The problem, however, isn't with anything electronic or mechanical. Instead, it's the unsecured or incompatible floor mat issue, which can entrap the accelerator pedal and cause the vehicle to accelerate. If it seems strange to you that something so simple could be such a big problem, you're not alone.
Owners of affected vehicles will receive notification from Toyota early in August. A fix for the problem will be carried out at Lexus dealers at "no cost to the customers." No cost, that is, aside from the lost time at the dealership.
For a complete history of Toyota's unintended acceleration issues, including NHTSA reports on the causes (or non-causes) and Toyota's multi-layered response, visit our unintended acceleration archive.
For owners of an affected Lexus RX, more information can be found at the Lexus recall site, or by calling the Lexus Customer Satisfaction line at 1-800-255-3987.