GROUP

NUMBER

STEERING
DATE

Technical Service Bulletin
SUBJECT:

18-ST-003
MODEL(S)

AUGUST, 2018

Sonata (YF, LF)
Sonata Hybrid (YF
HEV, LF HEV)
Santa Fe (NC)
Azera (HG)

STEERING RACK SUPPORT YOKE NOISE

Description: On some Sonata (YF, LF), Sonata Hybrid (YF HEV, LF HEV), Santa Fe (NC), and
Azera (HG) vehicles, a yoke noise may develop in the steering rack. This bulletin provides
information on how to diagnose the yoke noise and replace the rack support yoke assembly.

Applicable Vehicles:
• 2011 to 2018 model year Sonata (YF and LF)
• 2011 to 2018 model year Sonata Hybrid (YF HEV and LF HEV)
• 2012 to 2017 model year Azera (HG)
• 2013 to 2018 model year Santa Fe (NC)

Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

SUBJECT:

YF & YF HEV/LF & LF HEV/NC/HG STEERING RACK SUPPORT YOKE NOISE

Part Information:
Part Name

Model(s)

Part Number

YOKE KIT

All applicable vehicles for this
TSB

565702W000FFF

Sonata (YF and LF), Sonata
Hybrid (YF HEV and LF
HEV), and Azera (HG)

56415-2H000

Santa Fe (NC)

56415-1M000

UNIVERSAL
JOINT BOLT

Photo

Tool Information:

Name

Photo

Part Number

Yoke Lock Nut Tool

57718-2W009FFF

Warranty Information:
Model

Op. Code

Santa Fe (NC)

56570F02

2.0 M/H

Sonata (YF) &
Sonata Hybrid
(YF HEV)

56570F03

1.7 M/H

Sonata (LF) &
Sonata Hybrid
(LF HEV)

56570F03

Azera (HG)

56570F04

Operation

YOKE
REPLACEMENT

Op. Time

Causal Part*

Nature

Cause

56500*

Q55

ZZ5

1.7 M/H

1.8 M/H

*Refer to applicable parts catalog for full causal part numbers
TSB #: 18-ST-003

Page 2 of 8
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SUBJECT:

YF & YF HEV/LF & LF HEV/NC/HG STEERING RACK SUPPORT YOKE NOISE

Service Procedure:

NOTE
If a rattle type noise is heard when driving and turning the steering wheel that is coming from the
steering rack yoke support area, use the following service procedures to replace the rack
support yoke assembly.

1.

Secure the steering wheel in the straight
ahead position to prevent damage to the
clock spring.

NOTE
Do NOT allow the steering wheel to spin
freely to prevent damage to the clock spring.
Use a steering wheel holding device such as
the one used during alignment adjustments
to prevent the steering wheel from turning
during this service procedure.

2.

Remove the steering gear box assembly
from the vehicle. Refer to the applicable
shop manual service procedures.

TSB #: 18-ST-003

Page 3 of 8
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SUBJECT:

!

YF & YF HEV/LF & LF HEV/NC/HG STEERING RACK SUPPORT YOKE NOISE

CAUTION

Must use a new universal joint bolt (A),
P/N 56415-2H000, during reassembly.
A

3.

Secure the steering rack in a vice with the
yoke plug facing up.

C

Remove any foreign substance or adhesive
around the rack housing (B) and yoke plug
(C) of the removed gear box.
B

NOTE
Protect the steering rack from damage when
securing in the vice.

4.

Remove the lock nut using the yoke lock
nut tool (D) and discard the nut.

D

TSB #: 18-ST-003

Page 4 of 8
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5.

YF & YF HEV/LF & LF HEV/NC/HG STEERING RACK SUPPORT YOKE NOISE

Loosen and remove the yoke plug (E) and
discard.

E

6.

Remove the yoke spring (F). Do not discard
the yoke spring. The spring will be reused
during reassembly.

F

7.

Clean the threads and interior of the yoke
plug housing with a clean rag and isopropyl
alcohol.

NOTE
Only use the isopropyl alcohol to clean the
threads and yoke plug housing.
Threads should not be contaminated with
grease.

8.

Remove the support yoke (G) and discard.

G

TSB #: 18-ST-003

Page 5 of 8
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9.

YF & YF HEV/LF & LF HEV/NC/HG STEERING RACK SUPPORT YOKE NOISE

Clean out the remaining debris with an air
gun.

!

CAUTION

Wear protective goggles when
performing this step.

10.

Check that the new support yoke o-rings
are properly seated.
Apply 3g of grease (1 full tube) on the
center of the yoke liner. Be sure the grease
does not push out onto the housing threads
when installing the support yoke.
Apply a thin layer of grease on the outer
diameter (O-rings) of the support yoke.
Apply a thin layer of grease where the yoke
spring sits in the support yoke.

11.

Install the new support yoke.

NOTE
Ensure that the curve (H) of the support yoke
is aligned as shown in the photo to the right.

TSB #: 18-ST-003

H

Page 6 of 8
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SUBJECT:

YF & YF HEV/LF & LF HEV/NC/HG STEERING RACK SUPPORT YOKE NOISE

12.

Reinstall the yoke spring.

13.

Hand tighten the new yoke plug.

14.

Tighten the yoke plug to the torque
specification.
Tightening torque:
50 N.m (5.0 kgf.m, 36.8 lb-ft)

NOTE
Torque to spec within 1 minute after
hand tightening the yoke plug.

TSB #: 18-ST-003

Page 7 of 8
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15.

YF & YF HEV/LF & LF HEV/NC/HG STEERING RACK SUPPORT YOKE NOISE

Create one mark on the housing (I), which
is aligned with the pre-existing mark on the
yoke plug (J), as shown.

16.

Rotate the yoke plug counter-clockwise until
the blue yoke plug mark is aligned with the
steering rack housing mark created in step
15.

17.

Hand tighten the lock nut until it contacts
the surface of the rack housing.

18.

While holding the yoke plug with a socket,
tighten the lock nut using a torque wrench.

J

I

Tightening torque:
55 N.m (5.6 kgf.m, 40.5 lb-ft)

19.

Reinstall all removed parts in reverse order
of removal.

20.

Perform a front toe wheel alignment.

TSB #: 18-ST-003

Page 8 of 8
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