2021-2022 Toyota DCM Firmware Update Failure
Some 2021-2022 Toyota vehicles equipped with 19CY LG DCM may fail to complete firmware updates due to inactive accounts or waived services. A technical service bulletin outlines a procedure to enable 'Temp DCM Activation' to fix this.
Also applies to
- Toyota Avalon
- 2021–2022
- Toyota Camry
- 2022
- Toyota Corolla
- 2021–2022
- Toyota Corolla Cross
- 2022
- Toyota RAV4
- 2021–2022
- Toyota Venza
- 2021–2022
Symptoms of DCM Firmware Update Failure
Owners of certain 2021-2022 Toyota vehicles, including the 2021 TOYOTA Camry, might encounter issues where the Data Communication Module (DCM) fails to complete its firmware update. This problem specifically affects vehicles equipped with the 19CY LG DCM. The primary symptom is the inability of the system to finalize the necessary software updates for the module. This specific issue is addressed by a 2021 TOYOTA Camry manufacturer_communication.
Diagnosis and Trigger Conditions
The root cause for the DCM firmware update failure is often linked to the vehicle's service status. The update process may not complete if the vehicle does not have an active account or if the connected services were waived during the trial period. This condition prevents the system from proceeding with the firmware installation. This scenario is precisely what the 2021 TOYOTA Camry manufacturer_communication aims to resolve.
Repair Procedure Summary
To address the DCM firmware update failure, Toyota has issued a technical service bulletin (NHTSA ID 10245454) detailing a specific procedure for dealerships. Technicians are instructed to enable "Temp DCM Activation." This temporary activation allows the vehicle to bypass the account or service status check, thereby enabling the firmware update to complete successfully.
What Owners Should Do
If you own a 2021-2022 Toyota model, such as a 2021 TOYOTA Camry, and suspect a DCM firmware update issue, it is recommended to visit your authorized Toyota dealership. The dealership has the necessary tools and information, including this 2021 TOYOTA Camry manufacturer_communication, to diagnose and perform the "Temp DCM Activation" procedure. This service should resolve the firmware update problem.
Source: NHTSA ID: 10245454
Frequently Asked Questions
- What is a DCM firmware update failure in Toyota vehicles?
- A DCM firmware update failure occurs when the Data Communication Module in certain 2021-2022 Toyota models cannot complete its software updates. This can be caused by an inactive connected services account or waived trial services.
- Which Toyota models are affected by the DCM firmware update issue?
- This issue affects 2021-2022 Toyota Camry, Avalon, Corolla, Corolla Cross, RAV4, and Venza models equipped with the 19CY LG DCM.
- What is 'Temp DCM Activation'?
- 'Temp DCM Activation' is a temporary measure that allows a dealership to bypass the account or service status check for the Data Communication Module, enabling the firmware update to complete successfully.
- Will I be charged to fix a DCM firmware update failure?
- As this issue is addressed by a manufacturer communication (TSB NHTSA ID 10245454), it is typically covered under warranty. It is best to confirm with your authorized Toyota dealership.
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.
Electrical System, the system this article covers, accounts for 1,441 of 19,642 complaints (7%), 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 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.
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