TECHNICAL INSTRUCTIONS
FOR
LIMITED SERVICE CAMPAIGN KLG
CUSTOMER SUPPORT PROGRAM 19LE05
SAFETY CONNECT SYSTEM – VEHICLE LOCATION INACCURATE
CERTAIN
2011 – 2017 MODEL YEAR LS, 2013 – 2016 MODEL YEAR LS Hybrid,
2011 – 2017 MODEL YEAR GS, 2016 – 2017 MODEL YEAR GS-F,
2013 – 2017 MODEL YEAR GS Hybrid, 2010 – 2017 MODEL YEAR IS,
2011 – 2015 MODEL YEAR IS-C, 2013 – 2014 MODEL YEAR IS-F,
2015 – 2017 MODEL YEAR RC, 2015 – 2017 MODEL YEAR RC-F,
2011 – 2017 MODEL YEAR CT, 2010 – 2017 MODEL YEAR RX,
2010 – 2017 MODEL YEAR RX Hybrid, 2015 – 2017 MODEL YEAR NX,
2015 – 2017 MODEL YEAR NX Hybrid, 2013 – 2017 MODEL YEAR LX,
2013 – 2018 MODEL YEAR GX, 2010 – 2017 MODEL YEAR ES,
2013 – 2017 MODEL YEAR ES Hybrid

Updated 08/24/2020
Update 8/24/20
- Special CUW Application has been updated. Techstreams running version 15.1 or newer
software will need to update the Special CUW Application using the link on page 6
Update 10/17/19
- The title has been updated to include Customer Support Program 19LE05
Update 9/13/19

-

The process has been updated to address an issue with Techstream. Technicians will no
longer determine if an update is required based on the Update column Yes/No option
displayed during a health check. Technicians will determine if an update is required based on
calibration ID only

The repair quality of covered vehicles is extremely important to Lexus. All dealership technicians
performing this LSC are required to successfully complete the most current version of the E-Learning
course “Safety Recall and Service Campaign Essentials”. To ensure that all vehicles have the repair
performed correctly; technicians performing this LSC repair are required to currently hold at least one of
the following certification levels:
• Certified
• Senior
• Master
It is the dealership’s responsibility to select technicians with the above certification level or greater to
perform this LSC repair. Carefully review
your resources, the technician skill level, and ability before
assigning technicians to this repair. It is important to consider technician days off and vacation
schedules to ensure there are properly trained technicians available to perform this repair at all times.
1

I.

OPERATION FLOW CHART
1.
2.

Verify Vehicle Eligibility
Check the VIN on the R.O. matches
the vehicle
Check the TIS Vehicle Inquiry System.
Covered

Not Covered

No further action required.

Install the SPECIAL CUW application.

Perform Health Check on Techstream and
check the Calibration ID.



Not Covered


Reinstall the REGULAR CUW
application.
Return the vehicle to the customer.

Covered

Only GS, GS HV, IS(Not included IS-C, IS-F),
RC, RC-F, CT, NX, NX HV, GX, ES, ES HV:
Separate the front passenger seat and disconnect
the connectors of the front passenger seat.
Disconnect “D/C CUT” or ”SHORT PIN”.
Only NX (Gasoline):
Disconnect “EFI No.1 FUSE (10A)”.

Only NX (Gasoline):
Disconnect “EFI No.1 FUSE (10A)”.

Connect GR8/DCA, apply wheel blocks and
parking brake and move the shift lever to N
position.

Connect GR8/DCA, apply wheel blocks and
parking brake and move the shift lever to N
position.

Reprogram DCM.

Reprogram DCM.

Reprogramming
succeeded

Reprogramming
failed

Remove DCM from the vehicle.

Reprogramming
failed

Reprogramming
succeeded

Remove DCM from the vehicle.

Reprogram DCM again.

Reprogram DCM again.

Move the shift lever to P position and remove
the wheel blocks and GR8/DCA.

Move the shift lever to P position and remove
the wheel blocks and GR8/DCA.

Perform Verification Health Check.
Reinstall the REGULAR CUW application.
Campaign completed, return the vehicle to the customer.
2

II. IDENTIFICATION OF AFFECTED VEHICLES
NOTE:
• Check the TIS Vehicle Inquiry System to confirm the VIN is involved in this LSC and that the
campaign has not already been completed prior to dealer shipment or by another dealer.
• TMNA warranty will not reimburse dealers for repairs conducted on vehicles that are not affected
or were completed by another dealer.

III. PREPARATION
A. TOOLS & EQUIPMENT
•
•

Standard Hand Tools
CUW Maintenance Tool

•
•

GR8/DCA Battery Diagnostic Station
Techstream 2.0 / TIS Techstream /
Techstream Lite (Software 14.1 or
Higher)

B. CABLE No.1 & CABLE No.2
The tools shown below have been provided prior to the
launch of the campaign. Those tools are necessary when
performing this reprogramming procedure.*
CABLE No.1

CABLE No.2

* DO NOT use these tools except for this campaign.

IV. BACKGROUND
The Data Communication Module (DCM) in the subject vehicles are equipped with software to identify the location of
the vehicle using the Global Positioning System (GPS) to support features of the Safety Connect system. Due to
incorrect programming in the DCM software, after November 2nd, 2019, the GPS coordinates for this system will be
calculated incorrectly. This will cause the system to use incorrect vehicle coordinates if one of the system’s features
is activated.

3

V. PROCEDURE OVERVIEW

CRITICAL INFORMATION
• You will perform the reprogramming after installing a dedicated CUW application (Special CUW (only for
DCM)) to a Techstream. By using this dedicated CUW application, the reprogramming time can be
shortened.
• The reprogramming takes more than 60 minutes to complete, and the vehicle will turn the IG OFF
automatically when it has passed about 60 minutes with IG ON while the shift lever is in P position.
Therefore, make sure to perform the following works before starting the reprogramming.

4

VI. SAFETY PRECAUTIONS

CRITICAL INFORMATION - READ THOROUGHLY
An ECU could be damaged if an error occurs in the communication while reprogramming the ECU.
Confirm all work is performed as described in these instructions.
STABILIZE THE POWER TO THE TECHSTREAM SIDE
a) Be sure to connect the Techstream to an external AC power supply.
NOTE:
The ECU could be damaged if the battery voltage of the
Techstream drops while reprogramming.

b)

Turn off the screen saver and power saving mode of the
Techstream so that the power to the hard disk is kept supplied.
NOTE:
If the screen saver or power saving mode launches while
reprogramming, the communication may be disconnected,
resulting in the damage of the ECU.

c)

DO NOT block the ventilation opening for the cooling fan of the
Techstream.
NOTE:
If the ventilation opening for the cooling fan is blocked with a
sheet cover or the like, the Techstream may be heated
excessively, causing the operation of the Techstream to stop.
Due to the stop of the operation, the communication for
reprogramming signals could be stopped, resulting in the
damage of the ECU.

5

VII.

INSTALLATION OF THE SPECIAL CUW APPLICATION
• Please make sure to use the special CUW application to perform the ECU reprogramming.
• You cannot exit the special CUW application until you complete the reprogramming.

DOWNLOAD THE SPECIAL CUW APPLICATION
a) Click the link below to download the Special CUW Application
NOTE: Special CUW Application has been updated. Techstreams running version 15.1 or newer software will
need to delete the current Special CUW Application software on Techstream and download the new version
below.
SPECIAL CUW APPLICATION V.2

RUN THE INSTALLER

SELECT THE SPECIAL CUW APPLICATION
a) Select “Special CUW (only for DCM)”.
b) Click on the “Next” button to install the special CUW application.

COMPLETE INSTALLATION
a) Click on the “Finish” button to finish.
NOTE: Use the special CUW application after installing it to the
personal computer which has Techstream.

VIII.

VEHICLE PREPERATION

VEHICLE PREPERATION
a) Record settings of the audio system, air conditioner, front seats position, etc. since the cable of the negative
battery terminal is going to be disconnected in a later step.

Confirm the following conditions
•
•
•
•

Vehicle in the IG ON position (engine off).
Turn off all electrical accessories (i.e. audio system, etc.)
Windshield wiper switch in the OFF position.
Headlight switch in the DRL OFF position.

CONNECT THE 12V BATTERY TO A POWER SUPPLY (GR8/DCA)
a) Connect the GR8/DCA or other type of a power supply (not a battery charger) to the 12V battery.
b) Select the Power Supply Mode from the Charge Menu of the GR8/DCA.
A power supply MUST be used during reprogramming. ECU damage will occur if the battery
voltage is not properly maintained during this re-flash procedure.
NOTE: A power supply must be connected directly to the 12V battery terminals and NOT the remote
jump posts under the hood (if equipped).

6

IX. CHECK FOR DTC’S
CONNECT THE TECHSTREAM TO THE VEHICLE
a) Turn the IG OFF.
b) Using a Cable No.1 (provided tool), connect the Techstream to the vehicle.
NOTE: DO NOT use this tool except for this campaign.
Follow the instructions below. Otherwise, the battery voltage will decrease or communication
will become disabled, and this may require the replacement of the DCM.
• Turn off the screen saver and power saving mode of the PC.
• Use the external power supply for the PC. (DO NOT use the PC’s internal battery or vehicle’s battery.)
• Ensure that the communication cable connectors are securely connected, the cable is in
good condition, and the connection is stable.

VERIFY TECHSTREAM SETUP
a) Verify that the Techstream meets the following conditions:
• The software version 14.1 or higher is loaded.
• The Techstream battery is fully charged. If not, connect the Techstream to a 120V source.
• The DLCIII cable is in good condition.
The Techstream’s battery voltage must also be maintained during the re-flash procedure. If
necessary, plug the Techstream into a 120v outlet during this procedure.
NOTE: If the Techstream communication with the vehicle fails during the re-flash procedure, the
DCM will be damaged.
CHECK FOR DTCs
a) Using a Techstream, perform a Health Check to check for any
Diagnostic Trouble Codes.
NOTE: This Campaign covers only the software update to the
Telematics System, as detailed in these instructions. It does not cover
the diagnosis or replacement of any other systems on the vehicle.

7

X. TELEMATICS SYSTEM CALIBRATION ID CHECK

Action to take for Telematics System Reprogramming
There are 3 different ways to reprogram the Telematics System.
Make sure to follow the instructions of these technical instructions.
CHECK CURRENT CALIBRATION
a) Determine the status of an available update; indicated by the calibration ID.
Note: Do not use the update column and an indicator if an update is required as it will always say No.
Only use calibration ID

Yes

Is the calibration ID listed in
the table below?

No


Proceed to the next step.

b)



Campaign complete. Return the
vehicle to the customer.
Reinstall the REGULAR CUW
application.

Reprogram the Telematics System to the NEW CID following the table below.
NOTE: Take note of both current and new CID to be able to select correctly.

DCM(Telematics System) Calibrations
DCM
Model

Current CID

Action

12DCM

00002.40.06.04.01.91

Go to section XI

00003.00.05.01.03.16
00003.00.05.01.03.21
13/14
VI-DCM

00003.00.05.01.13.02
00003.00.05.01.13.03

Go to section XII

00003.00.05.01.13.04
00003.00.05.01.13.06
CID other than above

Go to section XVI
8

XI. 12DCM UPDATE CALIBRATION

Vehicle preparation before updating the telematics system
VEHICLE PREPARATION BEFORE UPDATING THE TELEMATICS SYSTEM
a) Turn IG to the OFF position.
Be sure to disconnect each
connector after disconnect
the negative battery terminal

This illustration uses GS for
reference

b)

DISCONNECT THE FRONT PASSENGER SEAT CONNECTORS
(Only GS, GS HV, IS (Not included IS-C, IS-F), RC, RC-F, CT, NX, NX
HV, GX, ES, ES HV)
NOTE:
• The reprogramming may fail if you perform it without
disconnecting the connectors. Please make sure to disconnect
the connectors before performing the reprogramming.
• Disconnect the cable from the negative battery terminal to
disable the SRS system. Refer to the repair manual in detail.
• Be sure to disconnect each connector after disconnect the
negative battery terminal.
(1) Separate the front passenger seat, and then disconnect each
connector of the front passenger seat.
NOTE:
- Separate the front passenger seat following the instructions on the
repair manual. However, there is no need to take it out.
- Depending on seat type, you may need to perform certain
initializations (such as Zero Point Calibration) refer to the repair
manual for details
Go on TIS and refer to the repair manual for how to separate the seat
Path: SEAT / FRONT SEAT ASSEMBLY / REMOVAL
Note: you can copy and paste the path above into the TIS search
bar to access the instructions quickly
(2) Connect the negative battery terminal and GR8/DCA.

c)

This illustration uses GS for
reference

DISCONNECT “D/C CUT ” OR ”SHORT PIN”
NOTE:
• The reprogramming may fail if you perform it without
disconnecting the “D/C CUT” or “SHORT PIN”. Please make
sure to disconnect the “D/C CUT” or “SHORT PIN” before
performing the reprogramming.
• Refer to Section XIV for the location of “D/C CUT” and
“SHORT PIN” of each vehicle model.

9

Only NX (Gasoline)

d)

DISCONNECT “EFI No.1 FUSE (10A)” (Only NX (Gasoline))
NOTE:
Failure to remove the EFI No.1 Fuse may cause damage to the
fuel pump assembly.

e)

Turn the IG to the ON position (engine off).
NOTE:
DO NOT start the engine.
HINT:
Depending on the model, method of IG ON may be different.

10

UPDATE THE TELEMATICS SYSTEM
Click the NEW CID link below to update the DCM

DCM(Telematics System) Calibrations
DCM
Model

Current CID

NEW CID

12DCM

00002.40.06.04.01.91

00002.80.06.04.01.91

Check the CUW application
a)

Check if the Special CUW (only for DCM)” is downloaded.
NOTE:
If Special CUW (only for DCM) has not been downloaded, follow
the instructions of section VII.

b)

When Calibration Update Wizard is launched, click on “Next”.

c)

Select a device tool, and then click on “Next”.

d)

Confirm that "Current Cal ID" and "New Cal ID" are correct, and then
click on “Next”.
NOTE: The calibration IDs will be displayed as shown on the left.
Please make sure you DO NOT mistake where to check to confirm
the IDs.

11

e)

Follow the on-screen instructions and turn the IG off, and then click
on “Next”.
NOTE: After “Next” is clicked, a bar showing the progress is
displayed. DO NOT turn the IG on while the bar is shown.

Vehicle condition before reprogramming
DO NOT start the engine.
f)

Turn the IG to the ON position (engine off).
NOTE:
DO NOT depress the brake pedal.
HINT:
Depending on the model, method of IG ON may be different.

g)

Move the shift lever to Neutral position.
NOTE:
• The reprogramming takes more than 60 minutes to
complete, and the vehicle will turn the IG OFF automatically
when it has passed about 60 minutes with IG ON while the
shift lever is in P position. Therefore, make sure to move the
shift lever to N position before starting the reprogramming.
• The alarm sound will be heard if the door is fully closed with
IG ON while the shift lever is in Neutral position, on either of
the following conditions:
- The key is outside the vehicle
- The key battery is low

12

h)

Click on “Start”.

i)

While reprogramming, the screen shown on the below is displayed.
NOTE:
• As reprogramming completes within approximately 75 minutes, stay near the vehicle and DO NOT
allow any third parties to operate the vehicle or Techstream in order to prevent issues from
occurring. The following phenomena may be observed while reprogramming due to interrupted
communication. However, there is no problem.
- Vehicle proximity alarming sound.