22-ST-006H

GROUP
NUMBER
STEERING
DATE
Technical Service Bulletin
April 2022
22-ST-006H
MODEL(S)
Tucson (NX4A)
MDPS ANTI-SHIMMY LOGIC UPDATE
SUBJECT:
Description: Certain 2022MY Tucson (NX4A) vehicles may exhibit a steering wheel shimmy at
highway speeds not related to tire balance nor radial force variation (RFV). This bulletin describes the
procedure to update the anti-shimmy logic in the Motor Driven Power Steering (MDPS) ECU.
Applicable Vehicles:
• Certain 2022MY Tucson (NX4A, VINs starting with '5NM') vehicles produced from February 3,
2021 to December 6, 2021.
GDS Information:
System Selection: MDPS
Event #
Description
814
NX4A STEERING WHEEL VIBRATION IMPROVEMENT W/O BRAKING
Warranty Information:
MODEL
OP CODE
OPERATION
OP TIME
CAUSAL
PART
NATURE
CODE
CAUSE
CODE
Tucson
(NX4A)
56300F29
MDPS UPGRADE
0.3 M/H
56370-N9000
I3T
ZZ3
NOTE: Normal Warranty Applies
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.
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
MDPS ANTI-SHIMMY LOGIC UPDATE
SUBJECT:
!
WARNING
GDS-M Vehicle Battery Low Voltage Warning:
When the vehicle battery is lower than 12 volts, the GDS-M will trigger a Low Battery Voltage
Warning. If this Warning occurs,
A. Connect the battery to a fully charged battery jump pack or GR8 charger using “Power
Supply Mode” to continue the software update.
OR
B. Select “BACK” to exit the SW update. Then, start the engine and idle with the headlights
on for 20 minutes. Return to the SW update after charging the battery.
Service Procedure:
1. Perform GDS software update:
•
Refer to TSB 15-GI-001 for the detailed tablet-based Mobile 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
PART NUMBER
NX4A
MDPS
56370-N9000
ROM ID
OLD
NEW
56370-N9000 1.00 1.02
56300-N9100 1.00 1.00
56370-N9000 1.00 1.03
Manual Mode Password:
MENU
NX4A MDPS 56370-N9000
PASSWORD
9100
TSB #: 22-ST-006H
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SUBJECT: