NEW YORK — At higher speeds, warning lights come on, and then the plug-in hybrid system in Toyota’s newest RAV4 either drops into a limited fail-safe mode or shuts down entirely, taking drive power with it. Toyota has told federal regulators that every one of the 30,978 2026 RAV4 Plug-in Hybrids in its latest recall carries the software behind that behavior.
The National Highway Traffic Safety Administration lists the campaign as 26V659. Toyota filed its report on Oct. 7, and the document is blunt about the stakes: a shutdown means “a loss of motive power while the vehicle is being driven at a higher speed, increasing the risk of a crash.”
The fault sits in a motor generator control unit, an inverter assembly made by Denso, which may not finish its motor initialization correctly. When that happens, the control mode used at higher speeds is simply unavailable. How Toyota found the problem makes the recall harder to read. The filing says the first signal came between June and August from a field report in Japan, where a vehicle could be driven only on its front wheels at limited speed. The shutdown scenario came later, from Toyota’s own mid-August testing with that control mode removed from the front motors, which run the same program.
Toyota’s recall filing says dealers will update the software at no cost, with owner letters going out in phases between Nov. 22 and Dec. 6. It lists no interim notification to owners before then.
Toyota puts the share of affected vehicles at 100 percent, yet the filing says the initialization error happens only “in some cases,” so not every SUV will behave the same way. As of Sept. 30, Toyota counted 38 field technical reports and 58 warranty claims from U.S. sources that “relate or may relate” to the condition, a tally it calls its “best engineering judgment.” The filing does not say whether any involved a crash or an injury.
It is not the first plug-in RAV4 recalled for shutting down at speed. In February 2023, Toyota recalled about 16,680 2021 RAV4 Prime models over hybrid control software, also from Denso, that could shut the system down if the accelerator was pressed hard after cold-weather driving in EV mode, according to Toyota’s dealer notice. Different part, different trigger, same outcome.
Software is again the remedy. In August, Toyota’s Camry Hybrid recall covered 508,354 sedans over a startup error that could blank the instrument display and disable turn signals.
What the filing leaves open is why the initialization fails, which the posted report does not explain, and whether any U.S. report describes a sudden shutdown at speed rather than the limp mode seen in Japan. Toyota owners are not due their letters until Nov. 22 at the earliest.
