Hyundai Elantra (CN7): Motor Driven Power Steering / Steering Gear Box

Hyundai Elantra (CN7) 2021-2025 Service Manual / Steering System / Motor Driven Power Steering / Steering Gear Box

Repair procedures

Removal
1.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the front wheel and tire (A) from the front hub.
Tightening torque :
107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)
   
•
Be careful not to damage the hub bolts when removing the front wheel and tire (A).

3.
Remove stabilizer bar link from the front strut after loosening the mounting nut.
Tightening torque :
98.1 - 117.7 N.m (10.0 - 12.0 kgf.m, 72.3 - 86.8 lb-ft)
   
•
When loosening the nut fix the outer hexagon of stabilizer bar link.
•
Be careful not to damage the stabilizer link boots.

4.
Remove the tie rod end ball joint by using the special service tool.
(1)
Remove the split pin and castle nut (A).
(2)
Remove the tie rod end ball joint (B) by using the SST (09568-1S100).
Tightening torque :
34.3 - 39.2 N.m (3.5 - 4.5 kgf.m, 25.3 - 28.9 lb-ft)
   
•
Do not resuse castle nut.

5.
Separate the lower arm ball joint by using the SST (09568-1S100) after loosening the lower arm mounting nut (A).
Tightening torque :
68.6 - 80.4 N.m (7.0 - 8.2 kgf.m, 50.6 - 59.3 lb-ft)

   
•
Do not reuse the lower arm ball joint nut (A).
6.
Separate the universal joint from the steering gear box after loosening the universal joint mounting bolt (A).
Tightening torque :
49.0 - 58.8 N.m (5.0 - 6.0 kgf.m, 36.2 - 43.4 lb-ft)

   
•
Lock the steering wheel in the straight ahead position to prevent the damage of the clock spring inner cable.
•
When mounting, securely insert the universal joint into the steering gear box pinion shaft.
•
Do not reuse the universal joint bolt.
•
Assemble so that pinion shaft shark pin can be inserted between the joint slots.
•
Install by aligning the machining surface (A) of the universal joint and the machining surface (B) of the steering gearbox pinion shaft.

7.
Remove the engine room under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
8.
Remove the heat protector (A).
Tightening torque
8.8 - 12.7 N.m (0.9 - 1.3 kgf.m, 6.5 - 9.4 lb-ft)

9.
Remove the muffler rubber hanger (A).

10.
Remove the roll rod bracket (C) after loosening the mounting bolts (A, B).
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)

11.
Remove the fastener (A).
[LH]

[RH]

12.
Remove the sub frame after loosening the mounting bolts and nuts.
Tightening torque :
176.5 - 196.1 N.m (18.0 - 20.0 kgf.m, 130.2 - 144.7 b-ft)
   
•
Set a transmission jack for safety.

13.
Remove the heat protector (A).
Tightening torque :
6.9 - 10.8 N.m (0.7 - 1.1 kgf.m, 5.1 - 8.0 lb-ft)

14.
Remove the steering gear box (A) from the sub frame after loosening the mounting bolts.
Tightening torque :
107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)

Replacement
   
•
Do not disassembly the steering gear box.
•
If disassembly the steering gear box, the quality(Noise / cleanliness / functions) is not guaranteed.

Tie rod end
1.
Remove the tie rod end after loosening the nut.
Tightening torque :
49.0 - 53.9 N.m (5.0 - 5.5 kgf.m, 36.2 - 39.8 lb-ft)

   
•
Before removing the tie rod end, note by measuring the length of the thread or marked with paint.
2.
Replace with new parts.
3.
Check the front alignment.
(Refer to Tires / Wheels - "Alignment")
Installation
1.
To install, reverse the removal procedures.
2.
Check the alignment.
(Refer to Suspension System - "Alignment")

    Repair procedures Replacement1.Turn the steering wheel so that the front wheels are placed in the straight ahead position.    • If the steering wheel and the front tires are not set straight ahead together, it may affect the number of circulation of steering wheel and damage the cable inside the clock spring.

    Repair procedures Removal    • For DTC C125901 / C125929 / C125938 / C129002, refer to "CN7 MDPS DTC Diagnostic Guide".

    Other information:

    Hyundai Elantra (CN7) 2021-2025 Service Manual: Components and positions

    C

    Hyundai Elantra (CN7) 2021-2025 Service Manual: ADAS Parking ECU (ADAS_PRK)

    Components and components location Components and Components Location Repair procedures Removal    • Use a plastic panel removal tool to remove interior trim pieces without marring the surface.• Take care not to bend or scratch the trim and panels.

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