21-AT-009H Service Bulletin/Repair Instructions

GROUP

AUTOMATIC

TRANSMISSION

DATE
Technical Service Bulletin

SUBJECT:
JULY, 2021
NUMBER

21-AT-009H

MODEL

PALISADE (LX2)

SANTA FE (TMA)

SANTA FE HYBRID (TM HEV)

SONATA (DN8/DN8A)

SONATA HYBRID (DN8 HEV)

TUCSON (NX4/NX4A)

TUCSON HYBRID (NX4 HEV)
AUTOMATIC TRANSAXLE PUSH-BUTTON SHIFTER DIAGNOSIS
DESCRIPTION: This TSB provides a procedure to diagnose the push button shifter operation.

APPLICABLE MODELS:

2020~

2021~

2020~

2020~

2020~

2022~

2022~
Palisade (LX2)

Santa Fe (TMA) 2.5L

Santa Fe Hybrid (TM HEV) 1.6T

Sonata (DN8/DN8A) 1.6T/2.5L

Sonata Hybrid (DN8 HEV) 2.0L

Tucson (NX4/NX4A) 2.5L

Tucson Hybrid (NX4 HEV) 1.6T
PARTS INFORMATION:

Refer to the PNC in the parts catalog to order the correct part numbers.

MODEL

DESCRIPTION

PNC

PART NUMBER

2020~ Palisade (LX2)

SBW Lever

46700

467W0-*****

2021~ Santa Fe (TMA) 2.5L

42950

42950-*****

2021~ Santa Fe Hybrid (TM HEV) 1.6T

SBW Control Unit (SCU)

or

or

2020~ Sonata (DN8/DN8A) 1.6T/2.5L

42951

42951-*****

2020~ Sonata Hybrid (DN8 HEV) 2.0L

SBW Actuator

42910

42910-*****

2022~ Tucson (NX4/NX4A) 2.5L

Position sensor

42700

42700-*****

2022~ Tucson Hybrid (NX4 HEV) 1.6T

NOTE: Refer to TSB 21-AT-007H to replace the position sensor or SBW actuator.
Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet Repair
SUBJECT:
AUTOMATIC TRANSAXLE PUSH-BUTTON SHIFTER DIAGNOSIS
WARRANTY INFORMATION:
Model
2020~

2021~

2021~

2020~

2020~

2022~

2022~
2021~

2020~

2022~
Palisade (LX2)

Santa Fe (TMA) 2.5L

Santa Fe Hybrid (TM HEV) 1.6T

Sonata (DN8/DN8A) 1.6T/2.5L

Sonata Hybrid (DN8 HEV) 2.0L

Tucson (NX4/NX4A) 2.5L

Tucson Hybrid (NX4 HEV) 1.6T
Santa Fe Hybrid (TM HEV)

Sonata Hybrid (DN8 HEV)

Tucson Hybrid (NX4 HEV)
All
Op Code
Operation
42700R00
Position

sensor
46700R00
SBW lever
42910R00
SBW

Actuator
42950R00
SBW Control

Unit
39110R00
Engine

control unit
95440R00
Transmission

control unit
42700RH1

Additional
Hybrid
42700RQ0
GDS
Nature Cause

Code Code
Op Time
Causal
Refer to

WEBLTS

for

current

LTS time
See Parts

Information

table on

Page 1
I3A
ZZ3
NOTE: Normal Warranty Applies
SERVICE PROCEDURE:

1.
Attach a GDS and select Fault Code searching, All and OK. Record the DTC and description.

Delete the DTC.
2.
If DTC are found:

•

•
For all models: Refer to the related shop manual, E-Shifter or SBW Control Unit section for

repair guidance.

For Palisade (LX2): If the DTC listed below are found, refer to the TSB and update the SCU.

Model

Palisade (LX2)
DTC

P106D00

P106D71

U110382
Description

Actuator initialization error

Actuator motor stuck error

SBW lever alive counter error
TSB

21-AT-008H – SCU Update
If no DTC are found: Go to Step 3.
TSB #: 21-AT-009H
Page 2 of 4
SUBJECT:
AUTOMATIC TRANSAXLE PUSH-BUTTON SHIFTER DIAGNOSIS
3.
Start the engine. From the GDS home screen, select Data Analysis and A/T menu and the

parameters shown below. Push the shift buttons to change gears P, R, N and D. If the cluster

and the GDS data shows:

• Correct gear, the TCU received the correct signals from the SBW lever. The SBW lever is

currently functioning correctly and the related harness currently does not have an

open/short. Go to Step 4.

• Does not show the correct lever position, the SBW lever or related harness may have a

fault. If no damage or loose pins are found with the related harness, replace the SBW lever.
4.
Start the engine. From the GDS home screen, select Data Analysis, SCU menu and the

parameters shown below. Push the shift buttons to change gears. If the GDS data shows:

• Correct Target Lever Position and Actual Lever Position: The SCU commanded the

SBW actuator to shift to the requested gear. The SBW actuator and position sensors 1 and

2 are functioning correctly and the related harness currently does not have an open/short.

Go to Step 5.

• Does not show the correct Target Lever Position: The SCU did not command the SBW

actuator to shift to the requested gear. The SCU or related harness may have a fault.

• Does not show the correct Actual Lever Position: The SBW actuator did not select the

requested gear. The SBW actuator or related harness may have a fault.

NOTE: The Motor Feedback Current should briefly show voltage when a shift button is

pressed, indicating the SCU sent 12 volts to the SBW actuator. If no voltage is shown, the SCU

or related harness may have a fault.

NOTE: The sum of Position sensor 1 and 2 should be approximately 100%.
TSB #: 21-AT-009H
Page 3 of 4
SUBJECT:
AUTOMATIC TRANSAXLE PUSH-BUTTON SHIFTER DIAGNOSIS
5.
Turn the engine off and push the SSB 2 times to turn the ignition ON. Press the brake pedal.

From the GDS home screen, select Actuation Test and SCU menu. Test the Target position

for P, R, N and D. Press the arrow to change the selection. If the GDS and cluster show:

• Correct Target Position for P, R, N and D: The SCU sent 12v to the SBW actuator, the

SCU and SBW actuator are currently operating correctly and the related harness currently

does not have an open/short circuit. Go to Step 6.

• Does not show the correct Target Position for P, R, N and D: The SCU, SBW actuator or

related harness may have a fault.
6.
If Steps 3~5 do not show a fault, visually check the wiring harness between the PCM or TCU

and transmission for a damaged wire or open/short circuit. Check for a damaged pin or pin not

fully inserted into the connector.

• If damage exists, repair or replace the related harness and drive the vehicle to confirm the

repair.

• If no damage or open/short circuit is found, go to Step 7.
7.
If Steps 3~5 did not find any faults and the issue cannot be duplicated, the issue may be

intermittent. Contact Techline for advice.

APPENDIX: SBW OPERATION

4 components are required to shift to P, R, N and D.

In addition, the PCM or TCU are required to select the correct transmission solenoids.
TSB #: 21-AT-009H
Page 4 of 4

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