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2021-2022 Toyota Communication System Fault TSB

Toyota has identified communication system issues in certain 2021-2022 Camry, RAV4, Corolla, Avalon, and Venza vehicles. Symptoms include DTC B15A804, a persistent SOS LED, inoperative Toyota App functions, and remote start failures. This TSB provides guidance for diagnosis and repair.

Byeditor sarah mitchell2021 Toyota Camry
2021 TOYOTA Camry — Toyota Camry communication fault
Editorial illustration generated for this article.
B15A80410220179Red SOS LED stays on after bulb checkToyota App does not accept the activation codeToyota App is inoperativeSOS call center does not receive the vehicle’s location in a timely mannerToyota App shows an error 42 when trying to execute a commandUnable to remote start the vehicle with the key fob (if equipped)Unable to subscribe to remote servicesUnable to activate Wi-Fi

Também se aplica a

Toyota Avalon
2021–2022
Toyota Camry
2022
Toyota Corolla
2021–2022
Toyota RAV4
2021–2022
Toyota Venza
2021–2022

Toyota has released Technical Service Bulletin (TSB) 10220179 to address various communication system issues that may affect certain 2021-2022 Toyota models. This bulletin provides guidance for diagnosing and resolving conditions related to the vehicle's communication systems, including the Toyota Camry communication fault, which can impact connectivity and app functionality.

Symptoms

Owners experiencing a Toyota Camry communication fault may observe one or more of the following conditions:

  • The red SOS LED remains illuminated after the bulb check.
  • The Toyota App does not accept the activation code.
  • The Toyota App is inoperative or unresponsive.
  • The SOS call center does not receive the vehicle's location in a timely manner.
  • The Toyota App displays "error 42" when attempting to execute a command.
  • Remote starting the vehicle with the key fob is not possible (if equipped).
  • Unable to subscribe to remote services.
  • Unable to activate Wi-Fi services.
  • Destination Assist features are inoperative.

Fault Codes / DTCs

A primary indicator of this communication system issue is the presence of a specific Diagnostic Trouble Code (DTC).

Code Description
B15A804 Communication System Malfunction / Error

Diagnosis

This TSB outlines the diagnostic steps for technicians to identify the root cause of these communication system problems. The presence of DTC B15A804 is a key indicator of a potential Toyota Camry communication fault. Technicians will use the bulletin to accurately diagnose the conditions and determine the appropriate repair.

Owner Action

If you own a 2021-2022 Toyota Camry, RAV4, Corolla, Avalon, or Venza and are experiencing any of the described communication system issues, including an inoperative Toyota App or a persistent SOS LED, it is recommended to contact your authorized Toyota dealership. They can diagnose the issue using TSB 10220179 and perform any necessary repairs.

NHTSA ID: 10220179

Frequently Asked Questions

What is DTC B15A804 in my Toyota?
DTC B15A804 indicates a communication system malfunction or error in your 2021-2022 Toyota vehicle. This code is often associated with issues affecting the Toyota App, SOS functions, and other connected services.
Why is my Toyota App showing 'error 42' or not working?
If your Toyota App shows 'error 42' or is inoperative, it could be due to a communication system fault addressed by Toyota TSB 10220179. This issue can prevent the app from accepting activation codes, executing commands, or providing services like remote start.
What should I do if my Toyota's SOS LED stays on?
A red SOS LED that remains illuminated after the bulb check is a symptom of a communication system issue in certain 2021-2022 Toyota models. You should contact your Toyota dealership to have the vehicle diagnosed, as this is covered by TSB 10220179.
Does this TSB affect remote start functionality?
Yes, one of the symptoms covered by TSB 10220179 is being 'Unable to remote start the vehicle with the key fob (if equipped)'. If you are experiencing this, along with other communication issues, your dealership can help.

Outras revisões deste TSB

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