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…
Also applies to
- 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.
Other revisions of this 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
What Toyota Camry owners report
Counted from the records in our database across 44 model years.
- 19,642
- Owner complaints
- 74
- Recalls
- 1,998
- Service bulletins
- 2,952
- Crashes reported
- 433
- Fires reported
- 2,097
- Injuries reported
The 2021 model year
166 complaints, the 30th most of 44 model years on file. Owners reported 21 crashes, 2 fires and 16 injuries for this year, which also has 1 recall on file.
Equipment and Electrical System, the system this article covers, accounts for 1,719 of 19,642 complaints (9%), including 8 for 2021.
Complaints by model year
| 2002 | 953 | |
|---|---|---|
| 2003 | 782 | |
| 2004 | 638 | |
| 2005 | 721 | |
| 2007 | 3,490 | |
| 2008 | 1,095 | |
| 2009 | 1,412 | |
| 2012 | 645 | |
| 2018 | 782 | |
| 2021 | 166 |
Most-reported systems
- Vehicle Speed Control — 3,431
- Service Brakes — 2,805
- Structure — 1,910
- Power Train — 1,796
- Air Bags — 1,712
Latest recalls for the 2021 model year
- 23V865000 — Air Bags (Dec 2023)
Recent owner reports about equipment and electrical system
Driving very slowly into my 36 foot deep garage I took my right foot off the accelerator pedal when the 2021 Toyota Camry suddenly unintended accelerated forward 15 feet and crashed through the rear garage wall, the automatic brake didn't work,.
Read owner complaints →The driver side rear door would not open from the inside or outside. Once the dealership opened the back door, the vehicle would no longer lock at all. There was nothing to indicate this would be a problem.
Complaints are owner reports filed with NHTSA. They are unverified, and counts depend on how many vehicles were sold, so they are not a failure rate.
Related Articles
2021 Toyota Camry Health Check: Common TSBs and Owner Concerns
While the 2021 Toyota Camry has no recalls or owner complaints, several manufacturer service bulletins address potential issues. Key concerns include engine coolant leaks, transmission whine, and Malfunction Indicator Lamp (MIL) illumination with reduced engine power, especially in cold weather.
2021-2026 Toyota Vehicles Musty Odor Remediation TSB
This Toyota Technical Service Bulletin (T-SB-0055-24 Rev2) addresses musty odors in 2021-2026 Toyota vehicles resulting from water intrusion. It outlines a dealer-performed remediation process, including inspection, cleaning, and ozone treatment.
2021 Toyota Camry Coolant Leak Customer Support Program
Toyota's Customer Support Program 24TE04 addresses a potential flow shut-off valve coolant leak in certain 2019-2021 Avalon, Camry, Corolla, Highlander, RAV4, Sienna, and Venza models. This leak can trigger an 'Engine Maintenance Required' warning or affect A/C function. Toyota will cover repairs…
2018-2021 Toyota Engine Maintenance Required TSB P268111 P268115
Toyota has issued Technical Service Bulletin T-SB-0112-24 Rev2 for certain 2018-2021 Toyota models that may display an "Engine Maintenance Required" message along with Diagnostic Trouble Codes P268111 or P268115. This bulletin outlines the procedure to address issues with the Engine Coolant Bypass…
2021-2022 Toyota MIL ON with DTCs P01201C, P210015
Toyota T-SB-0005-24 Rev2 addresses Malfunction Indicator Lamp (MIL) illumination and reduced engine power in 2021-2022 Toyota Avalon, Camry, and RAV4 vehicles. The issue is linked to specific throttle body DTCs (P01201C, P210015, P210019, P211172) occurring in freezing temperatures, requiring ECM…
Leave a comment
Comments are moderated and may take a moment to appear. Only your first name and the initial of your last name are shown publicly.
Comments
Be the first to comment.