2021-2022 Toyota Camry, RAV4, Corolla SOS System TSB

Toyota has released a Technical Service Bulletin (TSB 10214351) to address multiple issues related to the telematics and SOS communication systems in certain 2021-2022 Toyota Camry, RAV4, Corolla, Avalon, and Venza vehicles. This TSB helps technicians diagnose and resolve problems that can affect vehicle connectivity and emergency services.

Symptoms

Owners of affected 2021-2022 Toyota vehicles may experience one or more of the following conditions related to the telematics system:

• A Diagnostic Trouble Code (DTC) B15A804 may be present in current or history.
• The "red SOS LED stays on after bulb check."
• The "Toyota App does not accept the activation code."
• The "Toyota App is inoperative."
• The "SOS call center does not receive the vehicle’s location in a timely manner."
• The "Toyota App shows an error 42 when trying to execute a command."
• The vehicle is "Unable to remote start the vehicle with the key fob" (if equipped).
• The vehicle is "Unable to subscribe to remote services."
• The vehicle is "Unable to activate Wi-Fi."
• "Destination Assist is inoperative."

These symptoms indicate a potential malfunction within the vehicle's communication and telematics system, impacting features like emergency assistance and remote vehicle control.

Fault Codes / DTCs

The primary diagnostic trouble code associated with these telematics system issues is:

This DTC, along with the described symptoms, points to a problem that the TSB aims to resolve.

Diagnosis

Technicians will typically confirm the presence of these issues by checking for the "Toyota Camry DTC B15A804" in the vehicle's diagnostic history or as a current fault. They will also verify the reported symptoms, such as the persistent red SOS LED or inoperative Toyota App functions. The TSB provides guidance for accurately diagnosing the root cause of these telematics system malfunctions.

What this TSB addresses

This TSB provides Toyota technicians with detailed information and procedures to diagnose and rectify the various telematics system malfunctions. While the specific repair steps are not detailed in the summary, TSBs typically involve software updates, re-initialization procedures, or, in some cases, replacement of faulty components within the telematics system to restore full functionality.

Owner Action

If you own a 2021-2022 Toyota Camry, RAV4, Corolla, Avalon, or Venza and are experiencing any of the symptoms mentioned, especially if you see a persistent red SOS LED or issues with your Toyota App or remote services, it is recommended to contact your authorized Toyota dealership. Inform them about the specific issues you are facing and mention the "Toyota Camry DTC B15A804" if you have had the vehicle scanned. Your dealer can perform the necessary diagnostics and apply the appropriate remedies outlined in TSB 10214351.

Source: NHTSA ID 10214351