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Service bulletin T-TT-0553-19 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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10178787
Published by NHTSA2020-08-24
Manufacturer's numberT-TT-0553-19 Rev
Manufacturer's date2020-07-20
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY

NHTSA's summary

TT: The new DCA-8000 Diagnostic Charger may cause your facility?s Ground Fault Circuit Interrupter (GFCI) breaker to trip. A GFCI breaker can be tripped for various reasons, one of the reasons may be related to the DCA-8000. We are investigating this issue to determine the root cause. Other reasons the GFCI breaker may trip ?Circuit demand is too high for GFCI rating ?Worn out GFCI internal contacts ?Improper installation or wiring of GFCI breaker

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, 12-volt battery

Vehicles listed
TOYOTA 4RUNNER2017, 2018, 2019, 2020
TOYOTA 862017, 2018, 2019, 2020
TOYOTA AVALON2017, 2018, 2019, 2020
TOYOTA AVALON HYBRID2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA C-HR2017
TOYOTA C-HR2018, 2019, 2020
TOYOTA CAMRY2017, 2018, 2019, 2020
TOYOTA CAMRY HYBRID2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA COROLLA2017, 2018, 2019, 2020
TOYOTA COROLLA HATCHBACK2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA COROLLA HYBRID2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA COROLLA IM2017, 2018
TOYOTA HIGHLANDER2017, 2018, 2019, 2020
TOYOTA HIGHLANDER HYBRID2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA LAND CRUISER2017, 2018, 2019, 2020
TOYOTA MIRAI2017, 2018, 2019, 2020
TOYOTA PRIUS2017, 2018, 2019, 2020
TOYOTA PRIUS C2017, 2018, 2019, 2020
TOYOTA PRIUS PRIME2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA PRIUS V2017
TOYOTA PRIUS V2018 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA RAV42017, 2018, 2019, 2020
TOYOTA RAV4 HYBRID2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA SEQUOIA2017, 2018, 2019, 2020
TOYOTA SIENNA2017, 2018, 2019, 2020
TOYOTA SUPRA2020
TOYOTA TACOMA2017, 2018, 2019, 2020
TOYOTA TUNDRA2017, 2018, 2019, 2020
TOYOTA YARIS2017, 2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
23V7340002023-11-01. ELECTRICAL SYSTEM:12V/24V/48V BATTERY

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
T-TT-0687-222022-04-18. Service bulletin. TT: When customers have a concern about a discharged battery, no start, or general battery concern, the DCA-8000 is the only appropriate tool to use for diagnosis
Dealer Daily Mes2021-04-19. Service bulletin. DD: On 2/25/2021, NHTSA opened an investigation into certain RAV4 vehicles related to the 12V battery.
Dealer Daily Mes2021-04-19. Service bulletin. DD: On 2/25/2021, NHTSA opened an investigation into certain RAV4 vehicles related to the 12V battery.
T-SB-0095-20 Rev2021-02-16. Service bulletin. TSB: Some 2020 model year Camry, Camry Hybrid, Corolla Hatchback, RAV4, and RAV4 Hybrid vehicles may exhibit one or more of the following conditions: ?Diagnostic Trouble Code (DTC) B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Toyota App does not accept the activation code. ?Toyota App is inoperative. ?SOS call center does not receive the vehicle?s location in a timely manner. ?Toyota App shows an error 42 when trying to execute a command. ?Unable to remote start the vehicle with the key fob (if equipped). ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Destination Assist is inoperative Some 2020 ? 2021 model year Camry, Camry Hybrid, Corolla Hatchback, RAV4, and RAV4 Hybrid vehicles and some 2021 model year Avalon, Avalon Hybrid, Corolla, Corolla Hybrid, Sienna Hybrid, and Venza Hybrid vehicles may exhibit one or more of the following conditions: ?DTC B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Toyota App is inoperative. ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Depleted 12V vehicle battery when in IG-OFF. Some 2020 ? 2021 model year Camry, Camry Hybrid, Corolla Hatchback, RAV4, and RAV4 Hybrid vehicles and some 2021 model year Avalon, Avalon Hybrid, Corolla, Corolla Hybrid, Sienna Hybrid, and Venza Hybrid vehicles may exhibit the following condition: ?Depleted 12V vehicle battery when in IG-OFF. A DCM reset and firmware update is now available to address these conditions. Follow the DCM Reset and Firmware Update Procedure in this bulletin to update the firmware.
T-SB-0095-20 Rev2021-02-16. Service bulletin. TSB: Some 2020 model year Camry, Camry Hybrid, Corolla Hatchback, RAV4, and RAV4 Hybrid vehicles may exhibit one or more of the following conditions: ?Diagnostic Trouble Code (DTC) B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Toyota App does not accept the activation code. ?Toyota App is inoperative. ?SOS call center does not receive the vehicle?s location in a timely manner. ?Toyota App shows an error 42 when trying to execute a command. ?Unable to remote start the vehicle with the key fob (if equipped). ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Destination Assist is inoperative. Some 2020 ? 2021 model year Camry, Camry Hybrid, Corolla Hatchback, RAV4, and RAV4 Hybrid vehicles and some 2021 model year Avalon, Avalon Hybrid, Corolla, Corolla Hybrid, Sienna Hybrid, and Venza Hybrid vehicles may exhibit one or more of the following conditions: ?DTC B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Toyota App is inoperative. ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Depleted 12V vehicle battery when in IG-OFF. A DCM reset and firmware update is now available to address these conditions. Follow the DCM Reset and Firmware Update Procedure in this bulletin to update the firmware.
T-TT-0625-202020-11-23. Service bulletin. TT: A 12V Battery Discharged and / or Dead condition can be due to multiple causes. In order to properly diagnose and determine the root cause it?s important to follow a structured process to identify any contributing issues and determine the proper remedy.
T-SB-0074-202020-09-14. Service bulletin. TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid Vehicle; 2016 ? 2020 model year Mirai and RAV4 Hybrid Vehicle; and 2020 model year Corolla Hybrid Vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A80/P1AC000 and/or P0A7F/P1A8000 stored due to dust or debris buildup in the HV battery cooling fan and/or HV cooling filter. Follow the procedure in this bulletin to address this condition.
T-SB-0036-162020-08-24. Service bulletin. TSB: Some 2010 - 2015 model year Prius and 2012 - 2017 model year Prius V vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A94, P324E, P0A1A, and/or P3004, indicating a malfunction has occurred in the inverter assembly with converter. Follow the Repair Procedure in this bulletin to identify the specific components within the inverter assembly with converter that need to be replaced and address this condition.
T-SB-0077-19_Rev2020-04-13. Service bulletin. TSB: Some 2019 model year RAV4 Hybrid vehicles may exhibit a flutter/rattle noise during vehicle operation from the HV battery cooling fan. A new HV battery intake duct has been developed. Follow the Repair Procedure in this bulletin to address this condition.
T-TT-0556-192019-09-16. Service bulletin. TT: When testing the battery during PDS with either the DSS-5000 or DCA-8000 battery diagnostic tools, the battery tester may provide inaccurate results if it is connected to the remote battery posts under the hood.