NHTSA ID Number: 10201469
Manufacturer Communication Number: 21-AT-014H
TSB/Document Date: 2021-09-17
Summary
Certain vehicles (listed below) equipped with 7-speed Double Clutch Transmissions (DCT) may exhibit abnormal vibration at low speeds. This bulletin outlines the procedures for diagnosing clutch judder, updating the Transmission Control Unit (TCU) with revised logic, and/or replacing the Double Clutch.
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TSB/Document ID: 21-AT-014H
Replacement Service Bulletin Number:
MFR Communication Date: 2021-08-19
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
GROUP
NUMBER
AUTOMATIC
TRANSMISSION
Technical Service Bulletin
SUBJECT:
21-AT-014H
DATE
MODEL(S)
TUCSON (TL) 1.6T,
SONATA (LFa) 1.6T
August, 2021
DUAL CLUTCH TRANSMISSION JUDDER DETECTION AND TCU
SOFTWARE UPDATE
This TSB supersedes 20-AT-021H by putting Tucson and Sonata models on their own TSB and
provides a revised GDS-M software update for low speed judder.
Description: Certain vehicles (listed below) equipped with 7-speed Double Clutch Transmissions
(DCT) may exhibit abnormal vibration at low speeds. This bulletin outlines the procedures for
diagnosing clutch judder, updating the Transmission Control Unit (TCU) with revised logic, and/or
replacing the Double Clutch.
Applicable Vehicles: 2016-2018 Tucson (TL) 1.6L Turbo
2015-2018 Sonata (LFa) 1.6L Turbo
Parts Information:
MODEL
Tucson (TL) 1.6L Turbo
Sonata (LFa) 1.6L Turbo
DTC
PART
PNC
PART NUMBER
Double Clutch
41200C
41200-2D220
44167G
41068-2D000
Warranty Information:
MODEL
OP CODE
OPERATION
OP TIME
CAUSAL
PART
Tucson (TL)
1.6L Turbo
Sonata (LFa)
1.6L Turbo
41200F18
GDS-M Judder
Inspection Only
0.3 M/H
41200-2D101
Tucson (TL)
1.6L Turbo
Sonata (LFa)
1.6L Turbo
41200F19
GDS-M Judder
Inspection + TCU
Upgrade +
GDS-M Judder
Reinspection
0.8 M/H
41200-2D101
Tucson (TL)
1.6L Turbo
41200F20
3.8 M/H
41200-2D101
Sonata (LFa)
1.6L Turbo
41200F21
4.4 M/H
41200-2D101
Clutch Judder
Inspection +
Double Clutch
Replacement +
TCU Upgrade
NATURE
CODE
CAUSE
CODE
V81
ZZ3
Note: Normal Warranty Applies
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
TCU SOFTWARE UPDATE AND DUAL CLUTCH REPLACEMENT
SUBJECT:
Special Service Tool Information:
SPECIAL SERVICE TOOL PART NUMBER
DESCRIPTION
Double Clutch Remover
09430-C1180
Used to remove the double
clutch from the transmission
Double Clutch Installer
09430-2A240
Used to install the double
clutch into the transmission
Actuator Fixing Jig & Motor
Shaft Reset Tool
09430-C1302
Used to measure and reset
the double clutch actuator
Clutch Abrasion
Compensation
09430-C1300
Clutch actuator adjustment
tool
PHOTO
(If additional SST is needed, replacement parts can be ordered from Bosch
at (866) 539-4248.)
GDS-M Information: System Selection: TCU
Event #
Model
Description
683
TL
1.6T 7DCT - TCU UPDATE FOR ANTI JUDDER LOGIC IMPROVEMENT
684
2015-2017MY LFa
1.6T 7DCT - TCU UPDATE FOR ANTI JUDDER LOGIC IMPROVEMENT
685
2018-2019MY LFa
1.6T 7DCT - TCU UPDATE FOR ANTI JUDDER LOGIC IMPROVEMENT
TCU Manual Mode Password Information Table:
Vehicle Type
Menu
Password
LFa 1.6T-GDI (7-DCT) TCU 95441-2D001
1002
LFa 1.6T-GDI (7-DCT) TCU 95441-2D002
1202
LFa 1.6T-GDI (7DCT) TCU 95441-2D040
1.6T
0402
TL 1.6T(7DCT) TCU 95440-2D720
0272
TL 1.6T(7DCT) TCU 95440-2D721
1272
NOTICE
If judder is detected while testing, be sure to upgrade TCU logic and retest before
replacing the Dual Clutch Transmission.
Attach the Judder inspection result when replacing the Double clutch.
TSB #: 21-AT-014H
Page 2 of 16
SUBJECT:
TCU SOFTWARE UPDATE AND DUAL CLUTCH REPLACEMENT
SUBJECT:
ROM ID Information Table:
MODEL
SYSTEM
PART NUMBER
OLD
NEW
OLD
NEW
DTLOT16NS0
DTLOT16NS1
DTLOT16NS2
DTLOT16NS3
DTLOT16NS4
DTLOT16NS5
DTLOT16NS6
DTLOT16NS7
DTLOT16NS8
DTLOT16N30
DTLOT16N70
95441-2D721
DTLOT16NS9
DTLOT16NSA
DTLOT16NSB
DTLOT16NSC
DTLOT16NSD
DTLOT16N31
DTLOT16N71
95441-2D000
95441-2D001
DLF0T16NS7
DLF0T16NS8
DLF0T16NS9
DLF0T16NSA
DLF0T16NSB
DLF0T16NSC
DLF0T16N32
DLF0T16N72
95441-2D002
95441-2D002
DLF0T16NSD
DLF0T16N33
DLF0T16N73
95441-2D040
DLF0T16NL0
DLF0T16NL1
DLF0T16NL2
DLF0T16NL3
DLF0T16NL4
DLF0T16NL5
DLF0T16N34
DLF0T16N74
95441-2D720
Tucson
(TL)
Sonata
(LFa)
95440-2D721
TCM
TCM
ROM ID
95441-2D040
Updated F850 Clutch Material Identification:
MODEL
2016-2017 Tucson (TL) 1.6L Turbo
2015-2017 Sonata (LFa) 1.6L Turbo
PREVIOUS CLUTCH PART
NUMBER (F833DS)
NEW CLUTCH PART NUMBER
(F850)
41200-2D101
41200-2D220
TSB #: 21-AT-014H
Page 3 of 16
SUBJECT:
SUBJECT:
TCU SOFTWARE UPDATE AND DUAL CLUTCH REPLACEMENT
Troubleshoot Flow Diagram:
NG
A. GDS-M Clutch Judder Inspection
1. Using the GDS-M-M, enter the vehicle
information, select S/W Management, and
then select DCT Clutch Judder
Measurement.
TSB #: 21-AT-014H
Page 4 of 16
SUBJECT:
SUBJECT:
TCU SOFTWARE UPDATE AND DUAL CLUTCH REPLACEMENT
2.
Follow the information specified in Enable
Condition and select OK.
3.
Follow the instructions on the Test Preparation
screen to prepare the vehicle for DCT Judder
Measurement.
Remove the passenger side floor mat and place
the GDS-M flat and straight on the passenger
floor.
Select OK.
TSB #: 21-AT-014H
Page 5 of 16
SUBJECT:
SUBJECT:
TCU SOFTWARE UPDATE AND DUAL CLUTCH REPLACEMENT
4.
Verify that all vehicle conditions are PASS and
select OK.
5.
Follow the instructions from the Judder
Measurement screen to perform the judder
clutch inspection.
The inspection is complete when the 5Times
reading appears.
NOTICE
Do not brake or operate the
accelerator during the inspection.
6.
After the measurement is complete, apply the
brakes for 4-5 seconds.
TSB #: 21-AT-014H
Page 6 of 16
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