Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Precaution



While the auxiliary battery is connected, even if the power switch is off, the brake control system activates when the brake pedal is depressed or the door courtesy switch is turned on. Therefore during servicing of the brake system components, do not depress the brake pedal or open/close the doors while the auxiliary battery is connected.


  • This vehicle is equipped with an SRS (Supplemental Restraint System). Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing. This may cause a serious accident. Before servicing (including inspection, replacement, removal, and installation of parts), be sure to read the precautionary notices for the Supplemental Restraint System.

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  • Care must be taken to replace each part properly as it could affect the performance of the brake system and result in a driving hazard. Replace the parts with those having the same part number or equivalent.
  • It is very important to keep parts and the area clean when repairing the brake system.
  • If the vehicle is equipped with a mobile communication system, refer to Precaution in the Introduction section.

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  • Care must be taken when using magnets as they could affect the performance of the speed sensors.
  • Make sure to disable brake control before disconnecting the brake lines.
    On-vehicle Inspection

    Problem Symptoms Table

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    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Panoramic View Monitor System(for Gasoline Model): CAN Communication Failure (Message Registry) (U1000)
    DESCRIPTION If DTC U1000 is stored frequently, duplicate the problem symptoms and perform troubleshooting again even if the DTC is not output when rechecking for DTCs. Parking Assist ECU DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from U1000 CAN Communication Failure (Mess ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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