GROUP
CHA

NUMBER
060 (Rev 3, 01/18/2019)

MODEL
2011-2014MY
Optima (QF)
2016-2018MY
Sorento (UMa)
DATE
January 2016

TECHNICAL SERVICE BULLETIN
SUBJECT:

ECU UPGRADE – STEERING LOGIC IMPROVEMENT

 NOTICE
This bulletin has been revised to include additional information. New/revised
sections of this bulletin are indicated by a black bar in the margin area.
This bulletin provides information related to the MDPS ECU software upgrade for some 20112014MY Optima (QF), produced from August 2, 2010 through July 27, 2014, and 20162018MY Sorento (UMa) vehicles, produced from October 27, 2014 through August 22, 2017,
which may experience a notchy feel in the steering wheel. To correct this condition, the vehicle
should be evaluated using the MDPS Effort Measurement Software detailed in the repair
procedure starting on page 2 to determine whether an improved steering logic should be
installed in the MDPS ECU, or if an MDPS column replacement is required. To determine
whether the updated MDPS ECU reflash applies to a vehicle you are working on, or whether it
has already been performed, verify ROM ID using the tables in this TSB.

Kia Diagnostic System (KDS)

File Under:
Circulate To:

X General Manager


X Service Advisors


X Technicians


X Service Manager


X Parts Manager


X Body Shop Manager  Fleet Repair


Page 2 of 13
SUBJECT:

ECU UPGRADE – STEERING LOGIC IMPROVEMENT

MDPS Effort Measurement Procedure:
1. Remove the top bolt from the universal
joint. NOTE: place a mark across the
universal joint to make reinstallation
easier.
Tightening torque:
21.7 – 25.7lb.ft (29.4 – 34.3N.m)

 NOTICE
After
disconnecting
the
universal joint, do NOT turn the
steering wheel more than 270°
to prevent damage to the clock
spring.

2.

Prior to starting the MDPS effort
measurement test (page 3), position the
steering wheel slightly to the right, as
shown, with the Steering Angle Sensor
(SAS) in the positive range. NOTE:
attempting to start the steering effort
test with the SAS in the negative
range will trigger an error message
and prevent the test from running.

TSB: CHA060 (Rev 3) Optima (QF), Sorento (UMa) January 2016

Page 3 of 13
SUBJECT:

ECU UPGRADE – STEERING LOGIC IMPROVEMENT

3.

Connect the VCI-II to the OBD-II
connector, located under the driver’s side
of the instrument panel.

4.

With the ignition ON, turn ON the KDS
tablet. Select KDS from the home
screen.

5.

Confirm communication with VCI (A) and
then configure the vehicle (B) using the
AUTO VIN (C) feature.

B
A

C
6.

Select S/W Management.

TSB: CHA060 (Rev 3) Optima (QF), Sorento (UMa) January 2016

Page 4 of 13
SUBJECT:

ECU UPGRADE – STEERING LOGIC IMPROVEMENT

7.

Select Motor Driven Power Steering →
MDPS Effort Measurement.

8.

Read the Caution message then select
OK to accept and continue.

9.

Select OK to continue.

TSB: CHA060 (Rev 3) Optima (QF), Sorento (UMa) January 2016

Page 5 of 13
SUBJECT:

ECU UPGRADE – STEERING LOGIC IMPROVEMENT

10. Verify the customer’s complaint matches
the information on the screen and select
OK.

11. Confirm all test conditions have been
performed and select OK.

12. Perform the MDPS effort measurement
test by rotating the steering wheel,
slowly, at a speed of 5 Deg/Sec. Repeat
the MDPS effort measurement test a
total of nine (9) times.

 NOTICE
If the five (5) Deg/Sec. rotation
speed is exceeded, a message,
as shown below, will display.

TSB: CHA060 (Rev 3) Optima (QF), Sorento (UMa) January 2016

Page 6 of 13

ECU UPGRADE – STEERING LOGIC IMPROVEMENT

SUBJECT:

13. After performing the MDPS effort
measurement test successfully, the
results will be displayed along with the
appropriate course of action. Select OK
to continue.

14. Refer to the table below for the correct
course of action after the ‘Test
Completed’ screen is displayed. NOTE:
select Report to save the report for
future reference.

Item
Steering Effort
Value

Max. Effort

Remedy

Proceed to

0 - 1.5 lb.ft (0 - 2.0 Nm)

No further action is required

N/A

1.5 - 3.3 lb.ft (2.0 - 4.5 Nm)

ECU Upgrade

Page 7

3.3 lb.ft (4.5Nm) or higher

Replace MDPS

Page 12

15. If no further action is required, reinstall the universal joint and secure in place using the
original bolt.

 NOTICE
Be sure to use alignment mark made in step 1 to align the universal joint with
the pinion.
TSB: CHA060 (Rev 3) Optima (QF), Sorento (UMa) January 2016

Page 7 of 13
SUBJECT:

ECU UPGRADE – STEERING LOGIC IMPROVEMENT

ECU Upgrade Procedure (for MDPS Effort Value of 1.5 - 3.3lb.ft/2.0 - 4.5N.m):

 IMPORTANT
ECU Upgrade Procedure with Upgrade Event #388 (UMa) can ONLY be performed in
Manual Mode. Reference the ROM ID table on page 8 and password table on page 11.
Performing this upgrade on non-applicable vehicles (equipped with R-MDPS) may
result in loss of steering assist and may only be resolved with MDPS assembly
replacement.
To correct this condition, the ECU should be reprogrammed using the KDS
download, as described in this bulletin.
Upgrade Event Name
258.QF EPS LOGIC IMPROVEMENT 2
*388.UMA EPS STEERING WHEEL STICKING LOGIC IMPROVEMENT

*Can ONLY be performed in Manual Mode

 NOTICE









A fully charged battery is necessary before ECU upgrade can take place. It is
recommended that the Midtronics GR8-1299 system be used in ECU mode during
charging. DO NOT connect any other battery charger to the vehicle during ECU
upgrade.
All ECU upgrades must be done with the ignition key in the ‘ON’ position.
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 model,
year.

 NOTICE
Before attempting an ECU upgrade on any Kia model, make sure to first determine
whether the particular 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.

TSB: CHA060 (Rev 3) Optima (QF), Sorento (UMa) January 2016

Page 8 of 13
SUBJECT:

ECU UPGRADE – STEERING LOGIC IMPROVEMENT

ROM ID INFORMATION TABLE:
Upgrade Event #258, #388
Model

System

ECU P/No.

ROM ID
Previous

New

4TFA0911
4TFB1001
4TFC1002
56300-2T200
4TFD1003
56300-2T210
4TFF1004
56300-2T220
4TFF1005
56300-2T300
4TFG1007
56300-2T320
4TFH1009
56300-2T450
4TFJ1009
56300-2T270
4TFK1103
56300-2T280
4TFL1104
56300-2T201
4TFM1104
56300-2T211
2011-2013MY
EPS
4TFN1105
4TFZ1505
Optima (QF)
56300-2T221
4TFO1106
56300-2T301
4TFP1107
56300-2T321
4TFP1108
56300-2T451
4TFQ1109
56300-2T410
4TFR1110
56300-2T510
4TFS1110
56300-2T271
4TFT1111
56300-2T281
4TFU1112
56300-2T551
4TFW1112
56300-2T571
4TFX1202
4TFY1204
4TFZ1212
4TFDA211
4TFDB302
56300-2T305
4TFDC304
56300-2T325
4TFDD305
56300-2T455
2014MY
4TFDE305
Optima (QF)
EPS
56300-2T415
4TFDL505
4TFDF306
56300-2T515
4TFDG307
56300-2T275
4TFDH309
56300-2T285
4TFDJ309
4TFDK406
4UMDC102
4UMDC103
4UMDC104
2016-2018MY
56310-C5000
EPS
4UMDC105
4UMDC109
Sorento (UMa)