This procedure addresses service for the 2016-2024 Hyundai Tucson 2.5L I4 AWD, which uses an Electric Power Steering (EPS) system that requires no fluid service or maintenance.

Warnings

Tools required

Preparation

1. Verify vehicle is equipped with Electric Power Steering by confirming absence of power steering fluid reservoir in engine bay
2. Park vehicle on level ground and engage parking brake
3. Turn ignition to OFF position

Procedure

1. 1

   Confirm Electric Power Steering System
   Open hood and visually inspect the engine bay. Confirm there is no power steering fluid reservoir, no hydraulic pump driven by serpentine belt, and no high-pressure hydraulic lines running to the steering rack. The EPS motor is integrated into the steering column or rack assembly and is entirely electric.
2. 2

   Inspect EPS System Components
   Check the condition of the EPS wiring harness for damage, chafing, or corrosion at connectors. Inspect the steering column area for proper mounting and absence of unusual noise or binding when turning the steering wheel lock to lock with vehicle stationary and engine running.
3. 3

   Check for Diagnostic Trouble Codes
   Connect Hyundai GDS diagnostic scanner or equivalent OBD-II scan tool. Check for any stored or pending EPS-related fault codes in the MDPS (Motor Driven Power Steering) module. Record any codes found for further diagnosis if steering complaints exist.
4. 4

   Verify EPS Warning Lamp Operation
   Turn ignition to ON position without starting engine. Verify the EPS warning lamp (steering wheel icon) illuminates briefly during bulb check and then extinguishes. If lamp remains illuminated, diagnose using factory procedures as this indicates an EPS system fault.
5. 5

   Test EPS Assist Function
   Start the engine and allow it to idle. Turn the steering wheel slowly from lock to lock while stationary. EPS assist should provide smooth, consistent power assistance without jerking, hesitation, or unusual noises. Note any abnormalities for further diagnosis.

Reassembly

1. No disassembly required for this verification procedure

Verification

• Confirm no EPS warning lamp is illuminated on instrument cluster
• Verify smooth and consistent power steering assist during test drive with various steering inputs
• Ensure no diagnostic trouble codes are present in MDPS module
• Educate vehicle owner that no periodic fluid service is required for the electric power steering system

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