ADS Software Error May Cause Crash

Affected vehicles (2)

Component / system

Defect

Zoox, Inc. (Zoox) is recalling certain Automated Driving Systems (ADS) equipped with software versions released prior to April 17, 2025. In certain driving scenarios, the Zoox vehicle may make an inaccurate prediction when another vehicle slowly approaches perpendicularly and stops. In these scenarios, the Zoox vehicle may not be able to avoid a crash.

Risk / consequence

Inaccurately predicting the movement of another vehicle increases the risk of a crash.

Remedy

Zoox has updated the ADS software, free of charge. All affected driverless fleet vehicles operating on public roads were repaired by April 17, 2025. Zoox's number for this recall is 25-02.

Chronology of events

1. Apr 8, 2025

   On April 8, 2025, in Las Vegas, NV, an unoccupied Zoox robotaxi operating in autonomy was involved in a collision with a passenger car. There were no injuries. Zoox paused all driverless vehicle operations across all geofences to conduct an internal review.

2. Apr 10, 2025

   On April 10, 2025, Zoox confirmed, with simulation and analysis, that this condition would occur only at speeds over 40mph. Based on this analysis, driverless vehicle operations were unpaused in geofences with maximum speeds below 40 mph, but excluded Las Vegas routes above 40 mph.

3. Apr 11, 2025

   On April 11, 2025, after further analysis, Zoox confirmed the root cause, implemented a software update, and began testing it both in simulation and on drivered, retrofitted test vehicles.

4. Apr 13, 2025

   On April 13, 2025, Zoox reported the incident to NHTSA in accordance with the Standing General Order (SGO Report #30610-10473-1).

5. Apr 15, 2025

   On April 15, 2025 Zoox verified the software update through the safety clearance process.

6. On April 16 and 17, 2025, updated software was released to all impacted Zoox vehicles operating on public roads. Following confirmation of the deployment of the updated software, operations resumed in all geofences. The Zoox Safety Committee met on April 17 and 23, 2025 and after final analysis and review of all the facts, made a determination to voluntarily and proactively submit this Part 573 notification for the previously remedied software.

Notification schedule

Dealer notification

NR - NR

Owner notification

NR - NR