NHTSA ID Number: 10200512
Manufacturer Communication Number: TSB_TRA096
TSB/Document Date: 2021-08-25
Summary
TECHNICAL SERVICE BULLETIN: 8AT (A8LR1-SBW) SOLENOID VALVE REPLACEMENT AND TCU LOGIC IMPROVEMENT - This bulletin provides the procedure to replace two (2) solenoid valves (35R and 4&OD) and improve the gear shift logic of the Transmission Control Unit (TCU) on some 2015-2016MY K900 (KH) vehicles, equipped with Tau 5.0L engine and 8-speed automatic transmission w/Shift-By-Wire (A8LR1-SBW), which may exhibit symptoms of abnormal shift shock during an upshift (2nd-->3rd, 3rd-->4th, 4th-->5th). This condition occurs on vehicles with mileage over 12,000 miles and may be due to possible premature wear of the solenoid valve. To correct this concern, replace the 35R and 4&O/D solenoid valves with added “H†ventilation port, perform TCU relearn, and, if applicable, apply the improved logic to the Transmission system using the KDS ECU Upgrade function as described in this bulletin.
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TSB/Document ID: TSB_TRA096
Replacement Service Bulletin Number:
MFR Communication Date: 2021-08-20
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
GROUP
MODEL
TRA
2015MY
K900 (KH) w/8AT
NUMBER
DATE
096
August 2021
TECHNICAL SERVICE BULLETIN
8AT (A8LR1-SBW) SOLENOID VALVE REPLACEMENT
AND TCU LOGIC IMPROVEMENT
This bulletin provides the procedure to replace two (2) solenoid valves (35R and 4&OD) and improve the gear
shift logic of the Transmission Control Unit (TCU) on some 2015-2016MY K900 (KH) vehicles, equipped with
Tau 5.0L engine and 8-speed automatic transmission w/Shift-By-Wire (A8LR1-SBW), which may exhibit
symptoms of abnormal shift shock during an upshift (2nd→3rd, 3rd→4th, 4th→5th). This condition occurs on
vehicles with mileage over 12,000 miles and may be due to possible premature wear of the solenoid valve. To
correct this concern, replace the 35R and 4&O/D solenoid valves with added “H” ventilation port, perform TCU
relearn, and, if applicable, apply the improved logic to the Transmission system using the KDS ECU Upgrade
function as described in this bulletin. For confirmation that the latest reflash has been applied to a vehicle
you are working on, verify the ROM ID using the table on page 3 of this bulletin.
Model
K900 (KH)
w/Shift-By-Wire
Engine
Production Date Range
ROM ID Version
Tau 5.0L GDI
January 1, 2014 to September 25, 2014
SKH0G50NB2
SKH0G50NB3
SKH0G50NB5
IMPORTANT
The following procedures must be performed in sequence. If not, other shift problems may occur.
1.
35R & 4&OD solenoid valve replacement
2. TCU upgrade
3. Reset TCM adaptive learning values
CAUTION
If this procedure is performed on a
‘standard’ shift-by-cable (SBC) type
35R
Solenoid Valve
4&OD
Solenoid Valve
vehicle, damage may occur to the
transmission.
A printed copy is for reference only; publication information can be updated at any time.
Always refer to KGIS for the latest information. After logging in kdealer.com, the newest technical
publications are listed in ‘Service Releases’ and has the latest service information that has been released.
Page 2 of 8
8AT TCM SOLENOID VALVE REPLACEMENT
AND GEAR SHIFT LOGIC IMPROVEMENT
SUBJECT:
Solenoid Valve Replacement Procedure:
IMPORTANT
After replacing the solenoids, check if the vehicle has the latest TCU ROM ID. If not, upgrade TCU
ROM ID first, then perform TCM adaptive learning values.
Previous Part
New Part
4&OD Solenoid Valve
35R Solenoid Valve
4&OD Solenoid Valve
Added “H” ventilation port
No ventilation port
1.
35R Solenoid Valve
Replace the two (2) solenoid valves (35R and
4&O/D)
by
referring
to
System
the
→
“Automatic
Automatic
Transmission Control System → 35R and 4&OD
Clutch Control
Solenoid
Valve
→
Repair
Procedures” chapter in the applicable Shop
Manual on KGIS.
NOTE: Be sure to CAREFULLY follow all of the
instructions outlined in KGIS.
Be sure that the wire harness connector is
unlocked (located on the passenger/right side)
prior to removing/lowering the valve body.
CAUTION
Damage to wire harness may occur if
it is still attached/locked secure.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: TRA096 K900 (KH) August 2021
35R
4&OD
Page 3 of 8
8AT TCM SOLENOID VALVE REPLACEMENT
AND GEAR SHIFT LOGIC IMPROVEMENT
SUBJECT:
Follow bolt removal sequence on KGIS.
CAUTION
The valve body is heavy, carefully
lower it when removing. DO NOT
drop it or damage will occur.
NOTE: Be sure to CAREFULLY follow all of the
instructions outlined in KGIS.
After removing the valve body, ensure that the
black plugs are not missing (they may fall
off/down when removing the valve body). Be
sure to reinstall.
CAUTION
•
•
•
•
•
•
2.
Use a coated apron, latex gloves.
An expert (Expert based on the TRP standard) should perform this service.
Be careful to NOT allow foreign matter to enter the valve body or transmission.
Ensure to install both 35R and 4&OD solenoid valves in the correct location.
Up to 8.45 qts of ATF should be refilled and comply with the ATF level measuring method.
Ensure to torque all required bolts to specifications referenced on KGIS.
After replacing the solenoids, check if the
vehicle has the latest TCU ROM ID from page 4
using KDS.
•
If
not,
proceed
to
ECU
Upgrade
Procedure on page 4. Select ‘OK’.
•
If yes, proceed to reset TCU adaptive
learning values as outline on KGIS.
IMPORTANT
Upgrade TCU ROM ID first, then
perform TCM adaptive learning values.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: TRA096 K900 (KH) August 2021
Page 4 of 8
8AT TCM SOLENOID VALVE REPLACEMENT
AND GEAR SHIFT LOGIC IMPROVEMENT
SUBJECT:
ECU Upgrade Procedure:
To correct this condition, the ECU should be reprogrammed using the KDS
download, as described in this bulletin.
Upgrade Event Name
543. KH LAMBDA 3.8/TAU 5.0 GEAR UPSHIFT LOGIC IMPROVEMENT
NOTICE
•
•
•
•
•
•
•
•
•
Confirm a fully charged battery (12.3 volts or higher is necessary) is used or utilize a fully
charged jump starter box connected to the battery.
Ensure the KDS GDS is sufficiently charged at 60% or higher prior to reflash.
All ECU upgrades must be performed with the ignition set to the ‘ON’ position unless otherwise
stated.
Damaged VCI II units should not be used and promptly replaced.
Be careful not to disconnect the VCI-II connected to the vehicle during the ECU upgrade
procedure.
DO NOT start the engine during ECU upgrade.
DO NOT turn the ignition key ‘OFF’ or interrupt the power supply during ECU upgrade.
When the ECU upgrade is completed, turn the ignition ‘OFF’ and wait 10 seconds before
starting the engine.
ONLY use approved ECU upgrade software designated for the correct application.
IMPORTANT
It is recommended to ALWAYS check the Electronic Parts Catalog (EPC) to locate the ECU Part
Number respective to Auto/Manual Mode ROM IDs. DO NOT reference the parts label affixed to
the ECU.
NOTICE
Before attempting an ECU upgrade on any Kia
model, make sure to first determine whether the
applicable model is equipped with an immobilizer
security system. Failure to follow proper
procedures may cause the PCM to become inoperative after the upgrade and any claims associated
with this repair may be subject to chargeback.
ROM ID INFORMATION TABLE:
Upgrade Event #543
Model
KH
Engine
Tau 5.0L GDI
TM
8AT
ECU P/No.
95440 4EDB0
ROM ID
Previous
New
SKH0G50NB2
SKH0G50NB3
SKH0G50NB5
SKH0G50NB6
To verify the vehicle is affected, be sure to check the Calibration Identification of the vehicle's ECM ROM ID
and reference the Information Table as necessary.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: TRA096 K900 (KH) August 2021
Page 5 of 8
8AT TCM SOLENOID VALVE REPLACEMENT
AND GEAR SHIFT LOGIC IMPROVEMENT
SUBJECT:
NOTICE
Prior to performing the ECU upgrade, be sure to check that the KDS is fully charged.
1.
Connect the VCI-II to the OBD-II connector,
located
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