Recall Date: 6/9/2026
NHTSA ID: 26V393
MFr. Campaign Number: See attached Part 573 (filed individually by Toyota, Subaru, and Lexus)
Manufacturer: Toyota Motor Engineering & Manufacturing (Toyota, Subaru, and Lexus)
Affected Components: Battery ECU software
Potential Number of Units Affected: 20,991
This recall covers three electric vehicles built on a shared platform: the 2026 Subaru Solterra (4,757 vehicles), the 2026 Toyota bZ (11,495 vehicles), and the 2026 Lexus RZ (4,739 vehicles), for a total of 20,991 vehicles. All three share the same battery ECU and the same software defect, filed by Toyota Motor Engineering & Manufacturing on behalf of all three brands.
The battery ECU contains two integrated circuits that can end up writing to the same memory address at the same time. When that happens repeatedly, the memory fails an operational check, which triggers an EV System Malfunction warning and multiple indicator lights. Power steering and power-assisted braking keep working, but the electric drive system shuts down, which can cause a loss of motive power while driving at higher speeds.
The warning is hard to miss: an EV System Malfunction message paired with multiple illuminated indicators. Drivers who see that combination should get the vehicle to a dealer rather than continuing to drive on the highway.
Toyota, Subaru, and Lexus have not issued a Do Not Drive or Park Outside advisory for this campaign. The fix is a straightforward dealer software update to the battery ECU, free of charge at any Toyota, Lexus, or Subaru dealer.
Dealer notification began June 18, 2026, with remedy owner letters going out in phases between August 3 and August 17, 2026. As of the recall decision, Toyota's review found a single US warranty claim tied to the condition and no field technical reports.
Toyota first spotted unusual diagnostic data during development testing of an unrelated plug-in hybrid model back in August 2025, and initially concluded the same failure mode wouldn't occur on the BEV models already in the field because of a difference in how the second IC's write cycle behaved. That assessment held until April 2026, when a routine review of remote diagnostic data from vehicles already on the road turned up the exact malfunction Toyota had ruled out months earlier.
Bench testing traced the trigger to CPU load, meaning the failure becomes more likely under conditions like a low state of charge, when the memory check cycle runs longer and increases the odds of the two ICs colliding. Toyota made the recall decision on June 12, 2026. Because the Solterra, bZ, and RZ share the same underlying battery architecture, this is one of the clearer examples of a defect that crosses brand lines entirely inside a single joint-venture platform.
A 21,000-vehicle recall split across three brands and three dealer networks is easy to under-prioritize, but a loss of motive power at highway speed is a serious safety condition regardless of population size.
BizzyCar Recall Outreach works the same way across Toyota, Lexus, and Subaru databases, identifying affected Solterra, bZ, and RZ owners and reaching them through two-way SMS so the software update gets scheduled quickly instead of getting lost in a small-volume campaign.
Ready to see how BizzyCar can automate recall response at your dealership? Book a demo.