Service bulletin T-TT-0208-12

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)
Type	Service bulletin
NHTSA id	10062028
Published by NHTSA	2016-04-12
Manufacturer's number	T-TT-0208-12
Manufacturer's date	2013-01-29
NHTSA component	ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY

NHTSA's summary

SUMMARY TO BE PROVIDED ON A FUTURE DATE.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Engine, 12-volt battery

Vehicles listed
TOYOTA RAV4 EV	2012, 2013 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
23V734000	2023-11-01. 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
Dealer Daily Mes	2021-04-19. Service bulletin. DD: On 2/25/2021, NHTSA opened an investigation into certain RAV4 vehicles related to the 12V battery.
Dealer Daily Mes	2021-04-19. Service bulletin. DD: On 2/25/2021, NHTSA opened an investigation into certain RAV4 vehicles related to the 12V battery.
T-TT-0362-15	2018-04-23. Service bulletin. TT: The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted.
T-TT-0118-11 Rev	2018-04-23. Service bulletin. technicians should confirm the following key points to minimize the potential for future MIL "ON" concerns after HV Battery Replacement.
T-SB-0001-13	2018-04-23. Service bulletin. If the RAV4 EV is put into storage, the state of charge (SOC) of the EV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary. Please perform the following maintenance service for the EV battery and 12-volt auxiliary battery.
T-TT-0086-11	2018-04-02. Service bulletin. TechTip: Condition - The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted.
T-TT-0206-12 Rev	2018-04-02. Service bulletin. Some customers may experience a ?Check EV System? message after attempting to charge their vehicle. No other vehicle operation or performance issues are present.
T-SB-0082-13 Rev	2018-04-02. Service bulletin. Some 2012 ? 2013 model year RAV4 EV vehicles may experience a condition where the charge schedule function is intermittently inoperative. The condition may result from power interruption including: momentary blackout from the utility company, long term power outage, removing and reconnecting the charging plug, or other circumstances. Follow the procedure in this bulletin to update the multi-information display software to address this condition.
T-SB-0001-13 Rev	2018-04-02. Service bulletin. If the RAV4 EV is put into storage, the state of charge (SOC) of the EV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary.
T-SB-0025-15	2017-08-14. Service bulletin. TSB: While a vehicle is in inventory, the battery is subject to conditions that can reduce its performance and life. Batteries can become discharged due to an extended storage period, temperature, parasitic drain, or while demonstrating vehicle features and benefits in the sales process. Battery inspection and maintenance are required in order to ensure proper operation and optimal battery life. As described in this bulletin, operating the engine for 30 minutes after 60 days in storage and every 30 days thereafter will help to maintain battery State of Charge (SOC). This process supplements other movements of the vehicle as it is staged, and has specific restrictions on how maintenance is to be done. Also described in this bulletin are 2 other approved methods for maintaining battery State of Charge.