2026 Toyota Bz

The 2026 Toyota BZ XLE PLUS generated some vibration and noise during the driving and it caused the eardrum pressure and discomfort for a short trip of drive like 15-minutes drive. It caused sharp ear pain after a long trip of drive like one-hour drive. The pain would last few hours after the long-trip drive. The same driver drove a different EV car but had no issue at all. Tried to use the earbuds with noise cancellation but it couldn’t stop the ear from hurting during a long trip of drive with 2026 Toyota BZ. Complaint to Toyota dealer about the vibration and noise after purchase the car, some of the sales stated that two of his customers experienced the ear pressure of driving Toyota BZ. They usually have to open the window slightly to release the ear pressure. But not enough details to know how did they feel during a long trip of drive.

NHTSA ID

11774812

Incident

Sep 16, 2026

The contact owns a 2026 Toyota BZ. The contact stated that while driving, the battery started overheating and the vehicle experienced a slight loss of automotive power. The messages "EV System Overheated - Output Power Reduced" and "Plug in Charging System Malfunction - Visit your Dealer” were displayed. The vehicle was taken to a dealer where it was diagnosed, and the contact was informed that the failure was not duplicated. The manufacturer was notified of the failure. The failure mileage was 5,000.

NHTSA ID

11772535

Incident

Nov 2, 2025

Mileage

5,000 mi

When I was driving the car when forward and suddleny heard a pop and I got a shocked and my car went a complete broke down I think EV broke down it almost caused me to get in accident and almost get killed

NHTSA ID

11771952

Incident

Oct 7, 2026

I was involved in an Accident on 9-19-26 as my car hit the car in front of me . I applied brakes however my car did not stop and the collision warning did not activate and the emergency braking system failed . Now my car is totaled and I’m left paying Toyota the difference ! CAR IS DEFECTIVE Approximately 3000 miles

NHTSA ID

11770569

Incident

Sep 19, 2026

The contact owns a 2026 Toyota BZ. The contact stated that while driving approximately 75 MPH and attempting to overtake a tractor trailer logging truck, the Forward Collision Avoidance Automatic Emergency Braking activated causing the vehicle abruptly decelerate. The failure was immediately self-corrected and the vehicle operated normally. During the failure the emergency braking warning light was illuminated. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure. The failure mileage was 12,000.

NHTSA ID

11769643

Incident

Sep 29, 2026

Mileage

12,000 mi

The contact owns a 2026 Toyota BZ. The contact stated that the air conditioning system was inoperable while starting the vehicle. The contact stated that while the air conditioning system was activated, the vents failed to blow air immediately. The failure was a recurring failure. The contact was affected by the loss of cool air in humid temperatures and was suffocating from the heat. The dealer was contacted and made aware of the failure. The failure mileage was approximately 1,000.

NHTSA ID

11768615

Incident

Sep 20, 2026

Mileage

1,000 mi

SUPPLEMENT TO ODI COMPLAINT 11758090 (filed 8/19/2026). Two corrections, an identified component, and a verified manufacturer remedy. Full narrative attached. CORRECTIONS. (1) The prior 12V battery was replaced 5/29/2026, not June 2026; invoice 569207 is correct. (2) The complaint attributed the drain to an armed charging schedule. That was a proxy, not the cause. The trigger is ANY vehicle wake -- key-fob approach at ~8 ft, end of drive, or converter pulse -- which arms a timer of exactly 180 minutes, after which a 0.87-0.9 A sawtooth discharge runs 4.6-9 hours, consuming up to 12 Ah. Verified 8 of 8 events 8/8-8/23/2026 by amp-hour shunt and independent voltage logger, one pre-registered in advance and correct to the minute. The defect is not avoidable by any owner setting. REMEDY. 8/24/2026, Cavender Toyota, repair order 604263, under Toyota Technical Assistance System case TA262360433: ignition off; vehicle removed from owner's Toyota app garage; ignition on 1 min (pending telematics upload completes); off 1 min; on; vehicle re-added to app garage. No parts, no charge, ~10 minutes. The procedure operates only on the DCM/connected-services registration state, which identifies the component. VERIFICATION. Two deliberate fob wakes 8/24 (19:25, 23:10 CDT): no discharge at 180 minutes or overnight. Twelve days of normal use through 9/5/2026: zero events. TOYOTA'S OWN RECORDS CORROBORATE. The TAS advisory tells the technician to "set up for 3 hours to monitor," matching the measured 180-minute latency. Invoice 593644 records the 12V battery needing 2.5 hours of external charging. The TAS case records "Dealer Visit: 4," escalation reason "Multiple Repair." The dealer's 8-day monitoring (7/28-8/5) found nothing because a vehicle parked in a service lot is never woken: 1 mile accrued in 8 days. No recall or TSB communicates this remedy; case TA262360433 remains open, "Vehicle Repaired" blank. Full instrumented record available to ODI on request.

NHTSA ID

11762359

Incident

May 16, 2026

The 12-volt auxiliary battery system repeatedly discharges itself and has twice left the vehicle completely inoperative: 7/24/2026 (5.58 V at the battery, parked unplugged ~46 hours after the last drive) and 7/28/2026 (5.95 V, failure during an attempt to enter READY to drive). The 12V system controls the contactors connecting the high-voltage traction battery to the drive system; when it collapses the vehicle cannot be started or driven even though the traction pack holds charge. The dealer replaced the 12V battery under warranty in June 2026; failures continued, so the battery was not the cause. I instrumented the 12V system with two independent cross-validated meters (precision current/amp-hour shunt; voltage logger sampling every 2 minutes) and measured the mechanism over 12 continuous days (Aug 8-19, 2026). Findings: (1) A drain event begins exactly 3 hours (180 min, within one 2-minute sample, in all six measured events) after the most recent vehicle wake - a READY cycle or the key fob merely coming within detection range of the parked car. Each new wake restarts the 3-hour countdown. (2) The event draws ~0.87 A; four completed events ran 4.6-4.7 hours (~4 Ah each), one ran 9.2 hours (~8 Ah). (3) Events occur with all charging schedules verified off in both vehicle and phone app, the app closed, and the vehicle unplugged. (4) The vehicle never replenishes the 12V from the traction pack while parked, and undercharges it when driven (13.9 V ceiling, single 30-minute window). Ordinary daily use - driving, parking unplugged, or walking near the car with the fob - drains the battery to collapse within days. No owner setting prevents it. A 6-day dealer observation did not reproduce it because the vehicle sat undisturbed: no wake, no drain. No warning lamps preceded either failure. Instrumented logs attached; vehicle and data available for inspection on request.

NHTSA ID

11758090

Incident

Jul 28, 2026

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 Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash reprogramming process.

State of Health (SOH): An estimate of battery health that is updated as the vehicle learns from operating and charging conditions over time. Distance Since Last Update: Indicates the distance accumulated since the last SOH calculation. A default mileage value of 40,727 at SOH 100% may be displayed until sufficient vehicle learning is completed. Once SOH value updates from 100%, the Distance Since Last Update value will re-set to 0 miles. Both SOH and Distance Since Last Update values will continue to update as the vehicle continues to learn.

Some 2026 model year bZ, bZ Woodland, and C-HR BEV vehicles may exhibit the Diagnostic Trouble Code (DTC) U255221F associated with the level 3 DC fast charging. Under certain conditions, charging may either operate normally or experience failure, with a charging malfunction message displayed on the Multi-Information Display (MID). This condition is attributed to a control logic issue and potential voltage drop affecting Plug-In Charge Control Computer Assembly functionality. The control logic has been modified to reduce the possibility of this condition.

2026 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 seatfloor mats to the vehicle carpet using the floor mat retainers.

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.

Long-term or off-site storage requires special care to maintain vehicle condition. The following guidelines should be performed to minimize vehicle component/part degradation due to extendedvehicle storage conditions. Long-term storage can affect a vehicle’s systems and components. Any problems that are found should be corrected immediately.