NHTSA ID Number: 10186821
Manufacturer Communication Number: 21-01-005H
TSB/Document Date: 2021-02-06
Summary
This bulletin describes the procedure to update the MDPS (Motor Driven Power Steering) ECU for loss of steering assist when the engine is started. DTCs C125901, “Steering Angle Sensor Fail†and C111201, “Sensor Supply Voltage Error†are set when this occurs.
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TSB/Document ID: 21-01-005H
Replacement Service Bulletin Number:
MFR Communication Date: 2021-01-21
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: STEERING
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
GROUP
NUMBER
Campaign
DATE
Technical Service Bulletin
21-01-005H
MODEL(S)
JANUARY 2021
Accent (HC)
MDPS ECU UPDATE FOR DTC C125901 AND C111201
(SERVICE CAMPAIGN T5U)
SUBJECT:
IMPORTANT
*** Dealer Stock and Retail Vehicles ***
Dealers must perform this Service Campaign on all affected vehicles prior to customer retail delivery
and whenever an affected vehicle is in the shop for any maintenance or repair.
When a vehicle arrives at the Service Department, access Hyundai
Motor America's "Warranty
Vehicle Information (VIS)" screen via WEBDCS to identify open Campaigns.
Description: This bulletin describes the procedure to update the MDPS (Motor Driven Power Steering)
ECU for loss of steering assist when the engine is started. DTCs C125901, “Steering Angle Sensor
Fail” and C111201, “Sensor Supply Voltage Error” are set when this occurs.
Applicable Vehicles:
Certain 2021MY Accent (HC) vehicles produced from September 29, 2020 to November 11,
2020.
GDS Information:
System Selection: EPS
Event #
Description
652
HC - C125901, C111201 DTC IMPROVEMENT(MDPS)
Warranty Information:
MODEL
OP CODE
OPERATION
Accent (HC) 200M16A0 MDPS UPGRADE
OP TIME
CAUSAL
PART
NATURE
CODE
CAUSE
CODE
0.3 M/H
56340-H9000
I3A
ZZ3
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
MDPS ECU UPDATE FOR DTC C125901 AND C111201
SUBJECT:
NOTICE
You must initially perform the GDS ECU Update in Auto Mode.
If the ECU Update starts but then fails in Auto Mode, perform the update in Manual Mode to
recover.
!
WARNING
GDS Vehicle Battery Voltage Warning:
If voltage is below 12 volts as per the below GDS warning, then select Back and run the
vehicle for at least 20 minutes to ensure an adequate battery state of charge for reliable
update results. Turn ignition back on, and then retry the ECU update again.
Service Procedure:
1. Perform GDS software update:
Refer to TSB 15-GI-001 for the detailed tablet-based Mobile GDS ECU update
procedures.
Refer to TSB 15-GI-002 for the detailed PC-based GDS ECU update procedures.
2. Check for Diagnostic Trouble Codes in the ALL menus and erase any DTC.
3. Confirm normal vehicle operation.
ROM ID Table:
MODEL
SYSTEM
MDPS P/N
Accent (HC)
MDPS
56340-H9000
Manual Mode Password:
MENU
HC MDPS 56340-H9000
ROM ID
OLD
NEW
1.05
1.06
PASSWORD
9000
TSB #: 21-01-005H
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