2021-2022 Toyota Connectivity Issues TSB
Toyota has released a Technical Service Bulletin (TSB) for various 2021-2022 models, including the 2021 TOYOTA Camry, to address common connectivity problems. These issues range from Diagnostic Trouble Code (DTC) B15A804 to an inoperative Toyota App, persistent SOS LED, and remote service…
David Chen2021 Toyota Camry
Gilt auch für
- Toyota Avalon
- 2021–2022
- Toyota Camry
- 2022
- Toyota Corolla
- 2021–2022
- Toyota RAV4
- 2021–2022
- Toyota Venza
- 2021–2022
Symptoms
Owners of certain 2021-2022 Toyota models, including the 2021 TOYOTA Camry manufacturer_communication, may experience various connectivity and system malfunctions. These can include a persistent "Red SOS LED stays on after bulb check" or a completely "Toyota App is inoperative."
Other reported symptoms include the "Toyota App does not accept the activation code" or displaying "error 42 when trying to execute a command." Owners might also find themselves "Unable to remote start the vehicle with the key fob," "Unable to subscribe to remote services," or "Unable to activate Wi-Fi." In some cases, the "SOS call center does not receive the vehicle's location in a timely manner," or the "Destination Assist is inoperative." A more severe symptom is a "Depleted 12V vehicle battery when in IG-OFF," and some vehicles may be "Unable to reconnect out of network."
Fault Codes / DTCs
The primary diagnostic trouble code associated with these connectivity issues is:
| Code | Description |
|---|---|
| B15A804 | Data Communication Module (DCM) Malfunction |
This DTC B15A804 indicates a problem with the vehicle's Data Communication Module, which is central to many of the reported symptoms.
Repair Procedure Summary
Toyota has issued a Technical Service Bulletin (TSB) to address these conditions. The recommended repair involves performing a Data Communication Module (DCM) reset followed by a firmware update. This procedure aims to resolve the underlying software and communication issues within the DCM that lead to the various symptoms and the B15A804 fault code.
Owner Action
If you are experiencing any of the described connectivity problems with your 2021-2022 Toyota vehicle, such as an inoperative Toyota App or the "Red SOS LED stays on after bulb check," you should contact your authorized Toyota dealership. Inform them of the symptoms you are observing and mention the potential need for a DCM reset and firmware update as outlined in this manufacturer communication. This service should resolve the issues, including those affecting the 2021 TOYOTA Camry manufacturer_communication.
Source: NHTSA ID: 10224104
Frequently Asked Questions
- What does DTC B15A804 mean for my Toyota?
- DTC B15A804 indicates a malfunction in your vehicle's Data Communication Module (DCM), which can lead to various connectivity issues and problems with features like the Toyota App and SOS services.
- My Toyota App shows "error 42." What should I do?
- An "error 42" message on your Toyota App is a known symptom addressed by a Toyota TSB. It's recommended to visit your dealership for a DCM reset and firmware update.
- Will a DCM firmware update fix my "Red SOS LED stays on after bulb check" issue?
- Yes, if your vehicle is affected by the TSB, a DCM reset and firmware update are specifically designed to resolve issues like the persistent "Red SOS LED stays on after bulb check."
- Which Toyota models are affected by these connectivity issues?
- This TSB applies to certain 2021-2022 Toyota Camry, Camry Hybrid, Corolla Hatchback, RAV4, RAV4 Hybrid, Avalon, Avalon Hybrid, Corolla, Corolla Hybrid, Sienna Hybrid, and Venza Hybrid vehicles.
Weitere Revisionen dieses TSB
- 2021-2022 Toyota Communication System Fault TSBB15A804
- 2021-2022 Toyota Camry, RAV4, Corolla SOS System TSBB15A804
- 2021 Toyota Connectivity Issues TSBB15A804
- 2021 Toyota Camry DCM Issues and DTC B15A804B15A804
- 2021 Toyota Camry B15A804 DTC and DCM UpdateB15A804
- 2021 Toyota Camry DCM Issues and DTC B15A804B15A804
- 2021 Toyota Camry DCM Faults and Connectivity IssuesB15A804
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