Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2012 Toyota Prius ThreeFACTORY OEM SERVICE PROCEDURE

Steering Column Assembly: Disassembly: Disassembly

NOTE:

When using a vise, do not overtighten it.
Do not drop the power steering motor assembly, strike it with tools or subject it to impacts.
If the power steering motor assembly is subjected to an impact, replace it with a new one.
Do not pull the wire harness of the power steering motor assembly.
Do not allow any moisture to come into contact with the power steering motor assembly.
Do not loosen any bolts not mentioned in the procedure.

REMOVE POWER STEERING MOTOR ASSEMBLY (for Brush Type Motor)
1. Remove the each tape and clamp from the power steering motor assembly and wire harness.
2. Remove the 2 bolts and power steering motor assembly from the electric power steering column sub-assembly.
  
  Fig 1: Identifying Power Steering Motor Bolts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE POWER STEERING MOTOR ASSEMBLY (for Brushless Type Motor)
1. Remove the each tape and clamp from the power steering motor assembly and wire harness.
2. Using a screwdriver, disengage the claw to remove the torque sensor harness connector.
  
  Fig 2: Disengaging Claw To Remove Torque Sensor Harness Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Remove the 2 bolts and power steering motor assembly from the electric power steering column sub-assembly.
  
  Fig 3: Identifying Power Steering Motor Bolts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Remove the electric power steering motor shaft spacer from the electric power steering column sub-assembly.
  
  Fig 4: Identifying Electric Power Steering Motor Shaft Spacer
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Remove the electric power steering motor shaft damper from the electric power steering column sub-assembly.
  
  Fig 5: Identifying Electric Power Steering Motor Shaft Damper
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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