Toyota Avalon Service & Repair Manual: Operation Check



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

(b) Check that the rear window defogger wire becomes warm by operating the rear window defogger switch of the radio and display receiver assembly.

(c) When the vehicle is stopped, confirm that the window defogger system operation stops after approximately 15 minutes.


If the auxiliary battery voltage becomes low, auxiliary battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the window defogger system may not operate.


The window defogger system is linked with the mirror heater function.

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    Toyota Avalon Service & Repair Manual > Automatic Transaxle System: Dtc Check / Clear
    DTC CHECK / CLEAR NOTICE: When the diagnosis system is changed from normal mode to check mode or vice versa, all DTCs and freeze frame data recorded in normal mode are cleared. Before changing modes, always check and make a note of DTCs and freeze frame data. HINT: DTCs which are stored in the ECM c ...

    Toyota Avalon Owners Manual

    Toyota Avalon Service & Repair Manual

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