Toyota Avalon Service & Repair Manual: Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

  • After the engine switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) battery terminal.
  • When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the terminal is reconnected.

    System Name

    See Procedure

    Lane Departure Alert System (w/ Steering Control)

    Intelligent Clearance Sonar System

    Parking Assist Monitor System

    Panoramic View Monitor System

    Pre-collision System

    Lighting System (for Gasoline Model with Cornering Light)

PRECAUTION FOR NAVIGATION SYSTEM

NOTICE:

  • When replacing the radio and display receiver assembly or navigation ECU, always replace it with a new one. If a radio and display receiver assembly or navigation ECU which was installed to another vehicle is used, the following may occur:
    • A communication malfunction DTC may be stored.
    • The radio and display receiver assembly or navigation ECU may not operate normally.
  • When performing the following work, the navigation system may restart when turning the engine switch on (ACC) (due to radio and display receiver assembly and navigation ECU certification).
    • Repair or replace the negative (-) battery terminal due to it being disconnected or depleted.
    • The radio and display receiver assembly or navigation ECU replacement or removal and installation.
  • When replacing the DCM (telematics transceiver), make sure to replace it with a new one (w/ Manual (SOS) Switch).
  • After replacing the radio and display receiver assembly, if "New software is not compatible with the system. Contact your dealer." is displayed on the multi-display, update the software of the navigation ECU.
  • After replacing the navigation ECU, if "New software is not compatible with the system. Contact your dealer." is displayed on the multi-display, update the software of the radio and display receiver assembly.

(a) If any of the following parts are replaced, refer to Initialization in Repair Instruction.

Click here

  • Radio and display receiver assembly*1
  • DCM (telematics transceiver)*2
  • *1: After replacing the radio and display receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, SiriusXM radio ID registration is necessary (w/ SXM Function).

    *2: w/ Manual (SOS) Switch

    Portable Player cannot be Registered

    Problem Symptoms Table

    See More:

    Toyota Avalon Service & Repair Manual > Seat Heater System(for Gasoline Model): Terminals Of Ecu
    TERMINALS OF ECU CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (a) Disconnect the G35 air conditioning amplifier assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Ter ...

    Toyota Avalon Owners Manual

    Toyota Avalon Service & Repair Manual

    © 2021 Copyright www.tavalon.net
    0.0321