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GROUP
STEERING
Technical Service Bulletin
SUBJECT:
DATE
NUMBER
22-ST-005H-1
MODEL(S)
JUNE 2022
Multiple
C-MDPS WORM SHAFT BEARING NOISE
THIS TSB SUPERSEDES 22-ST-005H TO INCLUDE INFORMATION REGARDING A NEW
BEARING KIT, A NEW TOOL, AND APPLICABLE MODELS.
Description: Certain vehicles may develop a bearing noise within the Motor Driven Power Steering
(MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to
replace the worm shaft bearing.
“626” Bearing Kit
56359-L1AAAFFF
“608” Bearing Kit
56358-AAAAAFFF
Applicable Vehicles:
2017 – 2020 MY Elantra (AD, VIN beginning with “KMH”)
2017 – 2018 or 2020 MY Elantra (ADA, VIN beginning with “5NP”) with production dates between
January 01, 2017 and February 28, 2018 or between November 07, 2019 and May 03, 2020
2021 – 2022 MY Elantra (CN7/CN7A)
2021 – 2022 MY Elantra (CN7 HEV)
2018 – 2020 MY Elantra GT (PD)
2017 – 2022 MY Ioniq Hybrid/Plug-In (AE HEV/PHEV)
2017 – 2021 MY Ioniq Electric Vehicle (AE EV)
2018 – 2022 MY Kona (OS)
2019 – 2022 MY Kona EV (OS EV)
2020 – 2022 MY Palisade (LX2)
2017 – 2019 MY Santa Fe/XL (NC)
2017 – 2019 MY Sonata (LFA)
2017 – 2019 MY Sonata Hybrid/Plug-In (LF HEV/PHEV)
2020 – 2022 MY Sonata (DN8, VIN beginning with “KMH”)
2020 – 2021 MY Sonata Hybrid (DN8 HEV)
2017 MY Veloster (FS)
NOTICE
•
•
2018 – 2020 MY Elantra (ADA, VIN beginning with “5NP”), with production dates between
March 01, 2018 and November 06, 2019, please refer to TSB 22-ST-004H.
2020 – 2022 MY Sonata (DN8A) produced from SOP to December 30, 2021, please refer to
TSB 22-ST-003H.
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
SUBJECT:
C-MDPS WORM SHAFT BEARING NOISE
Parts Information:
MODEL
ELANTRA (AD/ADA)
ELANTRA GT (PD)
KONA (OS)
KONA EV (OS EV)
IONIQ (AE EV)
IONIQ HEV/PHEV
(AE HEV/PHEV)
SANTA FE/XL (NC)
VELOSTER (FS)
SONATA (LFA)
SONATA HEV/PHEV
(LF HEV/PHEV)
PALISADE (LX2)
PART NAME
PART NUMBER
PHOTO / DESCRIPTION
1
2
3
“626”
BEARING KIT
4
56359-L1AAAFFF
1.
2.
3.
4.
SONATA HEV
(DN8 HEV)
Jan 29, 2020 to Oct 23,
2020
End cover assy
Sliding damper
626 Bearing, OD: 19mm
Paper stick
2
1
ELANTRA (CN7/CN7A)
ELANTRA HEV
(CN7 HEV)
SONATA (DN8)
SONATA HEV
(DN8 HEV)
Oct 23, 2020 to Jun 30,
2021
3
“608”
BEARING KIT
56358-AAAAAFFF
4
1. End cover assy
2. Sliding damper
3. 608 Bearing, OD: 22mm
4. Paper stick
NOTE1: Part 1 is only required for vehicles equipped with a plastic end cover.
NOTE2: The 608 bearing is larger than the 626 bearing.
NOTE3: Sonata HEV (DN8 HEV) part application is split by production date. If the DN8 HEV’s vehicle
production date is October 23, 2020, verify the required bearing kit by measuring the bearing within
the MDPS housing.
NOTICE
The included parts are specific to each kit. Do not mix parts. Using the incorrect parts may
damage the parts and/or MDPS housing.
TSB #: 22-ST-005H-1
Page 2 of 14
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C-MDPS WORM SHAFT BEARING NOISE
SUBJECT:
SST Information:
PART NAME
PART NUMBER
PHOTO
DESCRIPTION
Use for both 626 and
608 bearings.
MDPS
SMALL
BEARING
REMOVAL
TOOL
“626”
MDPS
SMALL
BEARING
MOUNTING
TOOL
All dealers were sent
one of each tool at
the launch of the
original TSB in
October 2021.
0K563-L2100FFF
For 626 bearing only.
All dealers were sent
one of each tool at
the launch of the
original TSB in
October 2021.
0K563-L2200FFF
“608”
MDPS
SMALL
BEARING
MOUNTING
TOOL
For 608 bearing only.
All dealers were sent
this tool at the launch
of this TSB, 22-ST005H-1, in Junef
2022.
09563-IB200
NOTICE
Ensure the correct bearing mount tool is used. Using the incorrect tool can damage the
bearing and/or MDPS housing.
TSB #: 22-ST-005H-1
Page 3 of 14
SUBJECT:
SUBJECT:
C-MDPS WORM SHAFT BEARING NOISE
Warranty Information:
MODEL
OP CODE
ELANTRA (AD/ADA)
ELANTRA GT (PD)
KONA (OS)
KONA EV (OS EV)
IONIQ (AE EV)
IONIQ HEV/PHEV
(AE HEV/PHEV)
SANTA FE/XL (NC)
VELOSTER (FS)
SONATA (LFA)
SONATA HEV/PHEV
(LF HEV/PHEV)
PALISADE (LX2)
SONATA HEV
(DN8 HEV)
Production Date Range:
Jan 29, 2020 to Oct 23,
2020
OPERATION
OP
TIME
CAUSAL
PART
NATURE CAUSE
CODE
CODE
56359L1AAAFFF
(“626” kit)
56352F00
SMALL
BEARING
REPLACEMENT
ELANTRA (CN7/CN7A)
ELANTRA HEV (CN7 HEV)
SONATA (DN8)
0.6
M/H
Q57
ZZ6
56358AAAAAFFF
SONATA HEV
(DN8 HEV)
Production Date Range:
Oct 23, 2020 to Jun 30,
2021
(“608” kit)
NOTE1: Sonata HEV (DN8 HEV) causal part number is split by vehicle production date. If the DN8
HEV’s vehicle production date is October 23, 2020, use the applicable causal part.
NOTE2: Normal Warranty Applies
TSB #: 22-ST-005H-1
Page 4 of 14
SUBJECT:
C-MDPS WORM SHAFT BEARING NOISE
SUBJECT:
Service Procedure:
Procedures are the same for both bearing kits.
1.
2.
Determine if bearing noise comes from the
MDPS column and housing.
•
Start the engine and turn the steering
wheel left and right.
•
Listen for the bearing noise occurring
from the worm shaft housing (A). This
noise will be located near the CMDPS motor on the steering column.
•
To hear an example of the bearing
noise, refer to the link or QR code
below.
https://youtu.be/22PI3hAEfnk
MDPS Motor
A
Replace the worm shaft small bearing if
noise is heard.
If noise is not heard in this location, refer to
the shop manual for detailed diagnostic and
repair service procedures or refer to the
most current Column-Mounted MDPS Repair
Information TSB for additional information.
3.
Ensure the wheels are straight and the
steering wheel is level.
TSB #: 22-ST-005H-1
Page 5 of 14
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C-MDPS WORM SHAFT BEARING NOISE
SUBJECT:
4.
Removal of the MDPS assembly is not
required to replace the small bearing located
in the MDPS steering column and housing.
Remove the crash pad lower panel following
the procedures in the applicable shop
manual.
Crash Pad Lower Panel
Body (Interior and Exterior) > Crash Panel >
Crash Pad Lower Panel
Knee Air Bag
Check if vehicle is equipped with a Knew Air
Bag
If repairing a vehicle without a Knee Air
Bag, go to step 7.
If repairing a vehicle equipped with a Knee
Air Bag, continue to step 5.
5.
Equipped with Knee Air Bag
Record the customer’s AM, FM, and SXM
radio preset stations.
Disconnect the negative (-) battery terminal.
NOTICE
Wait at least 3 minutes before
proceeding to ensure voltage is bled
off.
!
Battery Terminal Tightening Torque
lb-in • 69.6-86.4
lb-ft • 5.8-7.2
!
CAUTION
Not removing the negative (-) terminal
from the battery may result in accidental
airbag deployment and possible
physical injury.
kgf.m • 0.1-1.0
N.m • 7.8-9.8
TSB #: 22-ST-005H-1
Page 6 of 14
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C-MDPS WORM SHAFT BEARING NOISE
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6.
Carefully remove the driver's knee airbag
following the procedures in the applicable
shop manual.
Restraint > Airbag Module > Knee Airbag
(KAB) Module
!
!
CAUTION
The airbag may accidently be deployed
and possibly cause physical injury.
After removing the knee airbag
module, position airbag with the cover
facing upward.
7.
Additional parts may have to be removed to
gain access to the small bearing. Follow the
applicable shop manual for part removal
procedures.
TSB #: 22-ST-005H-1
Page 7 of 14
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C-MDPS WORM SHAFT BEARING NOISE
SUBJECT:
8a.
Vehicles with Plug
Remove the plug (B).
Reuse the plug during reassembly.
Plug Tightening Torque
B
lb-ft • 28.2-35.5
kgf.m • 3.9-4.9
N.m • 38.3-48.1
8b.
Vehicles with Plastic Cover
Remove the plastic cover (C) by breaking
the six cover tabs with pliers.
C
TSB #: 22-ST-005H-1
Page 8 of 14
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C-MDPS WORM SHAFT BEARING NOISE
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9.
Remove the anti-rattle plug (D).
Anti-Rattle Plug Tightening Torque
lb-in • 86.4-112.8
lb-ft • 7.2-9.4
D
kgr.m • 1.0-1.3
N.m • 9.8-12.8
10.
Remove the anti-rattle spring (E).
NOTICE
Keep the anti-rattle spring free of
debris after removal. Reuse the spring
during reassembly.
11.
E
Remove the slide pin (F).
NOTICE
Keep the slide pin free of debris after
removal. Reuse the slide pin during
reassembly.
TSB #: 22-ST-005H-1
F
Page 9 of 14
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SUBJECT:
12.
C-MDPS WORM SHAFT BEARING NOISE
Remove the sliding damper (G) and discard.
G
13.
Use the MDPS small bearing removal tool,
to remove and discard the bearing.
How to use the tool
1. Insert the ends (a) of the tool into the
MDPS housing to grasp the outer
race of the bearing.
2. Slowly turn the threaded rod (b) until
the tip (c) reaches the center of the
bearing and worm shaft.
3. Continue to turn the rod slowly until
the bearing is pulled off the worm
shaft.
b
b
c
a
TSB #: 22-ST-005H-1
Page 10 of 14
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C-MDPS WORM SHAFT BEARING NOISE
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14.
Use the supplied paper stick to remove the
excess grease.
15.
Remove the bolt (H) from the MDPS small
bearing mounting tool. This bolt will be used
to locate the tool on the MDPS housing.
H
NOTICE
Ensure the correct bearing mount tool
is used. Using the incorrect tool can
damage the bearing and/or MDPS
housing.
NOTICE
After completing the bearing
installation procedure, thread the bolt
back into its original position.
16.
Insert the new bearing into the bearing
holder.
NOTICE
Ensure the correct bearing is used for
the vehicle. The 608 bearing is larger
than the 626 bearing.
626
OD: 19mm
608
OD: 22mm
TSB #: 22-ST-005H-1
Page 11 of 14
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C-MDPS WORM SHAFT BEARING NOISE
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17.
18.
Place the tool onto the MDPS housing as
shown in the photo in the right. Slide the bolt
(H) through the hole and then thread the bolt
into the anti-rattle plug boss (I). Tighten the
bolt (H) until the tool is firmly held onto the
MDPS housing.
H
I
Use a torque wrench to slowly seat the
bearing into position on the worm shaft.
Bearing Seating Torque
lb-in • 26.52
lb-ft • 2.21
kgf.m • 0.31
N.m • 3.0
NOTICE
Note the small torque values to seat
the bearing.
Only use hand tools. Electric tools may
damage the bearing during assembly.
TSB #: 22-ST-005H-1
Page 12 of 14
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C-MDPS WORM SHAFT BEARING NOISE
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19.
Remove the tool from the MDPS housing
and inspect the bearing.
Ensure the bearing is fully seated and the
end of the worm shaft is protruding
approximately 1.2mm (0.047 inch).
If the bearing did not seat as shown in the
photo, increase the torque setting on the
torque wrench and continue to slowly seat
the bearing.
Increased Bearing Seating Torque
lb-in • 44.28
OK
Bearing is seated
properly. The end
of the worm shaft is
protruding.
Not OK
Bearing is not
seated properly.
The end of the
worm shaft is flush
with the bearing.
lb-ft • 3.69
kgf.m • 0.51
N.m • 5.0
NOTICE
If the bearing is removed during this
procedure, do not reinstall the bearing
as it might be damaged and cause a
noise. A new bearing must be used.
TSB #: 22-ST-005H-1
Page 13 of 14
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C-MDPS WORM SHAFT BEARING NOISE
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20.
Install the new sliding damper. Align the hole
on the side of the sliding damper (J) with the
anti-rattle plug boss (I).
I
NOTICE
J
Ensure the correct sliding damper is
used. Color may vary by kit.
Align this side with
the hole with the
plug boss.
21.
Not this side.
Install the plastic end cover (L). Ensure
cover snaps into place and is flush with the
housing.
L
NOTICE
Ensure the correct end cover is used.
Color may vary by kit.
22.
Reinstall parts in the reverse order of
removal.
23.
If necessary, reconnect the negative battery
cable after all the components have been
reinstalled to the vehicle. Program the
customer’s AM, FM, and SXM radio preset
stations.
24.
The service procedure is now complete.
TSB #: 22-ST-005H-1
Page 14 of 14
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