steering

Power Steering Reservoir

for 2017 Ford F-150 3.5L V6 EcoBoost · RWD

Editorial review:Chris Hackleman — Master Technician · 20+ years · Jeff Moore — Master Lexus & Toyota Mechanic · 20+ years

Difficulty

Expert

Time

36 min

Tools

Steps

✓Expert-verified. Personally reviewed and approved by OLP's master technicians (Chris Hackleman & Jeff Moore — 20+ years each). Always follow the vehicle's factory service information and torque specs.

This procedure addresses a non-existent component. The 2015-2020 Ford F-150 3.5L EcoBoost uses Electric Power Assisted Steering (EPAS) which has no hydraulic reservoir or fluid.

Warnings

⚠The 2015-2020 Ford F-150 with 3.5L EcoBoost uses Electric Power Assisted Steering (EPAS). There is no power steering reservoir, pump, or hydraulic fluid in this system.

ℹ️If you are experiencing power steering issues, the problem is likely with the electric motor, torque sensor, or electronic control module, not a reservoir.

Tools required

Diagnostic scan toolEssential

Preparation

Verify vehicle specification - confirm the vehicle is equipped with EPAS by checking for absence of hydraulic lines at the steering rack
If power steering concerns exist, connect diagnostic scan tool to check for steering system fault codes

Procedure

1
Confirm Electric Power Steering Configuration
Open the hood and locate the steering rack on the frame rail. Verify that only electrical connectors are present, with no hydraulic hoses or reservoir. The EPAS system uses an electric motor mounted directly to the steering rack with no external fluid supply.
2
Identify Misdiagnosis Source
If attempting this repair due to power steering concerns, the issue requires electrical diagnosis. Common EPAS faults include steering motor failure, torque sensor malfunction, or wiring issues. Use a factory-level diagnostic tool to retrieve fault codes from the Power Steering Control Module (PSCM).
3
Alternative Diagnosis Path
If a reservoir-like component was observed, verify it is not the brake master cylinder reservoir or windshield washer reservoir, which are both located in the engine bay and could be confused for a power steering reservoir by unfamiliar technicians.

Reassembly

No disassembly was required as this component does not exist on this vehicle configuration

Verification

Confirm vehicle has EPAS by checking the driver information center for steering-related messages
If steering concerns exist, verify proper diagnostic codes have been retrieved before proceeding with electrical repairs

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