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.
2012 Toyota Prius VFACTORY OEM SERVICE PROCEDURE
Pre-Collision System: Precaution: Precaution
- NOTICE FOR INITIALIZATION NOTE:
When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected.
System Name See Procedure Advanced Parking Guidance System Refer to INITIALIZATION Power Door Lock Control System - TROUBLESHOOTING PRECAUTIONS
- If a terminal contact point malfunction or part installation problem occurs, removal and reinstallation of the suspected part may return the system to normal. However, be aware that the normal condition may only be temporary.
- Before disconnecting connectors or removing/installing parts, determine the malfunctioning area by checking and writing down the vehicle condition at the time the malfunction occurred (DTC outputs etc.).
- Be sure to check for DTCs related to other systems. The pre-collision system may be influenced by malfunctions in other systems.
- HANDLING PRECAUTIONS
- When removing and installing the ECU, sensor, switch or other pre-collision system related parts, perform the following:
- Make sure that the power switch is off unless otherwise specified in the inspection procedure.
- After the removal/installation, check for DTCs and confirm that a normal system code is output.
- When removing and installing the ECU, sensor, switch or other pre-collision system related parts, perform the following:
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.