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.
2009 Lexus IS 350FACTORY OEM SERVICE PROCEDURE
Intake System: Precaution: Precaution
WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- EXPRESSIONS OF IGNITION SWITCH
The type of ignition switch used on this model differs according to the specifications of the vehicle.
The expressions listed in the table below are used in this section.
Switch Type Ignition Switch (position) Engine Switch (condition) Expression Ignition Switch off LOCK Off Ignition Switch on (IG) ON On (IG) Ignition Switch on (ACC) ACC On (ACC) Engine Start START Start
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.