When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected:

    System See Procedure
    Stop and Start System (for 2AR-FE)

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    Stop and Start System (for 2GR-FKS)
    Panoramic View Monitor System
    Power Door Lock Control System
    Air Conditioning System
    Power Slide Door System
    Power Back Door System


    • If the Continuously Variable Transaxle (CVT) assembly or ECM is replaced, make sure to perform Reset Memory.

    • Performing Reset Memory will clear the learned values of the yaw rate and acceleration sensor (Deceleration Sensor Zero Point Calibration) and the CVT oil pressure (CVT Oil Pressure Calibration). Make sure to perform Reset Memory, Deceleration Sensor Zero Point Calibration, and CVT Oil Pressure Calibration if any of the parts in the following table have been replaced.

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      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Oil pressure sensor

      • Airbag ECU assembly (Yaw rate and acceleration sensor)

    • If either of the following conditions is met, perform ATF Thermal Degradation Estimate Reset.

      • The CVT fluid has been replaced.

        Tech Tips

        If 50000 or more is displayed for the Data List item "ATF Thermal Degradation Estimate", thermal degradation of the CVT fluid is suspected. Perform ATF Thermal Degradation Estimate Reset after replacing the CVT fluid.

      • Approximately 50% or more of the CVT fluid has been replaced during a repair of the transaxle or a similar operation.



    When using compressed air, always aim away from yourself to prevent CVT fluid from spraying on your face.


    • Before removing components from the transaxle, clean off any sand, dirt or other foreign matter present on the exterior of the transaxle. Make sure that foreign matter does not contaminate the inside of the transaxle when parts are removed or installed, or during disassembly and reassembly of the transaxle.

    • When disassembling light alloy parts such as the transaxle case, do not pry them with a screwdriver or similar tool. Instead, tap the parts with a plastic hammer to separate them.

    • Do not wear cloth gloves or use cloth to handle parts during removal, disassembly, or installation of the transaxle. Instead, wear synthetic gloves to prevent cloth fiber from entering the transaxle.

    • Removed parts should be arranged in order and care should be taken to prevent dust contamination.

    • Apply Toyota Genuine CVT Fluid FE to all sliding surfaces and rotating parts.

    • Before installing O-rings and oil seal rings, coat them with Toyota Genuine CVT Fluid FE and be sure not to damage them.

    • Be careful not to damage the sealing surfaces of components, because damage to these surfaces can cause oil leaks.

    • Before applying seal packing, remove all of the old seal packing and thoroughly clean the surfaces with a non-residue solvent.

    • Use of Toyota Genuine CVT Fluid FE is recommended.

    • Do not subject parts such as sensors to any impacts. Replace parts with new ones if they are dropped or subjected to a severe impact.