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Service bulletins for the 2023 Toyota bZ4X

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.

162 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Driver assistance are shown. Show all

Bulletins, newest first
25TC032025-08-08. Service bulletin. FORWARD COLLISION AVOIDANCE: WARNINGS. TECHNICAL INSTRUCTIONS FOR 25TC03 REPROGRAMMING FOR FORWARD RECOGNITION CAMERA CERTAIN 2023 COROLLA CROSS 2023 COROLLA CROSS HV 2023 Bz4x
25TC032025-06-06. Service bulletin. FORWARD COLLISION AVOIDANCE: WARNINGS. TECHNICAL INSTRUCTIONS FOR 25TC03 REPROGRAMMING FOR FORWARD RECOGNITION CAMERA CERTAIN 2023 COROLLA CROSS 2023 COROLLA CROSS HV 2023 BZ4X
25TC032025-06-06. Service campaign. FORWARD COLLISION AVOIDANCE: WARNINGS. Frequently Asked Questions SPECIAL SERVICE CAMPAIGN 25TC03 Certain 2023 Model Year Corolla Cross Certain 2023 Model Year Corolla Cross HV Certain 2023 Model Year bZ4x Certain 2021-2023 Model Year Sienna HV TSS 3.0 Forward Recognition Camera Software Update
25TC032025-06-06. Service campaign. FORWARD COLLISION AVOIDANCE: WARNINGS. Included vehicles are equipped with Toyota Safety Sense (TSS) 3.0, which includes the Pre-Collision System (PCS), which uses the forward recognition camera. In rare cases, a software programming issue can damage the forward recognition camera. This will result in the Pre-Collision System not working the next time the car is started.
25TC032025-06-06. Service bulletin. FORWARD COLLISION AVOIDANCE: WARNINGS. TECHNICAL INSTRUCTIONS FOR 25TC03 REPROGRAMMING FOR FORWARD RECOGNITION CAMERA CERTAIN 2023 COROLLA CROSS 2023 COROLLA CROSS HV 2023 BZ4X
25TC032025-06-06. Service campaign. FORWARD COLLISION AVOIDANCE: WARNINGS. Frequently Asked Questions SPECIAL SERVICE CAMPAIGN 25TC03 Certain 2023 Model Year Corolla Cross Certain 2023 Model Year Corolla Cross HV Certain 2023 Model Year bZ4x Certain 2021-2023 Model Year Sienna HV TSS 3.0 Forward Recognition Camera Software Update
25TC032025-06-06. Service campaign. FORWARD COLLISION AVOIDANCE: WARNINGS. Included vehicles are equipped with Toyota Safety Sense (TSS) 3.0, which includes the Pre-Collision System (PCS), which uses the forward recognition camera. In rare cases, a software programming issue can damage the forward recognition camera. This will result in the Pre-Collision System not working the next time the car is started.
25TC032025-05-15. Service bulletin. FORWARD COLLISION AVOIDANCE: WARNINGS. TECHNICAL INSTRUCTIONS FOR 25TC03 REPROGRAMMING FOR FORWARD RECOGNITION CAMERA CERTAIN 2023 COROLLA CROSS 2023 COROLLA CROSS HV 2023 BZ4X
25TC032025-05-15. Service campaign. FORWARD COLLISION AVOIDANCE: WARNINGS. Frequently Asked Questions SPECIAL SERVICE CAMPAIGN 25TC03 Certain 2023 Model Year Corolla Cross Certain 2023 Model Year Corolla Cross HV Certain 2023 Model Year bZ4x Certain 2021-2023 Model Year Sienna HV TSS 3.0 Forward Recognition Camera Software Update
25TC032025-05-15. Service campaign. FORWARD COLLISION AVOIDANCE: WARNINGS. Included vehicles are equipped with Toyota Safety Sense (TSS) 3.0, which includes the Pre-Collision System (PCS), which uses the forward recognition camera. In rare cases, a software programming issue can damage the forward recognition camera. This will result in the Pre-Collision System not working the next time the car is started.
25TC032025-05-15. Service bulletin. FORWARD COLLISION AVOIDANCE: WARNINGS. TECHNICAL INSTRUCTIONS FOR 25TC03 REPROGRAMMING FOR FORWARD RECOGNITION CAMERA CERTAIN 2023 COROLLA CROSS 2023 COROLLA CROSS HV 2023 BZ4X
25TC032025-05-15. Service campaign. FORWARD COLLISION AVOIDANCE: WARNINGS. Frequently Asked Questions SPECIAL SERVICE CAMPAIGN 25TC03 Certain 2023 Model Year Corolla Cross Certain 2023 Model Year Corolla Cross HV Certain 2023 Model Year bZ4x Certain 2021-2023 Model Year Sienna HV TSS 3.0 Forward Recognition Camera Software Update
25TC032025-05-15. Service campaign. FORWARD COLLISION AVOIDANCE: WARNINGS. Included vehicles are equipped with Toyota Safety Sense (TSS) 3.0, which includes the Pre-Collision System (PCS), which uses the forward recognition camera. In rare cases, a software programming issue can damage the forward recognition camera. This will result in the Pre-Collision System not working the next time the car is started.
23TC01a2023-10-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; FORWARD COLLISION AVOIDANCE; LANE DEPARTURE. 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 operational again.
23TC012023-10-02. Service bulletin. LANE 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 becoming operational again.
23TC01 Region Le2023-09-18. Service bulletin. LANE 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 operational again.
23TC01 Dealer Pa2023-09-18. Service bulletin. LANE 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 becoming operational again.
23TC05B2023-08-28. Service bulletin. BACK OVER PREVENTION:SOFTWARE. TI: TECHNICAL INSTRUCTIONS FOR Software Update 23TC05 EV Charging Performance + Display Software Update CERTAIN 2023 bZ4X
T-SB-0012-232023-04-17. Service bulletin. BACK OVER PREVENTION; EXTERIOR LIGHTING. 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. ?Navigation items show on non-navigation multimedia system (Mexico market only). ?Newly added phone contact name will not show on display screen. ?Noise during hands-free calls. ?GPS location indicator stays on after map is off. ?Map does not display. ?Route guidance guides to incorrect side. ?App button(s) appear pressed. ?Sonar system display will not update on display screen. ?Back-up camera messages are in English instead of non-English. ?Incorrect HD radio icon color. ?Bluetooth profile version update. A software update is now available to address these conditions. Follow the Software Update Procedure in this bulletin to update the software.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.