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.
2013 Toyota Sienna LFACTORY OEM SERVICE PROCEDURE
SFI System: Precaution: Precaution
- IGNITION SWITCH EXPRESSIONS
- The type of ignition switch used on this model differs according to the specifications of the vehicles. The expressions listed in the table below are used in this information.
Expression Ignition Switch (Position) Engine Switch (Condition) Ignition Switch off LOCK Off Ignition Switch ACC ACC On (ACC) Ignition Switch ON ON On (IG) Engine Start START Start
- The type of ignition switch used on this model differs according to the specifications of the vehicles. The expressions listed in the table below are used in this information.
- INITIALIZATION NOTE:
- If the ECM is replaced, register the ECU communication ID for Engine Immobilizer System. Refer to REGISTRATION .
- Perform the Registration (VIN registration) when replacing the ECM. Refer to REGISTRATION .
- Perform initialization (throttle position) after replacing the throttle with motor body assembly or cleaning any throttle body components. Refer to INSTALLATION - Step 12 .
- Perform initialization (throttle position) after reconnecting the battery cable or replacing the ECM. Refer to INSTALLATION - Step 12 .
HINT:
Reset memory or initialization cannot be completed by only disconnecting and reconnecting the cable of the negative (-) battery terminal.
- FOR USING TECHSTREAM WARNING:
Observe the following items for safety reasons:
- Before using the Techstream, read the instruction manual.
- Prevent the Techstream cable from being caught on the pedals, shift lever or steering wheel when driving with the Techstream connected to the vehicle.
- When driving the vehicle for testing purposes using the Techstream, 2 persons are required. One is for driving the vehicle, and the other operates the Techstream.
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.