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 FFACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Switches
SWITCHES LOCATION
| Component | Location |
|---|---|
| Brake Fluid Level Warning Switch (A16) | Brake fluid reservoir. See Figure. |
| Brake Pedal Load Sensing Switch (A23) | Top of brake pedal assembly. See Figure. |
| Door Courtesy SW (Left Front) (Q11) | Left "B" pillar. See Figure. |
| Door Courtesy SW (Left Rear) (Q17) | Left "C" pillar. See Figure. |
| Door Courtesy SW (Right Front) (P9) | Right "B" pillar. See Figure. |
| Door Courtesy SW (Right Rear) (P16) | Right "C" pillar. See Figure. |
| Engine Hood Courtesy Switch (B8) | Center front of engine compartment. See Figure. |
| Engine Oil Pressure Switch (E28) | Lower front of engine. See Figure. |
| Kick Down Switch (A61) | Under left side of dash. See Figure. |
| Level Warning Switch (A1) | Washer reservoir. See Figure. |
| Luggage Electrical Key Switch (Q45) | Center rear of luggage compartment lid. See Figure. |
| Parking Brake Switch (A25) | Top of parking brake lever. See Figure. |
| Park/Neutral Position Switch Assembly (E45) | Transmission assembly. See Figure. |
| Stop Light Switch (A22) | Top of brake pedal assembly. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.