“I’ve never lost power before,” Anderson said, adding that the experience left her shook up. “I just thought, ‘Please, God, let me out of here.’ I was lucky I wasn’t on the freeway.”

-February 7, 2018, LA Times article by Ralph Vartabedian

  • In addition to the warning lights and buzzers, reduction of power, and reduction of speed associated with limp home (aka fail safe) mode, over 80% of post-E0E inverter failures result in the loss of ABS (anti-lock Brakes), BA (Brake Assist), VSC (Vehicle Stability Control), and TRAC (Traction Control).
  • In the ZE3 Warranty Enhancement FAQs (link), Toyota refers to Fail-Safe mode as “Limp-Home Mode”.
  • In its ZE3 documentation, Toyota states fail safe (aka Limp Home Mode), “is a form of vehicle self-protection” that may “reduce vehicle power to minimize potential component damage.” They continue the description saying, “…you will notice a reduction in power and speed.
  • In NHTSA’s E0E Recall Acknowledgement (link) sent by Jennifer Timian to Abbas Saadat on February 13, 2014, NHTSA states as the Problem Description of an inverter failure as, “various warning lamps will be illuminated on the instrument panel and the vehicle will have reduced power allowing it to only drive a short distance.
  • On February 6, 2018 Toyota’s Tom Trisdale, Vice-President, Product Quality and Service Support, sent correspondence (link) to Toyota dealers stating, “…the safety recall remedy addresses the safety defect. It is designed to ensure that the vehicle will enter a fail-safe driving mode in the unlikely event of an intelligent power module failure.” Here is how (link to SOFaddress) Toyota used the word “addresses” during Unintended Acceleration.

“It is an extreme safety hazard,” he said. “It is intended to limit damage to the inverter.”

-Attorney Skip Miller, February 7, 2018, LA Times article by Ralph Vartabedian

  • Limp-Home Mode (aka Fail-Safe Mode) is described by Toyota in their Frequently Asked Questions (link) section of the E0E safety recall documentation. Toyota states, “All of the following warning lights and messages will be illuminated on the instrument panel when the vehicle enters fail-safe driving mode (aka limp-home mode). The fail-safe driving mode will result in reduced power under which the vehicle can still be driven for short distances.” Toyota continues stating, “The distance a vehicle will continue to travel in fail-safe driving mode will vary based upon the hybrid batter state of charge and the road conditions.” If your Prius has a low battery it will may experience a shut down.
  • Toyota’s Defect Information Report, in the July 2012 – June 2013 section, states “The fail-safe mode allows the vehicle to be safely operated at reduced speeds.” Therefore, if you are driving at an accelerated speed when your vehicle enters fail-safe mode, your Prius can not be operated safely. Do you drive your Prius on the freeway? In the fast lane? On fast moving highways?