Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

NOTICE:

Make sure to check the following before proceeding with troubleshooting.

• Do not perform "Smart Code Reset" (all key ID erasure) until the malfunctions and symptoms have been confirmed and resolved. If all key ID erasure is performed without confirming or resolving malfunctions, key registration will be unable to be performed, resulting in unnecessary part replacement.
• Make sure that the smart key system has not been disabled by a customize setting.

HINT:

• Replace parts related to the wireless door lock control system and smart key system according to the inspection procedure.
• If the wireless door lock control system and smart key system do not operate, check the customize setting and make sure that the wireless door lock control system and smart key system are not disabled.
• The wireless door lock control system and smart key system primarily use the following systems.
  • Power door lock control system
  • Wireless door lock control system
  • Smart key system (for Entry Function)
  • Smart key system (for Start Function)
    • Steering lock function
    • Immobiliser function
• If 2 or more electrical key transmitter sub-assemblies are registered to the system, make sure to perform troubleshooting with all of them.

PROCEDURE

(a) Confirm how the vehicle was brought to the workshop.

• Vehicle was driven.
• Vehicle was towed.

HINT:

The cause of the malfunction may be narrowed down by confirming whether the vehicle was driven or towed.

NEXT

GO TO SMART KEY SYSTEM (for Start Function)