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, AWDFACTORY OEM SERVICE PROCEDURE
Components [12/2017 - ]
| *A | for 2WD | *B | for AWD |
| *1 | LOWER RADIATOR AIR DEFLECTOR | *2 | RADIATOR COVER PLATE |
| *3 | UPPER RADIATOR SUPPORT SEAL | *4 | V-BANK COVER SUB-ASSEMBLY |
| *1 | AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1) | *2 | AIR FUEL RATIO SENSOR (for Bank 2 Sensor 1) |
| N.m (kgf/cm, ft.lbf): Specified torque | * | For use with SST |
| *A | for 2WD | - | - |
| *1 | AIR FUEL RATIO SENSOR (for Bank 1 Sensor 2) | *2 | AIR FUEL RATIO SENSOR (for Bank 2 Sensor 2) |
| *3 | NO. 2 ENGINE UNDER COVER ASSEMBLY | *4 | TRANSMISSION UNDER COVER |
| N.m (kgf/cm, ft.lbf): Specified torque | * | For use with SST | |
| • | Non-reusable part | * | Precoated part |
| *A | for AWD | - | - |
| *1 | AIR FUEL RATIO SENSOR (for Bank 1 Sensor 2) | *2 | AIR FUEL RATIO SENSOR (for Bank 2 Sensor 2) |
| *3 | NO. 2 ENGINE UNDER COVER ASSEMBLY | - | - |
| N.m (kgf/cm, ft.lbf): Specified torque | * | For use with SST |
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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