NHTSA ID Number: 10178170
Manufacturer Communication Number: 20-FL-007H
TSB/Document Date: 2020-08-07
Summary
This bulletin provides information related to an ECM (Engine Control Module) software update for DTC P0128: Coolant Thermostat (Coolant Temp below Thermostat Regulating Temperature) logic revision. There are no drivability symptoms associated with DTC P0128.
GROUP
NUMBER
FUEL SYSTEM
Technical Service Bulletin
DATE
20-FL-007H
MODEL(S)
JULY, 2020
ELANTRA (AD)
ECM SOFTWARE UPDATE – DTC P0128
SUBJECT:
Description:
This bulletin provides information related to an ECM (Engine Control Module) software update for
DTC P0128: Coolant Thermostat (Coolant Temp below Thermostat Regulating Temperature) logic
revision.
There are no drivability symptoms associated with DTC P0128.
Applicable Vehicle: Certain 2019 & 2020MY Elantra (AD) equipped with 1.6L Turbo engine
Warranty Information:
Model
Elantra (AD)
Op. Code
39118F12
Operation
ECM UPGRADE
Op. Time
Causal Part
Nature
Code
Cause
Code
0.3 M/H
39118-2BAN4
39118-2BAN6
39118-2BAV6
39118-2BAV8
I3T
ZZ3
GDS Information:
System Selection: ENGINE CONTROL MODULE (ECM)
Event #
Description
587*
AD PE 1.6T-GDI - P0128 DTC IMPROVEMENT
(*or use a later available event as listed in the GDS ECU Update screen if one is available.)
Service Procedure:
1. Perform GDS Mobile software update per TSB 15-GI-001.
2. After successful completion of ECM software update, check for Diagnostic Trouble Codes in
ALL menus and erase any DTC.
3. Erase the DTC in the BlueLink system per TSB 12-BE-005-2.
4. Confirm normal vehicle operation.
NOTICE
You must initially perform GDS ECM Update in Auto Mode.
If the ECM Update starts but then fails in Auto Mode, perform the update in Manual Mode to
recover.
Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet Repair
ECM SOFTWARE UPDATE – DTC P0128
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.
ECM ROM ID Information Table:
MODEL
AD
1.6L Turbo
TM
IMMO.
PCM P/No.
6MT
+IMMO
7DCT
ROM ID
OLD
NEW
39118-2BAN4
TAD-KNU06F00060A
TAD-KNU06FF0060A
+IMMO
39118-2BAN6
TAD-KNU06F000H0A
TAD-KNU06FF00H0A
6MT
+IMMO
39118-2BAV6
TAD-0NU06F00060A
TAD-0NU06F10060A
7DCT
+IMMO
39118-2BAV8
TAD-0NU06F000H0A
TAD-0NU06F100H0A
NOTE: +IMMO = Start Stop Button, MT = Manual Transmission, DCT = Dual Clutch Transmission
Manual Mode Password Information Tables:
EVENT #
587
MENU
PASSWORD
AD PE 1.6T-GDI MT +IMMO 39118-2BAN4
4281
AD PE 1.6T-GDI DCT +IMMO 39118-2BAN6
6282
AD PE 1.6T-GDI MT +IMMO 39118-2BAV6
6281
AD PE 1.6T-GDI DCT +IMMO 39118-2BAV8
8281
TSB #: 20-FL-007H
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TSB/Document ID: 20-FL-007H
Replacement Service Bulletin Number:
MFR Communication Date: 2020-07-13
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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