2021 Toyota Infotainment System Software Update TSB

Owners of certain 2021 Toyota models may experience a variety of Toyota infotainment issues related to their Audio Plus or Premium Audio systems. These problems can affect functionality with Apple CarPlay®, Android Auto®, Bluetooth, navigation, and general system stability. Toyota has released a Technical Service Bulletin (TSB) outlining a software update to resolve these conditions.

Symptoms

Owners might notice several symptoms indicating Toyota infotainment issues. These can include visual and audio disturbances, as well as functional problems with integrated features:

• Apple CarPlay® and Bluetooth Issues:
  • "Distorted screen when using Apple CarPlay® while making a hands-free phone call."
  • "Abnormal screen play while using Apple CarPlay® (primarily during phone calls)."
  • "Poor sound quality during phone calls while using Apple CarPlay®."
  • "Bluetooth disconnecting during a phone call when using Apple CarPlay®."
  • "Apple CarPlay® intermittently inoperative."
• System Stability and Functionality:
  • "Intermittent rebooting."
  • "Intermittent screen freezing."
  • "Radio takes a long time to boot up."
  • "System inoperative after using the return button when using voice recognition."
• Audio and Navigation Problems:
  • "USB audio does not resume after ignition cycle."
  • "Music does not automatically resume when using Android Auto®."
  • "Cover art is not displayed."
  • "Song, artist, or album data missing."
  • "Navigation intermittently will not boot up."
  • "Home Screen Audio widget is blank after a Destination Assist call."
  • "Vehicle position is not sent to Destination Assist server."
• Other Issues:
  • "Barge in function defaulted to OFF."
  • "Limited phone book grammar."
  • "Difficult Hand Free operation."
  • "Abnormal Electronic Owner’s Manual operation."
  • "Abnormal clock operation."

Diagnosis / Trigger Conditions

These Toyota infotainment issues are primarily linked to specific software versions of the Audio Plus and Premium Audio systems. Vehicles equipped with Audio Plus (version 1060) or Premium Audio (version 1060) or earlier may experience distorted screens with Apple CarPlay. Other issues are associated with earlier software versions such as 1021, 1035, and 1047.

If your 2021 Toyota vehicle exhibits any of the described symptoms and has one of these earlier software versions, a software update is likely needed to correct the problem.

Repair Procedure Summary

To resolve these Toyota infotainment issues, a software update is available. The repair involves updating the vehicle's Audio Plus or Premium Audio system software to the latest version. This procedure is performed by a qualified technician at a Toyota dealership following the specific steps outlined in the Technical Service Bulletin.

Owner Action

If you own a 2021 Toyota Camry, Tundra, Sequoia, 4Runner, or Highlander and are experiencing any of the infotainment system symptoms described, you should contact your authorized Toyota dealership. Explain the issues you are encountering and mention Technical Service Bulletin (TSB) 10185760. The dealership will be able to diagnose your system's software version and perform the necessary update.

Source: NHTSA ID: 10185760