MG
Moderator
Please see T-SB-0039-21 (Link Needed)
REVISION NOTICE:
March 16, 2022 Rev1:
Applicability has been updated to include 2022 model year Tundra HV vehicles. Any previous printed versions of this bulletin should be discarded.
Introduction:
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.
Perform the following maintenance service for the HV battery and auxiliary battery.
Before Delivery:
1. BEFORE charging the auxiliary battery, turn OFF ALL lights, accessories, and the hybrid system.
2. Check the battery SOC.
* If the battery voltage is LESS THAN 12.6V, continue to step 3.
* If the battery voltage is 12.6V or MORE, replace the positive (+) terminal cover, install the battery cover (if applicable), and close the luggage compartment/hood.
3. Test the auxiliary battery using the DCA-8000 battery diagnostic tool’s Advanced Battery Test mode. If charging is required, the DCA-8000 battery diagnostic tool will automatically start to charge.
A. Connect the red charger clamp to the positive (+) terminal and the black charger clamp to the negative (–) terminal.
B. Plug the charger into a grounded 110V outlet and press the power button.
C. Once the DCA-8000 battery diagnostic tool is properly turned ON, perform an Advanced Battery Test. The DCA-8000 battery diagnostic tool will indicate results when complete. If the battery tests bad “Replace Battery,” replace the auxiliary battery.
4. If the DCA-8000 battery diagnostic tool is NOT available, you may charge the auxiliary battery by cycling the vehicle to Ready ON.
* Run time will vary depending on the battery SOC.
* If this method is used, you MUST confirm that the battery is charged to 12.8V using a DVOM.
To Store for 30 Days or More-Disconnect the Negative (–) Terminal (Except Mirai)
1. Turn OFF ALL lights, accessories, and the hybrid system.
2. Disconnect the negative (–) terminal.
3. When removing the vehicle from storage, connect the negative (–) terminal. Please refer to applicable Repair Manual for torque specifications
Periodical Battery Charging-Cycle Vehicle to Ready ON
1. Park the vehicle in open air or connect the exhaust extraction hose to the exhaust pipe.
2. Apply the parking brake.
3. With the brake pedal depressed, push the Power button and check that the Ready light in the meter illuminates when the hybrid system starts (the Ready light is ON).
4. Turn OFF ALL lights and accessories.
5. Check that the shift lever is in the “P” position.
6. Keep the Ready light ON and charge the HV battery for 30 minutes
REVISION NOTICE:
March 16, 2022 Rev1:
Applicability has been updated to include 2022 model year Tundra HV vehicles. Any previous printed versions of this bulletin should be discarded.
Introduction:
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.
Perform the following maintenance service for the HV battery and auxiliary battery.
Before Delivery:
1. BEFORE charging the auxiliary battery, turn OFF ALL lights, accessories, and the hybrid system.
2. Check the battery SOC.
* If the battery voltage is LESS THAN 12.6V, continue to step 3.
* If the battery voltage is 12.6V or MORE, replace the positive (+) terminal cover, install the battery cover (if applicable), and close the luggage compartment/hood.
3. Test the auxiliary battery using the DCA-8000 battery diagnostic tool’s Advanced Battery Test mode. If charging is required, the DCA-8000 battery diagnostic tool will automatically start to charge.
A. Connect the red charger clamp to the positive (+) terminal and the black charger clamp to the negative (–) terminal.
B. Plug the charger into a grounded 110V outlet and press the power button.
C. Once the DCA-8000 battery diagnostic tool is properly turned ON, perform an Advanced Battery Test. The DCA-8000 battery diagnostic tool will indicate results when complete. If the battery tests bad “Replace Battery,” replace the auxiliary battery.
4. If the DCA-8000 battery diagnostic tool is NOT available, you may charge the auxiliary battery by cycling the vehicle to Ready ON.
* Run time will vary depending on the battery SOC.
* If this method is used, you MUST confirm that the battery is charged to 12.8V using a DVOM.
To Store for 30 Days or More-Disconnect the Negative (–) Terminal (Except Mirai)
1. Turn OFF ALL lights, accessories, and the hybrid system.
2. Disconnect the negative (–) terminal.
3. When removing the vehicle from storage, connect the negative (–) terminal. Please refer to applicable Repair Manual for torque specifications
Periodical Battery Charging-Cycle Vehicle to Ready ON
1. Park the vehicle in open air or connect the exhaust extraction hose to the exhaust pipe.
2. Apply the parking brake.
3. With the brake pedal depressed, push the Power button and check that the Ready light in the meter illuminates when the hybrid system starts (the Ready light is ON).
4. Turn OFF ALL lights and accessories.
5. Check that the shift lever is in the “P” position.
6. Keep the Ready light ON and charge the HV battery for 30 minutes