Electric Power Steering Hyundai Santa Fe III

Description

EPS (Electronic power steering, Column assist type) system uses an electric motor to assist the steering force and it is an engine operation independent steering system.

EPS control module controls the motor operation according to information received from the each sensor and CAN (Controller Area Network), resulting in a more precise and timely control of steering assist than conventional engine-driven hydraulic systems. Components (Steering Angle Sensor, Torque Sensor, Fail-safe relay, etc.) of the EPS system are located inside the steering column. EPS unit assembly, steering column, and EPS unit assembly must not be disassembled for inspection. They must be replaced if necessary.

NOTE WITH REGARD TO DIAGNOSIS

1. Do not impact the electronic parts, if they are dropped or impacted, replace them with new ones.
2. Avoid heat and moisture to the electronic parts.
3. Do not contact the connect terminal to avoid deformation and static electricity.
4. Do not impact the motor and torque sensor parts, if they are dropped or impacted, replace them with new ones.
5. The connector should be disconnected or connected with IG OFF.

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General Inspection

After or before servicing the EPS system, perform the troubleshooting and test procedure as follows. Compare the system condition with normal condition in the table below and if abnormal symptom is detected, perform necessary remedy and inspection.

Caution when ASP (Absolute Steering Position) calibration or EPS type recognition

1. Check if the battery is fully charged before ASP calibration or EPS type recognition.
2. Be careful not to disconnect any cables connected to the vehicle or scan tool during ASP calibration or EPS type recognition.
3. When the ASP calibration or EPS type recognition is completed, turn the ignition switch off and wait for several seconds, then start the engine to confirm normal operation of the vehicle.

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1. Select "Steering Angle Sensor".
2. Proceed with the test according to the screen introductions.

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1. Select "EPS Variant Coding".
2. Proceed with the test according to the screen introductions.

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1. Disconnect the battery negative cable from the battery and then wait for at least 30 seconds.
2. Turn the steering wheel so that the front wheels can face straight ahead.
3. Remove the airbag module. Refer to «DRIVER AIRBAG (DAB) MODULE AND CLOCK SPRING»(/hyundai/santa-fe/iii-2012-2016/remont/airbag/#airbag-modules-clock-spring) .
4. Disconnect the connector & lock nut (A) and then remove the steering wheel by using special service tools (09561-11001). Tightening torque: 44.1 ~ 49.0 N.m (4.5 ~ 5.0 kgf.m, 32.5 ~ 36.2 lb-ft) NOTE: Do not hammer on the steering wheel to remove it; it may damage the steering column.
5. Remove the steering column shroud. Refer to «DRIVER AIRBAG (DAB) MODULE AND CLOCK SPRING»(/hyundai/santa-fe/iii-2012-2016/remont/airbag/#airbag-modules-clock-spring) .
6. Remove the clock spring. Refer to «DRIVER AIRBAG (DAB) MODULE AND CLOCK SPRING»(/hyundai/santa-fe/iii-2012-2016/remont/airbag/#airbag-modules-clock-spring) .
7. Remove the multifunction switch. Refer to «REMOVAL»(/hyundai/santa-fe/iii-2012-2016/remont/steering-column-switches/#multifunction-switch) .
8. Remove the crash pad lower panel. Refer to «CRASH PAD LOWER PANEL»(/hyundai/santa-fe/iii-2012-2016/remont/gauges-instrument-panels/#crash-pad) .
9. Loosen the bolt (A) and then disconnect the universal joint assembly from the pinion of the steering gear box. Tightening torque: 32.4 ~ 37.3 N.m (3.3 ~ 3.8 kgf.m, 23.9 ~ 27.5 lb-ft) NOTE: Universal joint for gear box pinion shaft certainly is signed by the insertion.
10. Disconnect all connectors (A) connected to the steering column.
11. Remove the steering column (C) by loosening the mounting bolt (B-1ea) and nut (A-2ea). Tightening torque: (A) 2.7 ~ 17.7 N.m (1.3 ~ 1.8 kgf.m, 9.4 ~ 13.0 lb-ft) (B) 44.1~ 49.0 N.m (4.5 ~ 5.0 kgf.m, 32.5 ~36.2 lb-ft)
12. Install in the reverse order of removal.

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1. Loosen the bolt (A) and then disconnect the universal joint assembly from the steering column assembly. Tightening torque: 49.0 ~ 58.8 N.m (5.0 ~ 6.0 kgf.m, 36.2 ~ 43.4 lb-ft)
2. Reassembly is the reverse of the disassembly.

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1. Make a groove on the head of special bolts (A) by a punch.
2. Loosen the special bolt using a screw driver and then remove the key lock assembly from the steering column assembly.
3. Reassembly is the reverse of the disassembly.

Inspection

1. Check the steering column for damage and deformation.
2. Check the joint bearing for damage and wear.
3. Check the tilt bracket for damage and cracks.
4. Check the key lock assembly for proper operation and replace it if necessary.

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1. Remove the front wheel and tire (A) from front hub. Tightening torque: 88.2 ~ 107.8 N.m (9.0 ~ 11.0 kgf.m, 65.0 ~ 79.5 lb-ft) NOTE: Be careful not to damage to the hub bolts when removing the front wheel and tire (A).
2. Disconnect the stabilizer link (B) with the front strut assembly (A) after loosening the nut. Tightening torque: 98.1 ~ 117.7 N.m (10.0 ~ 12.0 kgf.m, 72.3 ~ 86.8 lb-ft)
3. Remove the sprit pin and castle nut and then disconnect the tie-rod end (A) from the front knuckle. Tightening torque: 23.5 ~ 33.3 N.m (2.4 ~ 3.4 kgf.m, 17.4 ~ 24.6 lb-ft)
4. Loosen the bolt & nut and then remove the lower arm (A). Tightening torque: 98.1 ~ 117.7 N.m (10.0 ~ 12.0 kgf.m, 72.3 ~ 86.8 lb-ft)
5. Loosen the bolt (A) and then disconnect the universal joint assembly from the pinion of the steering gear box. Tightening torque: 32.4 ~ 37.3 N.m (3.3 ~ 3.8 kgf.m, 23.9 ~ 27.5 lb-ft) NOTE: Keep the neutral-range to prevent the damage of the clock spring inner cable when you handle the steering wheel. Do not use the bolt again.
6. Remove the under cover. Refer to «ENGINE ROOM UNDER COVER»(/hyundai/santa-fe/iii-2012-2016/remont/mechanical/#engine-and-transmission-assembly) .
7. Loosen the bolt (A, B) and then remove the upper roll rod bracket. Tightening torque: (A) 107.9 ~ 127.5 N.m (11.0 ~ 13.0 kgf.m, 79.6 ~ 94.0 lb-ft) (B) 49.0 ~ 63.7 N.m (5.0 ~ 6.5 kgf.m, 36.2 ~ 47.0 lb-ft) NOTE: Bolt (A) is the bolt only special bolts are not reusable.
8. Remove the roll rod stopper bolt (A). Tightening torque: 107.9 ~ 127.5 N.m (11.0 ~ 13.0 kgf.m, 79.6 ~ 94.0 lb-ft)
9. Disconnect the muffler rubber hanger (A).
10. Loosen the bolts & nuts and then remove the sub frame. Tightening torque: Bolts: (A) 44.1 ~ 58.8 N.m (4.5 ~ 6.0 kgf.m, 32.5 ~ 43.4 lb-ft) (B) 156.9 ~ 176.5 N.m (16.0 ~ 18.0 kgf.m, 115.7 ~ 130.2 lb-ft) Nuts: (C) 44.1 ~ 58.8 N.m (4.5 ~ 6.0 kgf.m, 32.5 ~ 43.4 lb-ft) (D) 156.9 ~ 176.5 N.m (16.0 ~ 18.0 kgf.m, 115.7 ~ 130.2 lb-ft)
11. Loosen the bolt (A-4ea) and then remove the stabilizer bar (B) from the sub frame. Tightening torque: 49.0 ~ 63.7 N.m (5.0 ~ 6.5 kgf.m, 36.2 ~ 47.0 lb-ft)
12. Loosen the bolt and then remove the protector (A). Tightening torque: 6.9 ~ 10.8 N.m (0.7 ~ 1.1 kgf.m, 5.1 ~ 8.0 lb-ft)
13. Remove the steering gearbox (B) from the cross member by loosening the mounting bolt (A-4ea). Tightening torque: 88.2 ~ 107.8 N.m (9.0 ~ 11.0 kgf.m, 65.0 ~ 79.5 lb-ft)
14. Installation is the reverse of removal.
15. Check the front alignment. Refer to «FRONT ALIGNMENT»(/hyundai/santa-fe/iii-2012-2016/remont/suspension-front/#front-suspension-system-wheel-alignment) .

See also:
• DRIVER AIRBAG (DAB) MODULE AND CLOCK SPRING
• REMOVAL
• CRASH PAD LOWER PANEL
• ENGINE ROOM UNDER COVER
• FRONT ALIGNMENT