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 500h RWDFACTORY OEM SERVICE PROCEDURE
Components [10/2017 - 10/2020]
Fig 1: Ignition Coil And Spark Plug Replacement Components With Torque Specifications [10/2017 - 10/2020]
| Callout | Description | Callout | Description |
|---|---|---|---|
| *1 | AIR CLEANER WITH AIR CLEANER HOSE | *2 | IGNITION COIL ASSEMBLY |
| *3 | LOWER RADIATOR AIR DEFLECTOR | *4 | NO. 2 PCV HOSE |
| *5 | RADIATOR COVER PLATE | *6 | RADIATOR SUPPORT TO CROSS MEMBER BRACE SUB-ASSEMBLY RH |
| *7 | SPARK PLUG | *8 | UPPER RADIATOR SUPPORT SEAL |
| *9 | V-BANK COVER SUB-ASSEMBLY | *10 | WIRE HARNESS |
| *11 | NO. 1 ENGINE COVER SUB-ASSEMBLY | - | - |
| N.m (kgf/cm, ft.lbf): Specified torque | - | - |
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.