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 RX 450hLFACTORY OEM SERVICE PROCEDURE
External Pages
These are pages that do not belong to the exact selected vehicle (2021 Lexus RX 450hL), but are still accessible from a link in your vehicle's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle.
- Different car
- Section 1 (Lane Keep Assist / Lane Departure Assist System (Diagnostics - Introduction))
- Section 2 (Intuitive Parking Assist System (Diagnostics - Introduction))
- Section 3 (Power Back Door System (W/O Outside Door Control Switch) (Diagnostics - Introduction))
- Section 4 (Adaptive Front Lighting System (Diagnostics - Introduction))
- Section 5 (Vehicle Proximity Notification System (Diagnostics - Introduction))
- Section 6 (Cruise Control System (Diagnostics - Introduction))
- Section 7 (Cruise Control System (Diagnostic Codes & Circuit Tests))
- Section 8 (Forward Recognition Camera System (Diagnostics - Introduction))
- Section 9 (Automatic High Beam System (Diagnostics - Introduction))
- Section 10 (Forward Recognition Camera System (Diagnostic Codes & Circuit Tests))
- Section 11 (Lane Keep Assist / Lane Departure Assist System (Diagnostic Codes & Circuit Tests))
- Section 12 (Rear Seat Entertainment System (Diagnostics - Introduction))
- Section 13 (Rear Seat Entertainment System (Diagnostic Codes & Symptom Tests))
- Section 14 (Back Door Closer System (Diagnostics - Introduction))
- Section 15 (Intuitive Parking Assist System (Diagnostic Codes & Circuit Tests))
- Section 16 (Vehicle Proximity Notification System (Service Information))
- Section 17 (Power Back Door System (W/O Outside Door Control Switch) (Diagnostic Codes & Symptom Tests))
- Section 18 (Back Door Closer System (Diagnostic Codes & Symptom Tests))
- Section 19 (Automatic Headlight Beam Level Control System (Diagnostics - Introduction))
- Section 20 (Automatic Headlight Beam Level Control System (Diagnostic Codes & Circuit Tests))
- Section 21 (Automatic High Beam System (Diagnostic Codes & Circuit Tests))
- Section 22 (Adaptive Front Lighting System (Diagnostic Codes))
- Section 23 (Vehicle Proximity Notification System (Diagnostic Codes & Symptom Tests))
Factory Service Tools
Use the Manual With the Right Hardware
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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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