NHTSA ID Number: 10180981
Manufacturer Communication Number: 20-ST-001H-2
TSB/Document Date: 2020-10-08
Summary
This bulletin provides information regarding replacement of the column-mounted Motor Driven Power Steering (MDPS) system as separate components.
GROUP
STEERING
Technical Service Bulletin
SUBJECT:
DATE
SEPTEMBER, 2020
NUMBER
20-ST-001H-2
MODEL(S)
See Below
COLUMN-MOUNTED MDPS REPAIR INFORMATION
THIS TSB SUPERSEDES 20-ST-001H-1 TO REVISE THE CAUSAL PART NUMBER IN THE
WARRANTY INFORMATION TABLE AND UPDATE THE BEARING NOISE EXAMPLE VIDEO.
Description: This bulletin provides information regarding replacement of the column-mounted Motor
Driven Power Steering (MDPS) system as separate components.
Applicable Vehicles: Accent (RB/HC), Azera (HG), Elantra (MD/UD/AD), Elantra Coupe (JK),
Elantra GT (GD/PD), Ioniq Hybrid
/Plug-In/Electric Vehicle (AE HEV/AE PHEV/AE EV),
Kona (OS), Kona EV (OS EV), Palisade (LX2), Santa Fe (TMA), Santa Fe/XL (NC),
Santa Fe Sport (AN), Sonata (YF/LF/DN8a), Sonata Hybrid/Plug-In (YF HEV/ LF HEV/LF PHEV/DN8
HEV), Tucson (LM/TL), Tucson Fuel Cell (LM FCEV), Veloster (FS/JS)
NOTICE
Refer to the applicable model shop manual for the detailed diagnostic and repair
service procedures.
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
SUBJECT:
C-MDPS COMPONENT REPLACEMENT INFORMATION
Parts Information:
Partial Parts of C-MDPS System
7
8
1.
2.
3.
4.
5.
6.
Column & Shaft Assembly (C-MDPS full assembly)
Column & Housing Assembly
C-MDPS Motor
C-MDPS ECU
Universal Joint Assembly
Electric Power Pack (C-MDPS Motor and C-MDPS ECU assembly. Applicable to Palisade (L
X2) and Santa Fe (TMa).
7. Worm Shaft Assembly
8. Steering Universal Joint Pinch Bolts (Upper and Lower)
NOTICE
Refer to the applicable parts catalog for specific application part numbers.
Grease for Mando Systems
Remarks
For Mando C-MDPS vehicles below:
Santa Fe Sport (AN)
Accent (RB/HC)
Tucson (LM/TL)
Tucson Fuel Cell (LM FCEV)
The proper amount of grease is
equivalent to a 50mm bead.
Part Number: YSBB0-91105-FFF
TSB #: 20-ST-001H-2
*Each tube of grease can be used
on approximately 15 vehicles.
Page 2 of 13
SUBJECT:
C-MDPS COMPONENT REPLACEMENT INFORMATION
SUBJECT:
Special Service Tools Information:
Tool Name
Image
SST Number
Chassis Ears
J-39570
NOTICE
Chassis Ears are available for order through Bosch: 1-866-539-4248
TSB #: 20-ST-001H-2
Page 3 of 13
SUBJECT:
SUBJECT:
C-MDPS COMPONENT REPLACEMENT INFORMATION
Warranty Information:
MODEL
OP CODE OPERATION
OP TIME
CAUSAL NATURE CAUSE
PART
CODE
CODE
Accent (RB/HC)
Azera (HG)
Elantra (MD/UD/AD)
Elantra Coupe (JK)
Elantra GT (GD/PD)
Ioniq (AE HEV/PHEV/EV)
Kona (OS/OS EV)
Santa Fe / XL (NC)
C-MDPS
56330R00
Santa Fe Sport (AN)
(EPS) Motor
Sonata (YF/LF)
Sonata Hybrid (YF HEV/LF
HEV/LF PHEV)
Tucson (LM/TL)
Tucson Fuel Cell (LM
FCEV)
Veloster (FS/JS)
Please see
WEB LTS for
current LTS
time
56330*
I11
ZZ3
Accent (RB/HC)
Elantra (MD/UD/AD)
Elantra Coupe (JK)
Elantra GT (GD/PD)
Ioniq (AE HEV/PHEV/EV)
Kona (OS/OS EV)
Santa Fe / XL (NC)
Santa Fe Sport (AN)
56345R00
Sonata (YF/LF)
Sonata Hybrid (YF HEV/LF
HEV/LF PHEV)
Tucson (TL)
Tucson Fuel Cell (LM
FCEV)
Veloster (FS/JS)
C-MDPSECU Assy
Please see
WEB LTS for
current LTS
time
56340*
I11
ZZ3
C-MDPSECU Assy
Please see
WEB LTS for
current LTS
time
56345*
I11
ZZ3
I11
ZZ3
Azera (HG)
Tucson (LM)
56345R00
Palisade (LX2)
Please see
Electronic
Santa Fe (TMa)
WEB LTS for
56370R00 Power Pack
56370*
Sonata (DN8a)
current LTS
Assy
Sonata Hybrid (DN8 HEV)
time
NOTE: Dealers may claim $0.10 on sublet for reimbursement of grease.
* Refer to applicable parts catalog for full causal part numbers.
TSB #: 20-ST-001H-2
Page 4 of 13
SUBJECT:
SUBJECT:
C-MDPS COMPONENT REPLACEMENT INFORMATION
MODEL
OP CODE
OPERATION
OP TIME
CAUSAL NATURE CAUSE
PART
CODE
CODE
Accent (RB/HC)
Steering
Azera (HG)
Column Shaft
56300R0S
56310*
Elantra (MD/UD/AD)
Assembly
Elantra Coupe (JK)
(C-MDPS)
Elantra GT (GD/PD)
Steering
Ioniq (AE HEV/PHEV/EV)
Column &
56390R00
56390*
Kona (OS/OS EV)
Housing Assy
Palisade (LX2)
(C-MDPS)
Please see
Santa Fe (TMa)
WEB LTS for
Santa Fe / XL (NC)
current LTS
Santa Fe Sport (AN)
time
Sonata (YF/LF/DN8a)
Joint And/Or
Sonata Hybrid (YF
Coupling
HEV/LF HEV/LF
56400R00
56400*
AssyPHEV/DN8 HEV)
Universal
Tucson (LM/TL)
Tucson Fuel Cell (LM
FCEV)
Veloster (FS/JS)
Elantra (AD/ADa)
Please see applicable
Elantra GT (PD)
Please see
“C-MDPS Worm Shaft
Ioniq (AE HEV/PHEV/EV) applicable “CBearing Noise” TSB
Kona (OS/OS EV)
MDPS Worm MDPS Worm
20-ST-002H-2 or
Palisade (LX2)
Shaft Bearing
Shaft
20-ST-003H-1 for Op
Santa Fe / XL (NC)
Noise” TSB
Assembly
Time and applicable
Sonata (LF/DN8a)
20-ST-002H-2 Replacement
Worm Shaft Assy part to
Sonata Hybrid (LF HEV/LF
Or
be used for the causal
PHEV/DN8 HEV)
20-ST-003H-1
part number
Veloster (FS/JS)
NOTE: Dealers may claim $0.10 on sublet for reimbursement of grease.
* Refer to applicable parts catalog for full causal part numbers.
TSB #: 20-ST-001H-2
I11
ZZ3
Q57
ZZ7
Page 5 of 13
SUBJECT:
SUBJECT:
C-MDPS COMPONENT REPLACEMENT INFORMATION
Service Procedure:
NOTICE
C-MDPS Repair Flowchart is meant to be used as reference guide only. See C-MDPS
DTC table for more details.
It is recommended to replace the column & housing assembly,
o In cases of no DTC(s) with symptoms of binding/sticking steering feel.
o Noise diagnosed to be coming from column & housing assembly.
However, if the noise is diagnosed to be coming from the worm shaft
bearing, refer to the applicable “C-MDPS Worm Shaft Bearing Noise” TSB
20-ST-002H-2 or 20-ST-003H-1
If the pinch bolts on either ends of the steering universal joint assembly are removed,
the bolts cannot be reused during reassembly.
Refer to the shop manual for other common C-MDPS noise repairs.
If a C-MDPS component is replaced, but the concern is not resolved, please contact the
Hyundai Technical Assistance Hotline at 1-800-325-6604 for further assistance.
Note that some DTCs may be found in systems other than EPS (electric power steering)
in GDS. They may be found in the Brake/ABS/ESC system. Check all systems for
DTCs.
Always refer to the applicable model shop manual for detailed information regarding
DTC diagnosis and component replacement procedures.
TSB #: 20-ST-001H-2
Page 6 of 13
SUBJECT:
SUBJECT:
C-MDPS COMPONENT REPLACEMENT INFORMATION
C-MDPS Repair Flowchart
Vehicle in dealer for C-MDPSrelated concern.
Noise – See C-MDPS Noise Repair
Information in this TSB.
Warning Lamp Illuminated – DTC(s)
present / CAN Line Error
No DTC(s), Sticking /
Binding – Replace column
& housing assy.
Scraping/growling noise when
turning steering wheel
https://youtu.be/22PI3hAEfnk
– Refer to the appropriate
“C-MDPS Worm Shaft Bearing
Noise” TSB 20-ST-002H-2 or
20-ST-003H-1
1. Check C-MDPS connectors and
wiring.
2. Erase DTC(s) and re-check.
3. If DTC(s) still present, follow these
recommended repairs.
ECU-Related
C1112
C1604
C1623
C1687
C1688
C1704
C1705
C2412
C2413
Replace the
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TSB/Document ID: 20-ST-001H-2
Replacement Service Bulletin Number:
MFR Communication Date: 2020-09-09
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
MFR Component Subsystem:
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