2013 Toyota Prius ThreeFACTORY OEM SERVICE PROCEDURE

Repair Instruction: Initialization: Initialization

  1. PROCEDURES NECESSARY WHEN BATTERY TERMINAL IS DISCONNECTED/RECONNECTED 
    NOTE:
    • After the power switch is turned off, the navigation receiver assembly (for Navigation Receiver Type) or radio and display receiver assembly (w/o Daytime Running Light) records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 60 seconds before disconnecting the cable from the negative (-) battery terminal.
    • When the auxiliary battery is replaced or the cable is disconnected from its negative (-) battery terminal, the ISC learning value will be initialized and symptoms as a loud rattle from the hybrid vehicle transaxle assembly may occur until ISC learning is performed. Therefore, perform ISC learning when the auxiliary battery is replaced or the cable is disconnected from the negative (-) terminal of the auxiliary battery. Refer to Loud Rattle from Hybrid Vehicle Transmission .
  2. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED 
    Replacement Part Necessary Procedure Effect / Inoperative Function when Necessary Procedures are not Performed See
    ECM Vehicle Identification Number (VIN) registration MIL comes on Refer to REGISTRATION
    Millimeter wave radar sensor assembly Adjust millimeter wave radar sensor assembly (Dynamic radar cruise control system)
    • Dynamic radar cruise control system
    • Pre-collision system
    		 Refer to ADJUSTMENT
    Lane recognition camera sensor assembly Adjust lane recognition camera sensor assembly (Lane keeping assist system)
    • Lane keeping assist system
    • Pre-collision system
    		 Refer to ADJUSTMENT
    • Tire pressure warning ECU
    • Tire pressure warning valve and transmitter
    • Code registration (Tire pressure warning system)
    • Initialization
    • When DTC detection conditions of "transmitter ID not received" DTC are met, TPWS indicator blinks for 1 minute, and then illuminates.
    • Tire pressure warning function
    		 Refer to INITIALIZATION for initialization
    Refer to REGISTRATION for registration
    Brake booster with master cylinder (Skid control ECU, brake actuator or pressure sensor)
    1. Initialization and calibration of the linear solenoid valve
    2. Yaw rate and acceleration sensor zero point calibration
    • ABS warning light illumination
    • Slip indicator light illumination
    • Brake warning light / yellow (minor malfunction) illumination
    • VSC disabled or malfunctioning
    		 Refer to INITIALIZATION for initialization
    Refer to CALIBRATION for calibration
    • Brake pedal stroke sensor
    • Brake pedal
    1. Clearing stored linear solenoid valve calibration data
    2. Initialization and calibration of the linear solenoid valve
    • ABS warning light illumination
    • Slip indicator light illumination
    • Brake warning light / yellow (minor malfunction) illumination
    • VSC disabled or malfunctioning
    Yaw rate and acceleration sensor
    1. Clearing zero point calibration data
    2. Yaw rate and acceleration sensor zero point calibration
    • ABS warning light illumination
    • Slip indicator light illumination
    • Brake warning light / yellow (minor malfunction) illumination
    • VSC disabled or malfunctioning
    Power steering ECU assembly*1
    1. Torque sensor zero point calibration
    2. Assist map writing
    • P/S warning light comes on
    • EPS control
    		 Refer to CALIBRATION
    Electric power steering column sub-assembly (containing the torque sensor)*1 Torque sensor zero point calibration Steering effort is different between turning steering wheel to left and right
    Power steering ECU assembly*2 Rotation angle sensor initialization and torque sensor zero point calibration
    • P/S warning light comes on
    • EPS control
    		 Refer to CALIBRATION
    • Electric power steering column sub-assembly (containing the torque sensor)*2
    • Power steering motor assembly*2
    		 Rotation angle sensor initialization and torque sensor zero point calibration Steering effort is different between turning steering wheel to left and right
    Rear height control sensor sub-assembly RH Perform headlight leveling ECU initialization Automatic leveling function Refer to INITIALIZATION
    Inner rear view mirror assembly*3 Re-registration of codes in the garage door opener system
    • Register transmitter code
    • Rolling code systems
    		 Garage door opener system Refer to REGISTRATION
    DCM (Telematics Transceiver) DCM activation Safety connect system Refer to PRECAUTION
    • Certification ECU (smart key ECU assembly)
    • ID code box (immobiliser code ECU)*4
    • Transmission control ECU assembly
    • Key
    		 Code registration (Engine immobiliser system)
    • Wireless door lock control system
    • Smart key system
    • Hybrid start
    		 Refer to REGISTRATION
    • Occupant classification ECU
    • Front passenger seat
    1. Zero point calibration (Occupant classification system)
    2. Sensitivity check (Occupant classification system)
    • Occupant classification system
    • Passenger airbag ON/OFF indicator
    • Airbag system (Front passenger side)
    • Seat belt warning system (Front passenger side)
    		 Refer to INITIALIZATION
    • Power window regulator motor
    • Door window regulator
    		 Initialize power window control system
    • Automatic door glass open/ close function
    • Jam protection function
    • Operation function after power switch is turned off
    		 Refer to INITIALIZATION
    • Sliding roof ECU (sliding roof drive gear sub-assembly)
    • Sliding roof glass
    • Sliding roof housing
    		 Initialize sliding roof ECU (pulse sensor initial position setting)
    • Automatic open function of sliding roof
    • Jam protection function
    • Operation function after power switch is turned off
    		 Refer to INITIALIZATION
    • Headlight leveling ECU
    • Suspension, tires, etc.
    		 Perform headlight leveling ECU initialization Automatic leveling function Refer to INITIALIZATION
    • *1: for Brush Type Motor
    • *2: for Brushless Type Motor
    • *3: w/ Garage Door Opener System
    • *4: for Canada
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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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