# Service bulletin T\-SB\-0033\-22 Rev

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10220238
- Published by NHTSA: 2022\-09\-15
- Manufacturer's number: T\-SB\-0033\-22 Rev
- Manufacturer's date: 2022\-08\-18
- NHTSA component: HYBRID PROPULSION SYSTEM

## NHTSA's summary

TSB: Hybrid vehicles are equipped with two types of batteries: ?Hybrid vehicle \(HV\) battery. ?Auxiliary \(12V\) battery. If the hybrid vehicle is put into storage, the State\-Of\-Charge \(SOC\) of its HV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary. As a matter of policy, Toyota does not provide battery warranty coverage for discharged and/or failed batteries due to lack of maintenance. It is the dealer?s responsibility to maintain the specified SOC of the vehicle?s battery while in stock and ensure proper SOC at delivery.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10220238-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10220238-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Hybrid and electric drive

## Vehicles listed

- 2023 TOYOTA CAMRY HYBRID
- 2023 TOYOTA COROLLA HYBRID
- 2023 TOYOTA HIGHLANDER HYBRID
- 2023 TOYOTA MIRAI
- 2023 TOYOTA SEQUOIA HYBRID
- 2023 TOYOTA SIENNA HYBRID
- 2023 TOYOTA TUNDRA HYBRID
- 2023 TOYOTA VENZA HYBRID

## Other bulletins for the same vehicles and component

- [22TE09b](/bulletins/10252274.md), 2024-04-01, Service bulletin: ENGINE AND ENGINE COOLING; HYBRID PROPULSION SYSTEM. TI: TECHNICAL INSTRUCTIONS FOR CUSTOMER SUPPORT PROGRAM 22TE09 HV FLOOR UNDER WIRE HARNESS AND REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2021 ? 2022 MODEL YEAR SIENNA HYBRID
- [22TE09](/bulletins/10252272.md), 2024-04-01, Service bulletin: ENGINE AND ENGINE COOLING; HYBRID PROPULSION SYSTEM. DP: Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota?s New Vehicle Limited Warranty for 3 years or 36,000 miles \(whichever comes first\), we at Toyota care about the customers? ownership experience. Toyota is providing coverage for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start.
- [TSB001823](/bulletins/10252252.md), 2024-04-01, Service bulletin: ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE \(HPCU\); ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE. TSB: Some 2021 ? 2023 model year Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code \(DTC\) P060694 \(Hybrid/EV Powertrain Control Module Processor Unexpected Operation\) present. The Hybrid Vehicle Control Computer logic has been modified to reduce the possibility of this DTC setting incorrectly. Follow the Repair Procedure in this bulletin to address this condition.
- [TSB008523A](/bulletins/10247820.md), 2023-12-26, Service bulletin: ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT; ELECTRICAL SYSTEM. TSB: Some 2016 ? 2023 model year Toyota vehicles may exhibit a hybrid system warning lamp occurring in below\-freezing temperatures \(below 32°F or 0°C\). After performing a Health Check, one or both of the following Diagnostic Trouble Codes \(DTCs\) may be present: ?P1C8449 ? \(High Voltage Power Resource Circuit Short during Ready ON\) ?P300449 ? \(High Voltage Power Resource Circuit Short during Pre\-Charge\) Follow the Repair Procedure in this bulletin to address this condition.
- [T\-SB\-0018\-23](/bulletins/10236206.md), 2023-05-15, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT. TSB: Some 2021 ? 2023 model year Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code \(DTC\) P060694 \(Hybrid/EV Powertrain Control Module Processor Unexpected Operation\) present. The Hybrid Vehicle Control Computer logic has been modified to reduce the possibility of this condition.
- [T\-SB\-0033\-22](/bulletins/10211787.md), 2022-05-16, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY. TSB: Hybrid vehicles are equipped with two types of batteries: ?Hybrid vehicle \(HV\) battery. ?Auxiliary \(12V\) battery. If the hybrid vehicle is put into storage, the State\-Of\-Charge \(SOC\) of its HV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary. As a matter of policy, Toyota does not provide battery warranty coverage for discharged and/or failed batteries due to lack of maintenance. It is the dealer?s responsibility to maintain the specified SOC of the vehicle?s battery while in stock and ensure proper SOC at delivery

JSON: [/v1/bulletins/10220238](/v1/bulletins/10220238)

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