Toyota Prius Electric Power Assist Steering

The Toyota Prius Gen 2 electric power assist steering or EPAS is a popular way to add steering assist without an internal combustion engine.

A few threads from Gregski: https://openinverter.org/forum/viewtopic.php?p=43205

His implementation starts at this post: https://openinverter.org/forum/viewtopic.php?p=39368#p39368

And then he made his own video(s):

This is a popular modification to do, especially in the hotrodding community. There are articles, and many forum posts, with valuable information if you search online. The following are a small selection:

https://studebaker-info.org/Tech/Esteer/EPASPRIUS/epasprius.html

https://www.motortrend.com/how-to/150-electric-power-steering-junkyard-prius-delivers/

https://www.therangerstation.com/tech/toyota-electric-power-steering-eps-conversion/

Below is the list of cars that are known to have fail-safe electric steering. Only (3) wire connections; Ignition On, Power, and Ground to the Steering ECU.

• 2004-2009 Toyota Prius
• 2009-2013 Toyota Corolla
• 2006-2011 Toyota Yaris – (With ABS)
• 2007-2009 Nissan Versa
• 2009-2012 Nissan Cube
• 2012-2014 Kia Soul

ECU Part Numbers:

• 2004-2009 Toyota Prius 89650-47102
• 2009-2013 Toyota Corolla 89650-02300
• 2006-2011 Toyota Yaris – (With ABS) 89650-52120 / 52050
• 2007-2009 Nissan Versa 28500-EM30A / 991-30303
• 2009-2012 Nissan Cube 28500-1FC0B / JL501-000932
• 2012-2014 Kia Soul B2563-99500 / 4PSG1312 / FPSG1312\