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
- PRECAUTIONS FOR INSPECTING HYBRID CONTROL SYSTEM
- Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from reconnecting it while you are working on the high-voltage system.NOTE: Do not put the vehicle into the power switch ON (READY) state with the service plug grip removed as this may cause a malfunction.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
HINT:
At least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
- Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from reconnecting it while you are working on the high-voltage system.
- PRECAUTIONS FOR HYBRID CONTROL SYSTEM ACTIVATION
- When the warning light is illuminated or the auxiliary battery has been disconnected and reconnected, attempting to put the vehicle into the power switch ON (READY) state the first time may not start the system. If so, turn the power switch OFF and reattempt to put the vehicle into the power switch ON (READY) state.
- FOR USING INTELLIGENT TESTER OR TECHSTREAM CAUTION: Observe the following items for safety reasons:
- Read its instruction books before using the tester.
- Prevent the tester cable from being caught on the pedals, shift lever and steering wheel when driving with the tester connected to the vehicle.
- When driving the vehicle for testing purposes using the tester, 2 persons are required. One is for driving the vehicle, and the other operates the tester.
- DISCONNECT AND RECONNECT CABLE OF NEGATIVE BATTERY TERMINAL
- Before performing electronic work, disconnect the cable from the negative (-) battery terminal in order to prevent it from shorting and burning out.NOTE: After the power switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the power switch off, wait 6 minutes or more disconnecting the cable from the negative (-) battery terminal.
- Before performing electronic work, disconnect the cable from the negative (-) battery terminal in order to prevent it from shorting and burning out.
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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.
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