Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Lexus LS 500 Base, RWDFACTORY OEM SERVICE PROCEDURE
Components [12/2017 - ]
| *A | for 2WD | *B | for AWD |
| *1 | AIR CLEANER ASSEMBLY LH | *2 | AIR CLEANER ASSEMBLY RH |
| *3 | LOWER RADIATOR AIR DEFLECTOR | *4 | RADIATOR COVER PLATE |
| *5 | RADIATOR SUPPORT TO CROSSMEMBER BRACE SUB-ASSEMBLY LH | *6 | RADIATOR SUPPORT TO CROSSMEMBER BRACE SUB-ASSEMBLY RH |
| *7 | UPPER RADIATOR SUPPORT SEAL | *8 | V-BANK COVER SUB-ASSEMBLY |
| N.m (kgf/cm, ft.lbf): Specified torque | - | - |
| *1 | NO. 1 AIR TUBE ASSEMBLY | *2 | NO. 2 AIR TUBE ASSEMBLY |
| *3 | THROTTLE BODY WITH MOTOR ASSEMBLY (for Bank 1) | *4 | THROTTLE BODY WITH MOTOR ASSEMBLY (for Bank 2) |
| *5 | NO. 3 WATER BY-PASS HOSE | *6 | NO. 4 WATER BY-PASS HOSE |
| *7 | NO. 5 WATER BY-PASS HOSE | *8 | NO. 6 WATER BY-PASS HOSE |
| *9 | WIRE HARNESS | *10 | GASKET |
| N.m (kgf/cm, ft.lbf): Specified torque | • | Non-reusable part |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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