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.
SFI System: Precaution: Precaution
- INITIALIZATION NOTE:
- Perform initialization (throttle position) after replacing the throttle body assembly or cleaning any throttle body components.Refer to INSTALLATION - Step 1 .
- Perform initialization (throttle position) after reconnecting the battery cable or replacing the ECM. Refer to INSTALLATION - Step 1 .
- Perform the RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM. Refer to INITIALIZATION .
- Perform the REGISTRATION (VIN registration) when replacing the ECM. Refer to REGISTRATION .
HINT:
Initialization cannot be completed by only removing the battery.
- FOR USING TECHSTREAM WARNING:
Observe the following items for safety reasons:
- Read its instruction books before using the Techstream.
- Prevent the Techstream cable from being caught on the pedals, shift lever and steering wheel when driving with the Techstream connected to the vehicle.
- When driving the vehicle for testing purposes using the Techstream, two persons are required. One person drives the vehicle, and the other operates the Techstream.
- DISCONNECT AND RECONNECT CABLE OF NEGATIVE BATTERY TERMINAL
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Before performing electronic work, disconnect the cable from the negative (-) battery terminal in order to prevent it from shorting and burning out.
- Before disconnecting and reconnecting the battery cable, turn the ignition switch to off and the headlight dimmer switch OFF. Then loosen the terminal nut completely. Do not damage the cable or terminal.
- When the battery cable is disconnected, the clock and radio settings and stored DTCs are erased. Therefore, before disconnecting the battery cable, make a note of the settings.
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.
No obligation. See pricing before you book.