Research checked 2026-10-24. Individual vehicle eligibility must be confirmed with the manufacturer or regulator.
The official action and its boundaries
On 2026-06-26, the responsible Australia record documented campaign REC-006639 involving bZ4X. Its published coverage is 2025-26 listed year range (Australia registry year range). This is a dated summary of a specific official safety action, not a new mechanical diagnosis or a claim about the whole global nameplate.
The notice qualifies applicability as follows: Certain XEAM11/XEAM15 2WD and AWD bZ4X, 1,101 units; not presumed same as older 006428 cars. Australian vehicle recall notices identify a local campaign and often provide a VIN-list download. Those lists and authorised importer records control eligibility; the word “all variants” inside a listing does not turn an Australian population into a worldwide one.
The identified safety concern
The regulator or manufacturer describes this concern: HV battery ECU software issue may disable electric drive; power steering/braking assistance described as remaining available. It is an identified possibility within a defined campaign, not a prediction that an owner’s vehicle will fail. The population count, where supplied, means potentially involved vehicles, not that every vehicle in the list actually experienced the hazard or that a specified percentage failed.
The later bZ4X campaign identifies different model codes and a different fault domain from the Australian defrost notice. Toyota’s regulator filing says a loss of motive power can occur while steering and assisted braking remain functional. That nuance must be communicated without suggesting a driver should continue operating an impaired car.
Remedy recorded in the official notice
The source’s documented corrective approach is: Dealer updates HV battery ECU software. This is the notice/remedy evidence available in the source reviewed on 2026-10-24; it does not establish that work has been completed on any particular vehicle.
Safety campaign documents may be amended, expanded or replaced. Confirm the current instructions and open/closed status with the official brand network using the vehicle identity. Do not carry out unapproved repairs or deliberately recreate the alleged fault to see whether the car qualifies.
What an owner or used-car buyer should do
Owners should arrange the official update and follow immediate warning guidance from Toyota. A pre-owned 2025 vehicle could warrant checks for both Australian campaigns if equipment and VIN indicate that possibility; there is no automatic overlap assumption.
Retain the country, campaign ID REC-006639, original notice date and dated repair confirmation in the vehicle history. If you experience hazardous steering, braking, sudden propulsion loss, smoke, fire or loss of visibility, follow the vehicle maker’s emergency instructions and obtain professional assistance. Related entry: Separate from AU REC-006428.