2023 Toyota BZ4X Technical Service Bulletins

162 technical service bulletins (TSBs) are on record for the 2023 Toyota BZ4X. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10247822Nov 21, 2023Electrical system. 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 second mechanical key.
• 10247809Nov 15, 2023Electrical system. TI: TECHNICAL INSTRUCTIONS FOR 23TJ01 Second Key Delivery Program Multiple Models and Model Years
• 10245459Oct 12, 2023Electrical system. TI: TECHNICAL INSTRUCTIONS FOR 23TJ01 Second Key Delivery Program Multiple Models and Model Years
• 10245458Oct 12, 2023Electrical system. 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 second mechanical key.
• 10245455Oct 11, 2023Electrical system. 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 with only one Smart Key and a second mechanical key.
• 10245449Oct 4, 2023Electrical system. FAQ: Certain 2023 Model Year bZ4X EV Charging Performance + Display Software Update Frequently Asked Questions
• 10245448Oct 4, 2023Electrical system. DP: A software update has been developed for certain 2023 model year bZ4X vehicles. It is designed to improve DC-charging performance, and enhance visualization of the remaining range, current state of charge (SOC), and real-life energy consumption.
• 10243081Aug 31, 2023Air bags. Ti: technical instructions for 23tc01 toyota safety sense inoperative intermittently
• 10243080Aug 31, 2023Electrical system, Lane departure, Forward collision avoidance. 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 forward recognition camera, there is a possibility that under certain conditions, TSS functions could become inoperative for approximately 4 seconds before rebooting and becoming…
• 10243079Aug 31, 2023Air bags, Lane departure. 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 within the forward recognition camera, there is a possibility that under certain conditions, TSS functions could become inoperative for approximately 4 seconds before rebooting and…
• 10242522Aug 31, 2023Air bags. Ti: technical instructions for 23tc01 toyota safety sense inoperative intermittently
• 10242521Aug 31, 2023Lane departure, Air bags. 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 forward recognition camera, there is a possibility that under certain conditions, TSS functions could become inoperative for approximately 4 seconds before rebooting and becoming…
• 10242520Aug 31, 2023Lane departure, Air bags. 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 within the forward recognition camera, there is a possibility that under certain conditions, TSS functions could become inoperative for approximately 4 seconds before rebooting and…
• 10244115Aug 21, 2023Visibility (wipers, defrost, mirrors). TSB: The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. Follow the procedures outlined in this service bulletin to aid in locating, inspecting, and repairing refrigerant leaks
• 10244113Aug 17, 2023Air bags, Vehicle speed control, Equipment. TSB: Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN plates (the metal plate riveted to dashboard) (see Figure 1) for most 1979 ? 2023 model year vehicles may be available provided the requests meet the criteria listed in this Service Bulletin. Follow the Procurement Procedure in this bulletin to request a replacement certification label or VIN plate.
• 10244111Aug 17, 2023Other or unknown. TT: A very small percentage of customers experience operational difficulties with some telematics features which they cannot resolve on their own. These resources, in conjunction with the Repair Manual, are for dealership personnel to assist those customers with user issues, user errors, and compatibility issues with other vehicle systems and external applications encountered while operating telematics features.
• 10241410Jul 27, 2023Back-over prevention (rear camera). TI: TECHNICAL INSTRUCTIONS FOR Software Update 23TC05 EV Charging Performance + Display Software Update CERTAIN 2023 bZ4X
• 10241409Jul 27, 2023Electrical system. RL: A software update has been developed for certain 2023 model year bZ4X vehicles. It is designed to improve DC-charging performance, and enhance visualization of the remaining range, current state of charge (SOC), and real-life energy consumption.
• 10241408Jul 27, 2023Electrical system. DP: A software update has been developed for certain 2023 model year bZ4X vehicles. It is designed to improve DC-charging performance, and enhance visualization of the remaining range, current state of charge (SOC), and real-life energy consumption.
• 10241404Jul 25, 2023Engine cooling. TSB: Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the…
• 10241387Jul 3, 2023Wheels. TSB: Some 2023 ? 2024 model year Toyota vehicles use hub bolts in place of studs/nuts to fasten the wheels to the vehicle. If non-compatible wheels or hub bolts/nuts are installed, there is increased risk that the wheel(s) could come off resulting in a crash. This service bulletin outlines the physical differences and precautions that should be taken when servicing different wheel and wheel fastener types.
• 10240064Jun 15, 2023Electrical system. TI: TECHNICAL INSTRUCTIONS FOR 23TJ01 Second Key Delivery Program
• 10240063Jun 15, 2023Electrical system. 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 with only one Smart Key and a second mechanical key.
• 10240062Jun 15, 2023Electrical system. 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 second mechanical key.
• 10238126May 1, 2023Equipment. TT: When setting up the Toyota Audio Multimedia (21MM) user profile, if the QR code is not working please use the following recommendations.
• 10236211Apr 24, 2023Engine cooling. TSB: Some 2023 model year bZ4X vehicles may exhibit a condition in which the maintenance reminder messages (Figure 1) do not display on the multi-information display (MID) in the combination meter at scheduled maintenance intervals. The combination meter ECU has been updated to address this condition.
• 10234339Mar 27, 2023Electrical system. TT: MIL On with DTC P2D384B (Hybrid/EV Battery Pack Heater Performance Over Temperature)
• 10234325Mar 15, 2023Steering. 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 indicate when configuration software is required. A new Configure column has been added to the Techstream Health Check Results screen to show when configuration software is…
• 10234310Mar 3, 2023Exterior lighting, Back-over prevention (rear camera). 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 exhibit one or more of the following conditions: ?Head unit rebooting. ?User Profile enhancements. ??Software Update Complete? pop-up message. ?Display screen frozen/non-responsive…
• 10230379Dec 19, 2022Electrical system, Equipment. 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 communication is a reference to the factors that can lead to charging limitations, as explained in the Owner?s Manual (Electric Vehicle System - Section 2.2)
• 10227903Nov 28, 2022Other or unknown. OBSOLETE NOTICE November 28, 2022: This bulletin is now obsolete. Please see T-SB-0105-22
• 10227902Nov 28, 2022Other or unknown. OBSOLETE NOTICE November 28, 2022: This bulletin is now obsolete. Please see T-SB-0104-22.
• 10227901Nov 28, 2022Other or unknown, Wheels. TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. If the wheels are replaced or refinished before vehicle delivery, it is important that the tires remain on the vehicle in the same location and in the same direction of rotation. Refer to the Tire Positioning Procedure in this bulletin to ensure that the original tires stay…
• 10227900Nov 28, 2022Equipment. TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Because of these factors, battery inspection and maintenance are required in order to ensure proper operation and optimal battery life. As a matter of policy, Toyota does not provide battery warranty coverage for…
• 10227926Nov 22, 2022Equipment. TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. The following guidelines should be performed to minimize vehicle component/part degradation due to extended vehicle storage conditions. Long-term storage can affect a vehicle?s systems and components. Any problems that are found should be corrected immediately.
• 10227925Nov 22, 2022Equipment, Air bags. TSB: 2023 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. During Pre-Delivery Service (PDS), follow the appropriate Installation Procedure to attach the driver side, and if applicable, the passenger side and rear seat floor mats to the vehicle…
• 10227924Nov 22, 2022Equipment. DP: Toyota recently became aware that the make of the 2023 bZ4X may be mis-identified as ?Subaru? when the first eight digits of the vehicle?s VIN is decoded using the National Highway Traffic Safety Administration?s (NHTSA) database. We want to assure the customer that their vehicle is a genuine Toyota product, manufactured at Toyota?s Motomachi plant in Japan, and that their VIN is unique to their vehicle.
• 10227917Nov 17, 2022Electrical system, Seat belts, Vehicle speed control. DP: The Car Finder app, which is included with a Toyota One app subscription, operates the headlights to help locate the vehicle in a parking lot. Updated software is available to improve system operation. When the headlamp switch is off, the new software keeps the headlamps on for about 60 seconds unless prior to that you unlock or open the driver?s door or turn the ignition on. This update is available whether or…
• 10228596Nov 3, 2022Equipment, Electrical system. TI: TECHNICAL INSTRUCTIONS FOR LIMITED-SERVICE CAMPAIGN 22TD05 Software Update for ?Car Finder? Feature CERTAIN 2023 Model Year bZ4X
• 10228594Nov 2, 2022Electrical system. TI: TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN 22TC11 SOFTWARE UPDATE ? DC COLD WEATHER CHARGING CERTAIN 2023 MODEL YEAR bZ4X
• 10228593Nov 2, 2022Electrical system. RL: A software update has been developed for certain 2023 model year bZ4X vehicles. Included in the update is an improvement of DC charging performance during low temperatures.
• 10228592Nov 2, 2022Electrical system. DP: A software update has been developed for certain 2023 model year bZ4X vehicles. Included in the update is an improvement of DC fast charging performance during low temperatures.
• 10228590Nov 2, 2022Exterior lighting. RL: The Car Finder app, which is included with a Toyota One app subscription, operates the headlights to help locate the vehicle in a parking lot. Updated software is available to improve system operation. When the headlamp switch is off, the new software keeps the headlamps on for about 60 seconds unless prior to that you unlock or open the driver?s door or turn the ignition on. This update is available whether or…
• 10228589Nov 2, 2022Exterior lighting. DP: The Car Finder app, which is included with a Toyota One app subscription, operates the headlights to help locate the vehicle in a parking lot. Updated software is available to improve system operation. When the headlamp switch is off, the new software keeps the headlamps on for about 60 seconds unless prior to that you unlock or open the driver?s door or turn the ignition on. This update is available whether or…
• 10228585Nov 2, 2022Equipment. TI: TECHNICAL INSTRUCTIONS FORSPECIAL SERVICE CAMPAIGN 22TC09 bZ4X VIN VERIFICATION CERTAIN 2023 MODEL YEAR bZ4X VEHICLES
• 10228584Nov 2, 2022Equipment. RL: Toyota recently became aware that the make of the 2023 bZ4X may be mis-identified as ?Subaru? when the first eight digits of the vehicle?s VIN is decoded using the National Highway Traffic Safety Administration?s (NHTSA) database. We want to assure the customer that their vehicle is a genuine Toyota product, manufactured at Toyota?s Motomachi plant in Japan, and that their VIN is unique to their vehicle.
• 10228583Nov 2, 2022Equipment. DP: Toyota recently became aware that the make of the 2023 bZ4X may be mis-identified as ?Subaru? when the first eight digits of the vehicle?s VIN is decoded using the National Highway Traffic Safety Administration?s (NHTSA) database. We want to assure the customer that their vehicle is a genuine Toyota product, manufactured at Toyota?s Motomachi plant in Japan, and that their VIN is unique to their vehicle.
• 10224589Sep 29, 2022Equipment. TT: ?Some customers may be concerned that HV Battery charging performance does not meet their expectation. ?To extend the life of the HV Battery, some limitations may occur during HV battery charging ?This communication is a reference to the factors that can lead to charging limitations, as explained in the Owner?s Manual (Electric Vehicle System - Section 2.2)
• 10224168Sep 12, 2022Equipment. TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Because of these factors, battery inspection and maintenance are required in order to ensure proper operation and optimal battery life. As a matter of policy, Toyota does not provide battery warranty coverage for…
• 10220209Aug 31, 2022Wheels. TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. If the wheels are replaced or refinished before vehicle delivery, it is important that the tires remain on the vehicle in the same location and in the same direction of rotation. Refer to the Tire Positioning Procedure in this bulletin to ensure that the original tires stay…

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