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.
2008 Lexus RX 400h AWDFACTORY OEM SERVICE PROCEDURE
Typical Enabling Conditions
TYPICAL ENABLING CONDITIONS
| Battery voltage | 8 V or more |
| Time after engine start | 3 seconds or more |
| Starter | OFF |
| ECT at engine start | -10°C (14°F) or more |
| ECT | -10 to 50°C (14 to 122°F) |
| Engine idling time | 0 second or more |
| Fuel-cut | OFF |
| Vehicle speed | 37 mph (60 km/h) |
| Time after shift position changed (A/T) | 1 second or more |
| Atmospheric pressure | 76 kPa (570 mmHg) or more |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.