L-SB-0001-18

L-SB-0001-18
January 22, 2018
Techstream ECU Flash Reprogramming Procedure
Service
Category
Engine/Hybrid System
Section
Emission Control
Market USA
Applicability
YEAR(S)
MODEL(S)
2001 - 2018
CT200H, ES300H, ES330,
ES350, GS F, GS200T,
GS300, GS350, GS430,
GS450H, GS460, GX460,
GX470, HS250H, IS F,
IS200T, IS250, IS250C,
IS300, IS350, IS350C,
LC500, LC500H, LFA,
LS430, LS460, LS500,
LS500H, LS600H, LX470,
LX570, NX200T, NX300,
NX300H, RC F, RC200T,
RC300, RC350, RX300,
RX330, RX350, RX400H,
RX450H, SC430
ADDITIONAL INFORMATION
SUPERSESSION NOTICE
The information contained in this bulletin supersedes Service Bulletin No. L-SB-0021-14.
 Applicability has been updated to include applicable 2018 models and 2016 – 2018 model year
RC 300 and 2015 – 2018 model year RC 350 vehicles.
 Applicability has been updated to exclude 2001 – 2003 model year ES 300 vehicles.
Service Bulletin No. L-SB-0021-14 is obsolete and any printed versions should be discarded.
Be sure to review the entire content of this bulletin before proceeding.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Introduction
Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without
replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as
field-fix procedures described in individual Service Bulletins. This bulletin details the Techstream
ECU flash reprogramming process and outlines the use of TIS and the Calibration Update Wizard
(CUW). Flash calibration updates can only be applied to the vehicle/ECU combination for which
they are intended. ECUs have internal security that will not allow them to be programmed with
another ECU’s information.
NOTE
ECU is a Lexus term used to describe integrated computerized devices responsible for managing the
operation of a system or subsystem. For the purposes of this bulletin, the term ECU is used as a generic
label for the following SAE J1930 standard references:




Powertrain Control Module (PCM)
Engine Control Module (ECM)
Transmission Control Module (TCM)
Any other Lexus-specific control unit
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
N/A
Not Applicable to Warranty
–
–
–
–
Parts Information
PART NUMBER
PREVIOUS
NEW
00451-00001-LB L
PART NAME
QTY
Authorized Modifications Label
1
NOTE
Authorized Modifications Labels may be ordered in packages of 25 from the Materials
Distribution Center (MDC) through Dealer Daily – Parts – Dealer Support Materials Orders.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream 2.0*
Techstream Lite
QTY
TS2UNIT
ADE
TSLITEPDLR01
Techstream Lite (Green Cable)
1
TSLP2DLR01
* Essential SST.
NOTE
 Only ONE of the Techstream units listed above is required.
 Software version 12.20.024 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer
Equipment (ADE) at 1-800-368-6787.
 Use Techstream or an approved J2534 interface to perform flash reprogramming updates. Visit
techinfo.toyota.com for more information regarding J2534 reprogramming.
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
GR8 Battery Diagnostic Station*
00002-MCGR8
1
* Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
Techstream Preparation – Selecting the Correct VIM
Techstream software requires a VIM selection before it can be used for reprogramming.
Perform the following:
1. Select Setup from the Techstream Main Menu screen.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Techstream Preparation – Selecting the Correct VIM (Continued)
2. Select VIM Select from the Setup drop-down menu.
Figure 1.
3. Select the correct interface setup from the drop-down list.
 If using Techstream 2.0, select MongoosePro MFC.

If using Techstream Lite, select Mongoose MFC, MongoosePro MFC, or
MongoosePro MFC2 (green) depending on the cable being used.
NOTE
A Mongoose driver MUST be installed before Mongoose selections will be available.
See TIS – Diagnostics – Scantool for additional information.
4. Click OK.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Process Overview
Techstream ECU flash reprogramming is a four-step process:
1. Verify the vehicle’s applicability for recalibration and locate the desired calibration file by
performing the Techstream Health Check function.
NOTE
Techstream will automatically search TIS for the appropriate Service Bulletin using the current
calibration ID from the vehicle. Calibration file links can be found embedded in the corresponding
Service Bulletin.
2. Connect the GR8 Battery Diagnostic Station using Power Supply Mode ONLY.
The GR8 Battery Diagnostic Station includes a Power Supply Mode to help maintain battery
voltage at 13.5V during ECU reprogramming.
NOTICE
 ECU damage may occur if the correct battery charger and mode setting is NOT used.
 Refer to “Vehicle Reprogramming Tips” for other approved chargers, located at TIS –
Diagnostics – Reprogramming – Calibrations – Reference Documents.
3. Locate the appropriate calibration ID and reprogram the vehicle ECU with Techstream.
Techstream uses the CUW application to open calibration files and facilitate the ECU flash
reprogramming process.
4. Attach the Authorized Modifications Label.
Modifications to ECU calibrations MUST be recorded and properly displayed on the vehicle
using the Authorized Modifications Label.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure
1. Verify the vehicle’s applicability for recalibration and locate the desired calibration file.
A. Connect Techstream and establish a vehicle connection.
B. Click the Health Check button on the System Select tab.
Figure 2.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
C. Choose the desired ECU group(s) in the Health Check dialog box. Then click Next.
Figure 3.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
D. Click Continue to view the Health
Check results.
Figure 4.
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
E. Available calibration updates are indicated by a Yes link in the Update column. Click the
Yes link to access the appropriate Service Bulletin on TIS.
NOTE
 Note ANY DTCs stored in systems that will be flash reprogrammed.
 Clicking the Yes link will automatically launch TIS and perform a calibration search.
Figure 5.
F. Log in to TIS. (If already logged in, skip this step.)
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
G. To review the Service Bulletin and access the calibration file, click the Service Bulletin link
in the Document Title column of the calibration search result portlet.
NOTE
ONLY Lexus Certified Technicians and other authorized users may access calibration files.
Figure 6.
2. Connect the GR8 Battery Diagnostic Station.
NOTE
Refer to “Vehicle Reprogramming Tips” for other approved chargers, located at TIS –
Diagnostics – Reprogramming – Reference Documents.
A. Connect the GR8 Battery Diagnostic Station to the vehicle and turn it ON.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
B. Select Pwr Supply Mode by following the screen flow below.
NOTICE
 ECU damage may occur if the correct battery charger and mode setting is NOT used.
 Power Supply Mode is used to maintain battery voltage at 13.5V while flash
reprogramming the vehicle.
 For details on how to use the GR8 Battery Diagnostic Station, refer to the
“GR8 Instruction Manual” located at TIS – Diagnostics – Tools & Equipment –
Battery Diagnostics.
Figure 7.
1
Confirm the Power Supply Mode is Selected
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
3. Click the appropriate calibration ID and reprogram the vehicle’s ECU with Techstream.
A. AFTER reviewing the procedures outlined in the selected Service Bulletin, click the
appropriate calibration ID link by matching the vehicle’s current calibration ID to the
previous calibration ID in the Calibration Identification Chart.
NOTE
 Calibration files are embedded as live links in the Service Bulletin.
 Some vehicles require special preparation — please review the selected Service
Bulletin carefully.
Figure 8.
B. Click Open to load the calibration
file information.
Figure 9.
NOTE
Techstream pulls calibration files as
needed to ensure the latest calibration file
is used. Do NOT save calibrations locally
on the hard drive or other media.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
NOTICE
Errors during the flash reprogramming process can permanently damage the vehicle ECU.
Minimize the risk by following the steps below.
 Battery voltage MUST NOT FALL BELOW 11.8V during reprogramming. Confirm b attery
voltage is higher than 11.8V, but be sure voltage DOES NOT RISE ABOVE 16.0V
during reprogramming.
 Turn OFF ALL vehicle accessories (e.g., audio system, A/C, interior lights, DRL). Do NOT
add to or significantly change the vehicle’s electrical load w hile reprogramming.
 Confirm the hood is open and ensure under-hood temperature does NOT exceed
158°F (70°C).
 Confirm cable connections between the vehicle and Techstream are secure.
 Do NOT disconnect or turn off Techstream or vehicle ignition during reprogramming.
 Set parking brake.
 Complete ALL flash calibration updates provided for each ECU.
 If the battery’s State-Of-Charge or capacity is in question, test with a digital battery
system analyzer, SST No. 00002-V8150-KIT, and follow Service Bulletin No. L-SB-0108-17,
“Battery Maintenance During PDS,” or the appropriate “Maintenance for HV & Auxiliary
Batteries” Service Bulletins.
 The GR8 Battery Diagnostic Station MUST be used in Power Supply Mode to maintain
battery voltage at 13.5V while flash reprogramming the vehicle. For details on how to use
the GR8 Battery Diagnostic Station, refer to the “GR8 Instruction Manual” located at TIS –
Diagnostics – Tools & Equipment – Battery Diagnostics.
C. Click Next to start the calibration
update process.
Figure 10.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
D. Confirm the following:
 PC is connected to VIM.
 VIM is connected to DLC3 connector.
 Ignition is ON and engine is OFF or Ready OFF (hybrid vehicles).
Then click Next.
Figure 11. Using Techstream 2.0 or Techstream Lite
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
E. Verify correct current calibration and NEW calibration information. Then click Next.
NOTE
 The total number of calibration IDs in the calibration file corresponds to the number of
reprogrammable processors in the ECU.
 Each calibration file may contain up to three separate calibrations.
 Figure 15 shows an example of the update procedure for a two-processor ECU.
Figure 12.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
F. Turn ignition OFF. Then click Next.
Figure 13.
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
G. Confirm the following:
 PC is connected to VIM.
 Ignition is ON and engine is OFF or Ready OFF (hybrid vehicles).
 Hood is open.
 ALL accessories are OFF.
 Battery voltage is above 11.8V.
NOTICE
Verify the vehicle is connected to a battery charger BEFORE continuing. If battery
voltage falls below 11.8V, ECU damage may occur.
Then click Start.
Figure 14.
NOTE
If the key cycle is NOT done properly, reprogramming will stop at 10% and Cal 1 will fail
to load.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
H. Do NOT disturb the vehicle during flash reprogramming.
NOTE
 ECU flash reprogramming may take anywhere from 3 – 30 minutes per calibration file.
 Reprogramming time will vary depending on model and ECU communication protocol.
Vehicles using CAN communication protocol will reprogram much faster (2 – 7 minutes).
Figure 15.
NOTE
 If the vehicle requires ONLY ONE calibration update, go to substep N.
 If the vehicle requires a SECOND calibration update, continue as follows:
 For serial communication vehicles, continue to substep I.
 For CAN communication vehicles, go to substep K.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
I.
When Cal 1 has completed the update process, turn the ignition OFF for a minimum of
10 seconds. Then click Next.
Figure 16.
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
J. Turn the ignition to the ON position. Then click Start.
Figure 17.
NOTE
If key cycle is NOT done properly, reprogramming will stop at 10% and Cal 2 will fail to load.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
K. Do NOT disturb the vehicle during flash reprogramming.
Figure 18.
L. Turn the ignition OFF for a minimum of 10 seconds. Then click Next.
Figure 19.
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
M. Turn the ignition to the ON position. Then click Next.
Figure 20.
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
N. Confirm ALL calibrations were updated as specified in the Service Bulletin. Then
click Finish.
Figure 21.
NOTE
On some models, DTCs may set as a result of reprogramming. If DTCs are present, clear
codes and run the Health Check again. Troubleshoot ANY remaining current, pending, or
history codes. Permanent codes will NOT be cleared using Techstream. Permanent codes do
NOT illuminate the MIL and do NOT require troubleshooting. They will clear during normal
driving once the Universal Trip Drive Pattern is performed.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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Techstream ECU Flash Reprogramming Procedure
Operation Procedure (Continued)
4. Attach the Authorized Modifications Label.
A. Using a permanent marker or ballpoint pen, complete the Authorized Modifications Label
and attach it to the vehicle. The Authorized Modifications Label is available through the
MDC, P/N 00451-00001-LBL.
Figure 22.
1
2
3
4
5
1
Replacement ECU Part Num ber
4
Date Com pleted
2
New Calibration ID
5
Service Bulletin or Campaign Num ber
3
Dealer Code
B. Attach the label under the hood in the location determined by the specific Service Bulletin
or Campaign.
NOTE
Wait 60 – 90 seconds for ink to set before handling.
© 2018 Lexus, a division of Toyota Motor Sales, USA