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 IS 350FACTORY OEM SERVICE PROCEDURE
Shift Paddle Switch: Inspection
- INSPECT SHIFT PADDLE SWITCH
- Measure the resistance between each terminal when the paddle shift is moved to each position.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTPaddle Shift Position Tester Connection Specified Condition Pull continuously "+" (Up shift) SFTU - ECC Below 1 Ω Release "+" (Up shift) SFTU - ECC 10 kΩ or higher Pull continuously "-" (Down shift) SFTD - ECC Below 1 Ω Release "-" (Down shift) SFTD - ECC 10 kΩ or higher If the resistance value is not as specified, replace the shift paddle switch.
- Measure the resistance between each terminal when the paddle shift is moved to each position.
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.