Power Steering Fluid Flush

This procedure cannot be performed as written because the 2021-2024 Ford F-150 with 3.5L EcoBoost uses Electric Power Assisted Steering (EPAS) which contains no hydraulic fluid to flush.

Warnings

Preparation

1. Verify vehicle configuration and confirm presence or absence of power steering fluid reservoir
2. Consult owner's manual or under-hood label to confirm Electric Power Assisted Steering (EPAS) system

Procedure

1. 1

   Verify EPAS Configuration
   Open the hood and confirm there is no power steering fluid reservoir present. The 3.5L EcoBoost F-150 in this model year range uses an electric motor mounted on the steering column or rack to provide assist, eliminating the need for hydraulic fluid, pump, lines, and reservoir.
2. 2

   Identify EPAS Components
   Locate the electric power steering motor assembly on the steering system. This is typically mounted on the steering rack. Unlike hydraulic systems, there are no fluid lines connected to the rack assembly.
3. 3

   Confirm No Service Required
   EPAS systems are sealed units that require no periodic fluid service. If you are experiencing power steering issues, diagnose electrical connections, steering angle sensor calibration, or motor assembly faults rather than fluid-related problems.

Reassembly

1. No disassembly or reassembly required for this procedure

Verification

• Confirm vehicle has Electric Power Assisted Steering by absence of reservoir and hydraulic lines
• If power steering concerns exist, perform electrical system diagnostics rather than fluid service

Related trouble codes on this vehicle

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