Toyota Avalon Service & Repair Manual: Check For Intermittent Problems



  • If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
  • The operation history function uses the current system time of the Techstream and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading the operation history, first make sure that the Techstream system clock is accurately set to the current time.
  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

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  • Make sure the power switch is off, all the doors and the hood are closed and all the doors have been locked by wireless operation or entry operation.

Operation History


The main body ECU (multiplex network body ECU) stores Operation History, which can be read using the Techstream, when a malfunction of the theft deterrent system occurs.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Utility / Operation History.

Body Electrical > Main Body > Utility

Tester Display

Operation History

(e) According to the display on the Techstream, read and save the operation history.

Operation History List

Battery Desorption

Hood Open

Luggage Open

Door Open

Door Unlock


Intrusion Sensor Detect

Glass Sensor

Tilt Sensor

Intrusion Sensor Sound Detect

Intrusion Sensor Detect at Window Open

Panic Alarm


Depending on the specifications of the vehicle some items may not be displayed.

Symptom Simulation

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    Theft Deterrent System(for Hv Model)

    Customize Parameters

    See More:

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    Toyota Avalon Owners Manual

    Toyota Avalon Service & Repair Manual

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