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Technical Service Bulletins of the 2023 Toyota Bz4x

There have been 22 technical service bulletins issued for the 2023 Toyota Bz4x.

1 2023 Toyota Bz4x electrical system:ignition:anti-theft:immobilizer/proximity:key/sender TSB (Bulletin 23TJ01_P5_Dealer)

Bulletin Date:	Mar. 12, 2024
Component:	Electrical system:ignition:anti-theft:immobilizer/proximity:key/sender.
Bulletin Summary:	Dp: the subject vehicles were delivered with only one (1) Smart key on select models since October 2022 due to a global semiconductor shortage impacting certain microchips. The affected vehicles were delivered with one (1) Smart key and a s
Vehicles covered in this TSB:	2023 Toyota 4runner, 2023 Toyota Bz4x, 2024 Toyota Bz4x, 2022 Toyota C-hr, 2023 Toyota Camry, 2023 Toyota Crown, 2024 Toyota Crown, 2024 Toyota Grand Highlander, 2022 Toyota Highlander, 2023 Toyota Highlander, 2022 Toyota Highlander Hybrid, 2023 Toyota Highlander Hybrid, 2022 Toyota Mirai, 2023 Toyota Mirai, 2022 Toyota Prius, 2023 Toyota Prius, 2024 Toyota Prius, 2022 Toyota Prius Prime, 2023 Toyota Prius Prime, 2024 Toyota Prius Prime, 2022 Toyota RAV4, 2023 Toyota RAV4, 2022 Toyota Rav4 Hybrid, 2023 Toyota Rav4 Hybrid, 2023 Toyota Rav4 Prime, 2024 Toyota Rav4 Prime, 2023 Toyota Sequoia, 2024 Toyota Sequoia, 2023 Toyota Sienna, 2024 Toyota Sienna, 2022 Toyota Tundra, 2023 Toyota Tundra, 2024 Toyota Tundra, 2022 Toyota Tundra Hybrid, 2023 Toyota Tundra Hybrid, 2024 Toyota Tundra Hybrid, 2023 Toyota Venza Hybrid, 2024 Toyota Venza Hybrid.

2 2023 Toyota Bz4x electrical system:ignition:anti-theft:immobilizer/proximity:key/sender TSB (Bulletin Toyota Second Ke)

Bulletin Date:	Mar. 12, 2024
Component:	Electrical system:ignition:anti-theft:immobilizer/proximity:key/sender.
Bulletin Summary:	The table describes the phases currently planned for the second key delivery program and the estimated timing of announcement. This table will be updated during each phase launch and as more details become available.
Vehicles covered in this TSB:	2023 Toyota 4runner, 2023 Toyota Bz4x, 2024 Toyota Bz4x, 2022 Toyota C-hr, 2023 Toyota Camry, 2023 Toyota Crown, 2024 Toyota Crown, 2024 Toyota Grand Highlander, 2022 Toyota Highlander, 2023 Toyota Highlander, 2022 Toyota Highlander Hybrid, 2023 Toyota Highlander Hybrid, 2022 Toyota Mirai, 2023 Toyota Mirai, 2022 Toyota Prius, 2023 Toyota Prius, 2024 Toyota Prius, 2022 Toyota Prius Prime, 2023 Toyota Prius Prime, 2024 Toyota Prius Prime, 2022 Toyota RAV4, 2023 Toyota RAV4, 2022 Toyota Rav4 Hybrid, 2023 Toyota Rav4 Hybrid, 2023 Toyota Rav4 Prime, 2024 Toyota Rav4 Prime, 2023 Toyota Sequoia, 2024 Toyota Sequoia, 2023 Toyota Sienna, 2024 Toyota Sienna, 2022 Toyota Tundra, 2023 Toyota Tundra, 2024 Toyota Tundra, 2022 Toyota Tundra Hybrid, 2023 Toyota Tundra Hybrid, 2024 Toyota Tundra Hybrid, 2023 Toyota Venza Hybrid, 2024 Toyota Venza Hybrid.

3 2023 Toyota Bz4x electrical system TSB (Bulletin T-PANT-2024-001-)

Bulletin Date:	Feb. 1, 2024
Component:	Electrical system.
Bulletin Summary:	Pant: Toyota is pleased to announce to all field and dealer personnel that we have launched a new part number to the Toyota complete maintenance care (tcmc) program, effective February 1, 2024. This new h4 battery will be phased in over tim
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2024 Toyota Bz4x, 2025 Toyota Bz4x, 2016 Toyota Prius, 2017 Toyota Prius, 2018 Toyota Prius, 2019 Toyota Prius, 2020 Toyota Prius, 2021 Toyota Prius, 2022 Toyota Prius, 2023 Toyota Prius, 2024 Toyota Prius, 2025 Toyota Prius, 2017 Toyota Prius Prime, 2018 Toyota Prius Prime, 2019 Toyota Prius Prime, 2020 Toyota Prius Prime, 2021 Toyota Prius Prime, 2022 Toyota Prius Prime, 2023 Toyota Prius Prime, 2024 Toyota Prius Prime, 2025 Toyota Prius Prime, 2019 Toyota Rav4 Hybrid, 2020 Toyota Rav4 Hybrid, 2021 Toyota Rav4 Hybrid, 2022 Toyota Rav4 Hybrid, 2023 Toyota Rav4 Hybrid, 2024 Toyota Rav4 Hybrid, 2025 Toyota Rav4 Hybrid.

4 2023 Toyota Bz4x electrical system:ignition:anti-theft:immobilizer/proximity:key/sender TSB (Bulletin Dealer Packet)

Bulletin Date:	Jan. 31, 2024
Component:	Electrical system:ignition:anti-theft:immobilizer/proximity:key/sender.
Bulletin Summary:	Dp: the subject vehicles were delivered with only one (1) Smart key on select models since October 2022 due to a global semiconductor shortage impacting certain microchips. The affected vehicles were delivered with one (1) Smart key and a s
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2024 Toyota Bz4x, 2023 Toyota Crown, 2024 Toyota Crown, 2024 Toyota Grand Highlander, 2023 Toyota Prius, 2024 Toyota Prius, 2023 Toyota Prius Prime, 2024 Toyota Prius Prime, 2023 Toyota Rav4 Prime, 2024 Toyota Rav4 Prime, 2023 Toyota Sequoia, 2024 Toyota Sequoia, 2023 Toyota Sienna, 2024 Toyota Sienna, 2023 Toyota Sienna Hybrid, 2024 Toyota Sienna Hybrid, 2022 Toyota Tundra, 2023 Toyota Tundra, 2024 Toyota Tundra, 2022 Toyota Tundra Hybrid, 2023 Toyota Tundra Hybrid, 2024 Toyota Tundra Hybrid, 2023 Toyota Venza, 2024 Toyota Venza, 2023 Toyota Venza Hybrid, 2024 Toyota Venza Hybrid.

5 2023 Toyota Bz4x electrical system:ignition:anti-theft:immobilizer/proximity:key/sender TSB (Bulletin Current Phase Ti)

Bulletin Date:	Jan. 31, 2024
Component:	Electrical system:ignition:anti-theft:immobilizer/proximity:key/sender.
Bulletin Summary:	The table describes the phases currently planned for the second key delivery program and the estimated timing of announcement. This table will be updated during each phase launch and as more details become available.
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2024 Toyota Bz4x, 2023 Toyota Crown, 2024 Toyota Crown, 2024 Toyota Grand Highlander, 2023 Toyota Prius, 2024 Toyota Prius, 2023 Toyota Prius Prime, 2024 Toyota Prius Prime, 2023 Toyota Rav4 Prime, 2024 Toyota Rav4 Prime, 2023 Toyota Sequoia, 2024 Toyota Sequoia, 2023 Toyota Sienna, 2024 Toyota Sienna, 2023 Toyota Sienna Hybrid, 2024 Toyota Sienna Hybrid, 2022 Toyota Tundra, 2023 Toyota Tundra, 2024 Toyota Tundra, 2022 Toyota Tundra Hybrid, 2023 Toyota Tundra Hybrid, 2024 Toyota Tundra Hybrid, 2023 Toyota Venza, 2024 Toyota Venza, 2023 Toyota Venza Hybrid, 2024 Toyota Venza Hybrid.

6 2023 Toyota Bz4x electrical system:ignition:anti-theft:immobilizer/proximity:key/sender TSB (Bulletin Dealer Letter)

Bulletin Date:	Jan. 3, 2024
Component:	Electrical system:ignition:anti-theft:immobilizer/proximity:key/sender.
Bulletin Summary:	Dp: the subject vehicles were delivered with only one (1) Smart key on select models since October 2022 due to a global semiconductor shortage impacting certain microchips. The affected vehicles were delivered with one (1) Smart key and a s
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2024 Toyota Bz4x, 2023 Toyota Crown, 2024 Toyota Crown, 2024 Toyota Grand Highlander, 2023 Toyota Prius, 2024 Toyota Prius, 2023 Toyota Prius Prime, 2024 Toyota Prius Prime, 2023 Toyota Rav4 Prime, 2024 Toyota Rav4 Prime, 2023 Toyota Sequoia, 2024 Toyota Sequoia, 2023 Toyota Sienna, 2024 Toyota Sienna, 2023 Toyota Sienna Hybrid, 2024 Toyota Sienna Hybrid, 2022 Toyota Tundra, 2023 Toyota Tundra, 2024 Toyota Tundra, 2022 Toyota Tundra Hybrid, 2023 Toyota Tundra Hybrid, 2024 Toyota Tundra Hybrid, 2023 Toyota Venza, 2024 Toyota Venza, 2023 Toyota Venza Hybrid, 2024 Toyota Venza Hybrid.

7 2023 Toyota Bz4x air bags TSB (Bulletin 23TC01 Dealer Pa)

Bulletin Date:	Aug. 31, 2023
Component:	Air bags.
Bulletin Summary:	Dp: the subject vehicles are equipped with Toyota safety sense (tss) which consists of several driving assist features, including pre-collision braking, lane departure warning, and more. Due to inappropriate programming of the software with
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2023 Toyota Corolla, 2023 Toyota Corolla Cross, 2023 Toyota Corolla Hatchback.

8 2023 Toyota Bz4x lane departure TSB (Bulletin 23TC01 Dealer Pa)

Bulletin Date:	Aug. 31, 2023
Component:	Lane departure.
Bulletin Summary:	Dp: the subject vehicles are equipped with Toyota safety sense (tss) which consists of several driving assist features, including pre-collision braking, lane departure warning, and more. Due to inappropriate programming of the software with
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2023 Toyota Corolla, 2023 Toyota Corolla Cross, 2023 Toyota Corolla Hatchback.

9 2023 Toyota Bz4x air bags TSB (Bulletin 23TC01 Region Le)

Bulletin Date:	Aug. 31, 2023
Component:	Air bags.
Bulletin Summary:	Rl: the subject vehicles are equipped with Toyota safety sense (tss) which consists of several driving assist features, including pre-collision braking, lane departure warning, and more. Due to the programming of the software within the for
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2023 Toyota Corolla, 2023 Toyota Corolla Cross, 2023 Toyota Corolla Hatchback.

10 2023 Toyota Bz4x lane departure TSB (Bulletin 23TC01 Region Le)

Bulletin Date:	Aug. 31, 2023
Component:	Lane departure.
Bulletin Summary:	Rl: the subject vehicles are equipped with Toyota safety sense (tss) which consists of several driving assist features, including pre-collision braking, lane departure warning, and more. Due to the programming of the software within the for
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2023 Toyota Corolla, 2023 Toyota Corolla Cross, 2023 Toyota Corolla Hatchback.

11 2023 Toyota Bz4x air bags TSB (Bulletin 23TC01 TI - Publ)

Bulletin Date:	Aug. 31, 2023
Component:	Air bags.
Bulletin Summary:	Ti: technical instructions for 23tc01 Toyota safety sense inoperative intermittently
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2023 Toyota Corolla, 2023 Toyota Corolla Cross, 2023 Toyota Corolla Hatchback.

12 2023 Toyota Bz4x electrical system:ignition:anti-theft:immobilizer/proximity:key/sender TSB (Bulletin 23TJ01-1)

Bulletin Date:	Jun. 15, 2023
Component:	Electrical system:ignition:anti-theft:immobilizer/proximity:key/sender.
Bulletin Summary:	Rl: the supply of Smart keys available for Toyota vehicles has been temporarily limited to one (1) on select models since October 2022 due to global semiconductor shortages impacting certain microchips. Affected vehicles have been delivered
Vehicles covered in this TSB:	2023 Toyota 4runner, 2023 Toyota Bz4x, 2022 Toyota C-hr, 2022 Toyota Mirai, 2023 Toyota Mirai, 2022 Toyota Prius, 2023 Toyota Prius, 2022 Toyota Prius Prime, 2023 Toyota RAV4, 2023 Toyota Rav4 Hybrid, 2023 Toyota Rav4 Prime, 2023 Toyota Venza, 2023 Toyota Venza Hybrid.

13 2023 Toyota Bz4x electrical system:ignition:anti-theft:immobilizer/proximity:key/sender TSB (Bulletin 23TJ01-2)

Bulletin Date:	Jun. 15, 2023
Component:	Electrical system:ignition:anti-theft:immobilizer/proximity:key/sender.
Bulletin Summary:	Ti: technical instructions for 23tj01 second key delivery program
Vehicles covered in this TSB:	2023 Toyota 4runner, 2023 Toyota Bz4x, 2022 Toyota C-hr, 2022 Toyota Mirai, 2023 Toyota Mirai, 2022 Toyota Prius, 2023 Toyota Prius, 2022 Toyota Prius Prime, 2023 Toyota RAV4, 2023 Toyota Rav4 Prime, 2023 Toyota Venza.

14 2023 Toyota Bz4x electrical system:ignition:anti-theft:immobilizer/proximity:key/sender TSB (Bulletin 23TJ01)

Bulletin Date:	Jun. 15, 2023
Component:	Electrical system:ignition:anti-theft:immobilizer/proximity:key/sender.
Bulletin Summary:	Dp: the subject vehicles were delivered with only one (1) Smart key on select models since October 2022 due to a global semiconductor shortage impacting certain microchips. The affected vehicles were delivered with one (1) Smart key and a s
Vehicles covered in this TSB:	2023 Toyota 4runner, 2023 Toyota Bz4x, 2022 Toyota C-hr, 2022 Toyota Mirai, 2023 Toyota Mirai, 2022 Toyota Prius, 2023 Toyota Prius, 2022 Toyota Prius Prime, 2023 Toyota RAV4, 2023 Toyota Rav4 Hybrid, 2023 Toyota Rav4 Prime, 2023 Toyota Venza, 2023 Toyota Venza Hybrid.

15 2023 Toyota Bz4x radio/tape deck/cd TSB (Bulletin T-TT-0734-23)

Bulletin Date:	May. 1, 2023
Component:	Radio/tape deck/cd.
Bulletin Summary:	Tt: when setting up the Toyota audio multimedia (21mm) user profile, if the qr code is not working please use the following recommendations.
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2024 Toyota Bz4x, 2023 Toyota Corolla, 2022 Toyota Corolla Cross, 2023 Toyota Corolla Cross, 2024 Toyota Corolla Cross, 2023 Toyota Corolla Cross Hybrid, 2024 Toyota Corolla Cross Hybrid, 2023 Toyota Corolla Hatchback, 2024 Toyota Corolla Hatchback, 2023 Toyota Corolla Hybrid, 2024 Toyota Corolla Hybrid, 2023 Toyota Crown, 2024 Toyota Crown, 2024 Toyota Gr Corolla, 2024 Toyota Grand Highlander, 2024 Toyota Grand Highlander Hybrid, 2023 Toyota Highlander, 2023 Toyota Highlander Hybrid, 2024 Toyota Highlander Hybrid, 2023 Toyota RAV4, 2023 Toyota Rav4 Hybrid, 2024 Toyota Rav4 Hybrid, 2023 Toyota Rav4 Prime, 2023 Toyota Sequoia, 2023 Toyota Sequoia Hybrid, 2024 Toyota Sequoia Hybrid, 2022 Toyota Tundra, 2023 Toyota Tundra, 2024 Toyota Tundra, 2023 Toyota Tundra Hybrid, 2024 Toyota Tundra Hybrid, 2023 Toyota Venza, 2023 Toyota Venza Hybrid, 2024 Toyota Venza Hybrid.

16 2023 Toyota Bz4x electrical system:12v/24v/48v battery TSB (Bulletin T-TT-0727-23)

Bulletin Date:	Mar. 27, 2023
Component:	Electrical system:12v/24v/48v battery.
Bulletin Summary:	Tt: mil on with dtc p2d384b (hybrid/ev battery pack heater performance over temperature)
Vehicles covered in this TSB:	2023 Toyota Bz4x.

17 2023 Toyota Bz4x steering TSB (Bulletin T-SB-0120-20 Rev)

Bulletin Date:	Mar. 15, 2023
Component:	Steering.
Bulletin Summary:	TSB: some 2021 ? 2023 model year Toyota vehicles may require the download and installation of vehicle specific software or configuration software when the electronic control unit (ecu) is replaced. Techstream software has been modified to I
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2023 Toyota Corolla, 2023 Toyota Corolla Cross, 2023 Toyota Prius, 2023 Toyota Sequoia, 2022 Toyota Tundra, 2023 Toyota Tundra, 2021 Toyota Venza, 2022 Toyota Venza, 2023 Toyota Venza.

18 2023 Toyota Bz4x exterior lighting TSB (Bulletin T-SB-0012-23)

Bulletin Date:	Mar. 3, 2023
Component:	Exterior lighting.
Bulletin Summary:	TSB: some 2023 model year bz4x vehicles with multimedia version 1505 or older; corolla, corolla hybrid, and corolla hatchback vehicles with multimedia version 1506 or older; and crown vehicles with multimedia version 1511 or older may exhib
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2023 Toyota Corolla.

19 2023 Toyota Bz4x back over prevention TSB (Bulletin T-SB-0012-23)

Bulletin Date:	Mar. 3, 2023
Component:	Back over prevention.
Bulletin Summary:	TSB: some 2023 model year bz4x vehicles with multimedia version 1505 or older; corolla, corolla hybrid, and corolla hatchback vehicles with multimedia version 1506 or older; and crown vehicles with multimedia version 1511 or older may exhib
Vehicles covered in this TSB:	2023 Toyota Bz4x, 2023 Toyota Corolla.

20 2023 Toyota Bz4x equipment TSB (Bulletin T-TT-0709-22 Rev)

Bulletin Date:	Dec. 19, 2022
Component:	Equipment.
Bulletin Summary:	Tt: ?some customers may be concerned that ev (electric vehicle) battery charging performance does not meet their expectation. ?to extend the life of the ev battery, some limitations may occur during ev battery charging ?this communicati
Vehicles covered in this TSB:	2023 Toyota Bz4x.

Also see Toyota vehicle common problems.

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