing (including removal or installation of parts, inspection or replacement), be sure to read the following article carefully.

GENERAL NOTICE

1. As the malfunction symptoms of the SRS are difficult to confirm the Diagnostic Trouble Codes (DTCs) become the most important source of information when troubleshooting. When troubleshooting the SRS, always check the DTCs before disconnecting the battery (see «CHECK MODE PROCEDURE»(ref-170398-S10430954372005011000000) ).
2. Work must be started at least 90 seconds after the ignition switch is turned to the LOCK position and the negative (-) terminal cable is disconnected from the battery. (The SRS is equipped with a back-up power source. If work is started within 90 seconds after turning the ignition switch to lock and disconnecting the negative (-) terminal cable from the battery, the SRS may deploy). When the negative (-) terminal cable is disconnected from the battery, clock and audio system memory is erased. Before starting work, make a note of the settings of each memory system. When work is finished, reset the clock and audio systems as before. CAUTION: Never use a back-up power source (battery or other) to avoid erasing system memory. The back-up power source may inadvertently power the SRS and cause it to deploy.
3. In minor collisions where the SRS does not deploy, the horn button assembly, instrument panel passenger airbag assembly, front seat airbag assembly, instrument panel lower airbag assembly, curtain shield airbag assembly and seat belt pretensioner should be inspected before further use of the vehicle (see «AIR BAG RESTRAINT SYSTEMS»(ref-170398) ).
4. Never use SRS parts from another vehicle. When replacing parts, use new parts.
5. Before repairs, remove the airbag sensor if impacts are likely to be applied to the sensor during repairs.
6. Never disassemble and repair the airbag sensor assembly, horn button assembly, instrument panel passenger airbag assembly, curtain shield airbag assembly, front seat airbag assembly, instrument panel lower airbag assembly or seat belt pretensioner.
7. Replace the center airbag sensor assembly, side airbag sensor assembly, horn button assembly or the instrument panel passenger airbag assembly, curtain shield airbag assembly, front seat airbag assembly or instrument panel lower airbag assembly if: 1) damage has occurred from being dropped, or 2) cracks, dents or other defects in the case, bracket or connector are present.
8. Do not directly expose the airbag sensor assembly, horn button assembly, instrument panel passenger airbag assembly, front seat airbag assembly, curtain shield airbag assembly or seat belt pretensioner to hot air or flames.
9. Use a voltmeter/ohmmeter with high impedance (10 kohms/V minimum) for troubleshooting electrical circuits.
10. Information labels are attached to the SRS components. Follow the instructions on the labels.
11. After work on the SRS is completed, check the SRS warning light (see «AIR BAG WARNING LIGHT DOES NOT ILLUMINATE»(ref-170398-S24448652632005011000000) ).

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1. The steering wheel must be fitted correctly to the steering column with the spiral cable at the neutral position, otherwise cable disconnection and other problems may occur. Refer to «SPIRAL CABLE»(ref-170398-S26806011382005011000000) for information about correct installation of the steering wheel.

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1. When removing the horn button assembly or handling a new horn button, it should be placed with the pad surface facing up. See illustration below. Placing the horn button with the pad surface facing down may lead to a serious accident if the airbag accidently inflates. Also, do not place anything on top of the horn button.
2. Never measure the resistance of the airbag squib. This may cause the airbag to inflate, which could cause serious injury.
3. Grease or detergents of any kind should not be applied to the steering wheel pad.
4. Store the horn button assembly in an area where the ambient temperature is below 93°C (200°F), the humidity is not high and electrical noise is not nearby.
5. When using electric welding anywhere on the vehicle, disconnect the airbag ECU connectors (4 pins). These connectors contain shorting springs. This feature reduces the possibility of the airbag or seat belt pretensioner deploying due to currents entering the squib wiring.
6. When disposing of the vehicle or the horn button assembly by itself, the airbag should be inflated using an SST before disposal (see «DISPOSAL PROCEDURES»(ref-170398-S17202277002005011000000) ). Perform the operation in a safe place away from electrical noise.

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1. Always place a removed or new instrument panel passenger airbag assembly with the airbag inflation direction facing up. Placing the airbag assembly with the airbag inflation direction facing down could cause a series accident if the airbag inflates.
2. Never measure the resistance of the airbag squib. This may cause the airbag to inflate, which could cause serious injury.
3. Grease or detergents of any kind should not be applied to the instrument panel passenger airbag assembly.
4. Store the airbag assembly in an area where the ambient temperature is below 93°C (200°F), the humidity is not high and electrical noise is not nearby.
5. When using electric welding anywhere on the vehicle, disconnect the airbag ECU connectors (4 pins). These connectors contain shorting springs. This feature reduces the possibility of the airbag deploying due to currents entering the squib wiring.
6. When disposing of a vehicle or the airbag assembly unit by itself, the airbag should be deployed using SST before disposal (see «DISPOSAL PROCEDURES»(ref-170398-S17202277002005011000000) ). Activate in a safe place away from electrical noise.

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1. Always place the removed or new curtain shield airbag assembly in a clear plastic bag, and keep it in a safe place. NOTE: Plastic bag is not re-useable. CAUTION: Never disassemble the curtain shield airbag assembly.
2. Never measure the resistance of the airbag squib. This may cause the airbag to inflate, which could cause serious injury.
3. Grease or detergents of any kind should not be applied to the curtain shield airbag assembly.
4. Store the airbag assembly in an area where the ambient temperature is below 93°C (200°F), the humidity is not high and electrical noise is not nearby.
5. When using electric welding anywhere on the vehicle, disconnect the airbag ECU connectors (2 pins). These connectors contain shorting springs. This feature reduces the possibility of the airbag deploying due to currents entering the squib wiring.
6. When disposing of a vehicle or the curtain shield airbag assembly unit, the airbag should be deployed using SST before disposal (see «DISPOSAL PROCEDURES»(ref-170398-S17202277002005011000000) ). Activate in a safe place away from electrical noise.

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1. Always place a removed or new front seat airbag assembly with the airbag inflation direction facing up. Placing the airbag assembly with the airbag inflation direction facing downward could cause a serious accident if the airbag deploys.
2. Never measure the resistance of the airbag squib. This may cause the airbag to inflate, which could cause serious injury.
3. Grease or detergents of any kind should not be applied to the front airbag assembly.
4. Store the airbag assembly in an area where the ambient temperature is below 93°C (200°F), the humidity is not high and electrical noise is not nearby.
5. When using electric welding anywhere on the vehicle, disconnect the airbag ECU connectors (2 pins). These connectors contain shorting springs. This feature reduces the possibility of the airbag deploying due to currents entering the squib wiring.
6. When disposing of a vehicle or the airbag assembly unit by itself, the airbag should be deployed using SST before disposal (see «DISPOSAL PROCEDURES»(ref-170398-S17202277002005011000000) ). Activate in a safe place away from electrical noise.

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1. Always store a removed or new instrument panel lower airbag assembly with the airbag inflating direction facing upward. Placing the airbag assembly with the airbag inflation direction facing downward could cause a serious accident if the airbag inflates.
2. Never measure the resistance of the airbag squib. This may cause the airbag to inflate, which could cause serious injury.
3. Grease or detergents of any kind should not be applied to the front seat airbag assembly.
4. Store the instrument panel lower airbag assembly where the ambient temperature remains below 93°C (200°F), without high humidity and away from electrical noise.
5. When using electric welding, first disconnect the airbag connector (2 pins) installed on the instrument panel lower airbag assembly before starting work.
6. When disposing of a vehicle or the instrument panel lower airbag assembly alone, the airbag should be inflated using an SST before disposal (see «DISPOSAL PROCEDURES»(ref-170398-S17202277002005011000000) ). Perform the operation in a safe place away from electrical noise.

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1. Never measure the resistance of the seat belt pretensioner. This may cause the seat belt pretensioner to activate, which could cause serious injury.
2. Never disassemble the seat belt pretensioner.
3. Never install the seat belt pretensioner on another vehicle.
4. Store the seat belt pretensioner in area where the ambient temperature is below 80°C (176°F), the humidity is not high and electrical noise is not nearby.
5. When using electric welding anywhere on the vehicle, disconnect the airbag ECU connectors (2 pins). These connectors contain shorting springs. This feature reduces the possibility of the airbag deploying due to currents entering the squib wiring.
6. When disposing of a vehicle or the seat belt pretensioner unit by itself, the seat belt pretensioner should be activated before disposal (see «DISPOSAL PROCEDURES»(ref-170398-S17202277002005011000000) ). Activate in a safe place away from electrical noise.
7. As the seat belt pretensioner is hot after being activated, allow some time for it to cool down sufficiently before disposal. Never apply water to try to cool down the seat belt pretensioner.
8. Grease, detergents, oil or water should not be applied to the front seat outer belt.

PLACE FOR REMOVING AND INSTALLING OF FUEL SYSTEM PARTS

1. Work in a place with good air ventilation that does not have welders, grinders, drills, electric motors, stoves, or any other ignition sources.
2. Never work in a pit or near a pit as vaporized fuel will collect in those places.

REMOVING AND INSTALLING OF FUEL SYSTEM PARTS

1. Prepare a fire extinguisher before starting operation.
2. To prevent static electricity, install a ground on the fuel changer, vehicle and fuel tank, and do not spray the area with water. The work surface will become slippery. Do not clean up spills with water as this will spread and gasoline and create a fire hazard.
3. Avoid using electric motors, working lights and other electric equipment that can cause sparks or high temperatures.
4. Avoid using iron hammers as they may create speaks.
5. Dispose of fuel-contaminated shop rags separately using a fire resistant container.

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1. If any metal particle enters the inlet pass, this may damage the engine.
2. When removing and installing the inlet system parts, cover the openings of the removed parts and engine openings. Use clean shop rags, gummed tape, or other suitable materials.
3. When installing the inlet system parts, check that no metal particles have entered the engine or the installed part.

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1. Before removing the hose, check the clamp position so that it can be reinstalled in the same position.
2. Replace deformed or dented clamps with a new one.
3. When reusing a hose, attach the clamp on the clamp track portion of the hose.
4. For a spring type clamp, you may want to spread the tabs slightly after installation by pushing in the direction of the arrow marks as shown in the illustration.

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1. Install the antenna as far away from the ECU and sensors of the vehicle electronic systems as possible.
2. Install an antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the vehicle electronic systems. For details of the ECU and sensors locations, refer to the article on applicable components.
3. Keep the antenna and feeder separate from other wirings as much as possible. This will prevent signals from the communication equipment from affecting vehicle equipment and vice-versa.
4. Check that the antenna and feeder are correctly adjusted.
5. Do not install any high-powered mobile communication system.

FOR VEHICLES EQUIPPED WITH TRACTION CONTROL (TRAC) SYSTEM

When testing with a 2-wheel drum tester such as a speedometer tester, a combination tester of the speedometer and bracket a chassis dynamometer, or when jacking up the front wheels and driving the wheels, always turn the TRAC system OFF beforehand via the TRAC OFF switch before testing.

Note. TRAC system OFF condition can be confirmed by the "TRAC OFF" warning indicator lamp in the combination meter.

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1. Confirm TRAC system is OFF Press the TRAC cut switch (TRAC OFF) to turn off the TRAC system. Check if the TRAC OFF indicator lamp illuminates. HINT: The SLIP indicator lamp should always operate right after the engine is restarted. Begin testing. Press the TRAC cut switch to turn on the TRAC system and check that the TRAC OFF indicator lamp turns off. HINT: The SLIP indicator lamp blinks when the TRAC system is operating.

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1. Before beginning testing, disable the Vehicle Skid Control system (VSC). To disable the VSC, turn the ignition switch OFF and connect SST to terminals TS and CG of the DLC3. SST 09843-18040 NOTE: Confirm that the VSC warning lamp blinks. VSC system will be reset when the engine is started. For safety, secure the vehicle with restraint chains while using a wheel dynamometer.

FOR VEHICLES EQUIPPED WITH CATALYTIC CONVERTER

1. Use only unleaded gasoline.
2. Avoid prolonged idling. Avoid idling the engine for more than 20 minutes.
3. Avoid a spark jump test. Perform a spark jump test only when absolutely necessary. Perform this test as rapidly as possible. While testing, never race the engine.
4. Avoid a prolonged engine compression measurement. Engine compression measurements must be performed as rapidly as possible.
5. Do not run the engine when the fuel tank is nearly empty. This may cause the engine to misfire and create an extra load on the converter.

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1. When performing operations which involve the removal and installation of the propeller shaft, always check the joint angle. Make adjustments if necessary (see «OVERHAUL»(ref-209423-S17472184022005121000000) ).

INITIALIZATION

Note. When disconnect the negative (-) battery terminal, initialize the following systems after the term' is reconnected.

SYSTEM NAME AND STEP NO

INITIALIZE FRONT POWER SEAT CONTROL SYSTEM

1. The power seat ECU must be initialized under any of the following conditions. The battery is disconnected. The D/C cut fuse is replaced. The power seat switch (power seat ECU) is replaced. The power seat assy is removed from the vehicle.
2. Initialize the power seat ECU as follows. Using the seat switches, fully slide the seat forward, fully recline the seatback forward, and fully raise the seat cushion and headrest. Using the seat switches, fully slide the seat rearward, fully recline the seatback rearward, and fully lower the seat cushion and headrest.

CUSTOMIZE PARAMETERS

HINT

following can be customized.

Note. After confirming whether the items of the customer's request are applicable or not for the customized items, perform the customize operation. Be sure to record the current value before customizing. In case of performing the troubleshooting, pay attention as there is a possibility that the function is OFF by customizing. (Example: In case of the symptom in which "The wireless operation does not function "is displayed, check that the wireless operation is not OFF by customizing, then perform the troubleshooting.)

TILT & TELESCOPIC

TILT & TELESCOPIC CUSTOMIZE PARAMETERS

AIR CONDITIONER

AIR CONDITIONER CUSTOMIZE PARAMETERS

ILLUMINATED ENTRY

ILLUMINATED ENTRY CUSTOMIZE PARAMETERS

LIGHT CONTROL

HINT

Sensitivity adjustment can hardly be confirmed. Check by driving the customer's vehicle.

LIGHT CONTROL CUSTOMIZE PARAMETERS

Illustration of

ILLUSTRATION OF NO 1 REFERENCE

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WIPER

WIPER CUSTOMIZE PARAMETERS

ILLUMINATED ENTRY CUSTOMIZE PARAMETERS

Power window control system

POWER WINDOW CONTROL SYSTEM CUSTOMIZE PARAMETERS

WARNING

WARNING CUSTOMIZE PARAMETERS

SENSOR

SENSOR CUSTOMIZE PARAMETERS

DISPLAY

DISPLAY CUSTOMIZE PARAMETERS

FRONT POWER SEAT

FRONT POWER SEAT CUSTOMIZE PARAMETERS

Theft warning ECU

THEFT WARNING ECU CUSTOMIZE PARAMETERS

WIRELESS DOOR LOCK (w/ Smart Key)

WIRELESS DOOR LOCK (W/SMART KEY) CUSTOMIZE PARAMETERS

WIRELESS DOOR LOCK (w/o Smart Key)

WIRELESS DOOR LOCK (W/O SMART KEY) CUSTOMIZE PARAMETERS

THEFT WARNING ECU CUSTOMIZE PARAMETERS

Meter ECU

METER ECU CUSTOMIZE PARAMETERS

METER ECU CUSTOMIZE PARAMETERS

METER ECU CUSTOMIZE PARAMETERS

Sliding roof

SLIDING ROOF CUSTOMIZE PARAMETERS

Theft deterrent system

THEFT DETERRENT SYSTEM CUSTOMIZE PARAMETERS

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CUSTOMER PROBLEM ANALYSIS

HINT

1. In troubleshooting, the problem symptoms must be confirmed accurately. Preconceptions should discarded in order to give an accurate judgement. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time it occurred.
2. As much information as possible should be gathered for reference. Even past problems that seem unrelated may help in some cases. In the Diagnostic article, a customer problem analysis table is provided for each system.
3. 5 items are important points in the problem analysis

Important Points with Customer Problem Analysis

1. What---Vehicle model, system name
2. When---Date, time, occurrence frequency
3. Where---Road conditions
4. Under what conditions?---Running conditions, driving conditions, weather conditions
5. How did it happen?---Problem symptoms

(Sample) Supplemental Restraint System check sheet.

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GLOSSARY OF SAE AND LEXUS TERMS

This glossary lists all SAE-J1930 terms and abbreviations used in this article in compliance with SAE recommendations, as well as their LEXUS equivalents.

GLOSSARY OF SAE AND LEXUS TERMS AND ABBREVIATIONS