Service Bulletin

22 Toyota Hybrid Battery Discharge Prevention TSB

Toyota has issued TSB 10214322 addressing the issue of hybrid and auxiliary battery discharge in 2022 hybrid vehicles, including the Toyota Camry, during storage. Proper maintenance is crucial to prevent discharge and ensure battery warranty coverage.

ByAhmet Topcu — Founder & Editor-in-ChiefAutomated summary2022 Toyota Camry
2022 TOYOTA Camry — Toyota Camry battery discharge
Editorial illustration generated for this article.
Toyota Camry battery dischargehybrid vehicle battery dischargeauxiliary battery discharge12V battery dischargeHV battery maintenanceauxiliary battery maintenanceToyota TSB 10214322battery warranty coverageState-Of-Charge (SOC)Toyota hybrid storage
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Toyota has released a Technical Service Bulletin (TSB) to address the natural discharge of batteries in its 2022 hybrid vehicles, including the Toyota Camry, when they are stored for periods of time. This TSB, identified as NHTSA ID 10214322, highlights the importance of proper battery maintenance to prevent issues and ensure continued warranty coverage.

Symptoms

The primary symptom of this condition is the gradual decrease in the State-Of-Charge (SOC) of both the hybrid vehicle (HV) battery and the auxiliary (12V) battery. If left unaddressed, this can lead to the auxiliary battery becoming fully discharged, which can prevent the vehicle from starting or operating correctly.

Diagnosis / Trigger Conditions

This battery discharge condition is expected to occur when a hybrid vehicle is put into storage. During storage, the SOC of both the HV battery and the auxiliary battery will naturally decrease over time. This is a normal characteristic, but it requires proactive management to avoid problems.

Important Warnings

Toyota explicitly states that it does not provide battery warranty coverage for discharged and/or failed batteries that result from a lack of proper maintenance. This means owners and dealers must adhere to the recommended maintenance procedures to protect the battery warranty.

What Owners Should Know

It is the dealer's responsibility to ensure the specified State-Of-Charge (SOC) of the vehicle's batteries while in stock and to confirm proper SOC at the time of delivery. Owners of a 2022 Toyota Camry or other affected hybrid models should be aware of this TSB, especially if their vehicle is stored for extended periods. While the TSB does not detail specific owner actions for maintenance, it emphasizes that proper maintenance is necessary to prevent the auxiliary battery from becoming discharged. If you experience a Toyota Camry battery discharge issue, especially after storage, discuss this TSB with your dealership.

Repair Procedure Summary

The TSB indicates that maintenance service for both the HV battery and the auxiliary battery must be performed. While the bulletin summary does not provide detailed steps for this maintenance, it underscores the necessity of these procedures to prevent battery discharge. Dealerships are responsible for maintaining the battery SOC for vehicles in their inventory and ensuring it is correct at delivery.

Owner Action

If you own a 2022 Toyota hybrid vehicle and plan to store it, or if you are experiencing a Toyota Camry battery discharge issue, it is advisable to consult your Toyota dealership. They can provide guidance on appropriate maintenance to prevent battery discharge and ensure your vehicle's batteries remain in optimal condition, thus avoiding potential warranty issues related to a discharged battery.


Source: NHTSA ID 10214322

Frequently Asked Questions

What is Toyota TSB 10214322 about?
Toyota TSB 10214322 addresses the natural discharge of both the hybrid (HV) and auxiliary (12V) batteries in 2022 Toyota hybrid vehicles, such as the Toyota Camry, when they are stored. It emphasizes the need for proper maintenance to prevent battery discharge.
Will a discharged battery be covered under warranty if I don't maintain it?
No, Toyota explicitly states that battery warranty coverage will not be provided for discharged or failed batteries that result from a lack of proper maintenance. This highlights the importance of following recommended battery care.
What should I do if my 2022 Toyota Camry hybrid battery discharge occurs after storage?
If you experience a Toyota Camry battery discharge after storing your vehicle, you should contact your Toyota dealership. They are responsible for maintaining battery State-Of-Charge (SOC) for vehicles in their care and can advise on the necessary maintenance to prevent future issues.

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 2022 model year

67 complaints, the 36th most of 44 model years on file. Owners reported 14 crashes, 1 fire and 9 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 9 for 2022.

Complaints by model year

Model years with the most complaints for the Toyota Camry
2002953
2003782
2004638
2005721
20073,490
20081,095
20091,412
2012645
2018782
202267

Most-reported systems

  1. Vehicle Speed Control — 3,431
  2. Service Brakes — 2,805
  3. Structure — 1,910
  4. Power Train — 1,796
  5. Air Bags — 1,712

Latest recalls for the 2022 model year

  • 23V865000 — Air Bags (Dec 2023)
All 2022 recalls →

Recent owner reports about electrical system

The menu display for stereo does not work. There is a recall on the 12.5 inch display which a representative from Toyota stated it could cause the menu options and stereo not to work, but when I took my vehicle to be serviced, it was not part of the recall.

2022 Toyota Camry owner, Sep 2025

The auxillary for the music has a short in it and Everytime a bump is hit it knocks it loose and it shuts off the whole thing. The screen and maps and music. The screen also freezes and my maps and route stopped working.

2022 Toyota Camry owner, Aug 2025
Read owner complaints →

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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