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Home >> Lexus >> 2014 >> IS 350 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Access System (For Start) - Diagnostics - Introduction >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) >> Precaution [10/2016 - 09/2020] >> Precaution [10/2016 - 09/2020]
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Precaution [10/2016 - 09/2020]

  1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE:

    When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected.

    System Name See Procedure
    Lane Departure Alert System (w/ Steering Control) Refer to INITIALIZATION [10/2016 - 10/2017] , or refer to INITIALIZATION [10/2017 - 09/2020]
    Parking Assist Monitor System
    Pre-collision System
    Air Conditioning System
    AFS (Adaptive Front-lighting System)
  2. PRECAUTION WHEN USING TECHSTREAM 
    1. When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
  3. PRECAUTION FOR REGISTRATION 
    1. If replacing any of the following parts, refer to the registration procedures.

      Refer to REGISTRATION [08/2015 - 10/2017] , or refer to REGISTRATION [10/2017 - 09/2020]

      1. Certification ECU (smart key ECU assembly)
      2. Steering lock ECU (steering lock actuator assembly)
      3. ECM
      4. Electrical key transmitter sub-assembly
      5. ID code box (immobiliser code ECU)
      6. Main body ECU (multiplex network body ECU)
      7. DCM (telematics transceiver)*
        1. *: for Lexus EnformRemote Compatible Type
    2. When the certification ECU (smart key ECU assembly) is replaced, the stored steering lock position will no longer match that of the steering lock ECU (steering lock actuator assembly) and it may not be possible to start the engine. Therefore, after replacement, perform the following procedure.
      1. Move the shift lever to P.
      2. With the engine switch off, open and close a door, and then start the engine.
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