L-SB-0109-17

L-SB-0109-17
Rev1
February 8, 2017
ECM Calibration: Hesitation Concerns
Service
Category
Engine/Hybrid System
Section
Engine Control
Market USA
Applicability
YEAR(S)
MODEL(S)
2016 - 2017
RX350
ADDITIONAL INFORMATION
REVISION NOTICE
April 4, 2017 Rev1:
The Warranty Information section has been updated.
Any previous printed versions of this bulletin should be discarded.
Introduction
Some 2016 – 2017 model year RX 350 vehicles may exhibit a hesitation in one or more of the
following conditions:



Accelerating from a stop.
Passing during freeway/city driving.
Low speed reacceleration.
The Engine Control Module (ECM, SAE term: Powertrain Control Module/PCM) calibration has
been revised to address these conditions.
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs
shown below.
WMI
DRIVETRAIN
2WD
2T2
4WD
JTJ
TRIM
PRODUCTION CHANGE EFFECTIVE VIN
Non F Sport
2T2ZZMCA#HC039578
F Sport
2T2ZZMCA#HC040068
Non F Sport
2T2BZMCA#HC060399
F Sport
2T2BZMCA#HC060921
Non F Sport
JTJBZMCA#H2015162
© 2017 Lexus, a division of Toyota Motor Sales, USA
Page 1 of 5
L-SB-0109-17
Rev1
February 8, 2017
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ECM Calibration: Hesitation Concerns
Warranty Information
OP CODE
DESCRIPTION
EG1637
Reprogram ECM (PCM) Engine
TIME
OFP
T1
T2
0.4
89661-0E760
89661-0E761
89661-0EA40
89661-0E810
89661-0E811
89661-0E770
89661-0E771
89661-48N70
89661-48N71
04
99
APPLICABLE WARRANTY
This repair is covered under the Lexus Federal Emission Warranty. This warranty is in effect for
96 months or 80,000 miles, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
Parts Information
WMI
DRIVETRAIN
2WD
2T2
4WD
JTJ
–
–
TRIM
PART NUMBER
PREVIOUS
NEW
Non F Sport
89661-0E760
89661-0E761
89661-0E762
F Sport
89661-0EA40
89661-0EA41
Non F Sport
89661-0E810
89661-0E811
89661-0E812
F Sport
89661-0E770
89661-0E771
89661-0E772
Non F Sport
89661-48N70
89661-48N71
89661-48N72
–
00451-00001-LBL
PART NAME
QTY
Computer, Engine Control
(ECM/PCM)
–
Authorized Modification Labels
1
NOTE
The ECM (PCM) should NOT be replaced as part of the Repair Procedure.
Authorized Modification Labels may be ordered in packages of 25 from the Materials
Distribution Center (MDC) through Dealer Daily – Parts – Dealer Support Material Order.
© 2017 Lexus, a division of Toyota Motor Sales, USA
L-SB-0109-17
Rev1
February 8, 2017
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ECM Calibration: Hesitation Concerns
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream 2.0*
Techstream Lite
QTY
TS2UNIT
ADE
TSLITEPDLR01
Techstream Lite (Green Cable)
1
TSLP2DLR01
NOTE
Only ONE of the Techstream units listed above is required.
Software version 12.00.125 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer
Equipment (ADE) at 1-800-368-6787.
The Diagnostic Tester is NOT recommended for flash reprogramming.
Please 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
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
* Essential SST.
Calibration Information
CALIBRATION ID
WMI
DRIVETRAIN
TRIM
PREVIOUS
NEW
Non F Sport
896630E36100
896630E36200
896630E36300
F Sport
896630E54000
896630E54100
Non F Sport
896630E41000
896630E41100
896630E41200
F Sport
896630E37100
896630E37200
896630E37300
Non F Sport
896630E41000
896630E41100
896630E41200
2WD
2T2
4WD
JTJ
© 2017 Lexus, a division of Toyota Motor Sales, USA
L-SB-0109-17
Rev1
February 8, 2017
Page 4 of 5
ECM Calibration: Hesitation Concerns
Repair Procedure
1. Does the vehicle exhibit standing start hesitation, passing hesitation during freeway/city driving
and/or low speed area reacceleration hesitation?

YES — Continue to step 2.

NO —This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
2. Check for the Authorized Modifications Label affixed to the vehicle in the location shown below.
Confirm if the ECM (PCM) calibration has been updated.
Is the calibration ID listed NOT the latest ECM (PCM) calibration?

YES — Continue to step 3.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
Figure 1. Location of Authorized Modifications Label on 2016 – 2017 RX 350
1
Replacement ECM (PCM) Part Number
(i.e., 89661-0E762)
4
Date Completed
2
New Calibration ID (i.e., 896630E36300)
5
This SB Number
3
Dealer Code
© 2017 Lexus, a division of Toyota Motor Sales, USA
L-SB-0109-17
Rev1
February 8, 2017
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ECM Calibration: Hesitation Concerns
Repair Procedure (Continued)
3. Flash reprogram the ECM (PCM).
NOTE
The GR8 Battery Diagnostic Station MUST be used in Power Supply Mode to maintain
battery voltage at 13.5 volts while flash reprogramming the vehicle.
For details on how to use the GR8 Battery Diagnostic Station, refer to the GR8 Instruction
Manual located on the Technical Information System (TIS), Diagnostics – Tools &
Equipment – Battery Diagnostics.
Follow the procedures outlined in the Service Bulletin L-SB-0021-14, “Techstream ECU Flash
Reprogramming Procedure”, and flash the ECM (PCM) with the NEW calibration file update.
NOTE
Certain options may become unavailable during software update. Perform a 12V battery reset
on the vehicle AFTER software update.
4. Prepare and install the Authorized Modifications Label.
A. Using a permanent marker, enter the following information on the label:

ECM part number [Refer to the Parts Information section for the NEW
PART NUMBER]

Calibration ID(s) [Refer to the Calibration Information section for the
NEW CALIBRATION ID]
Dealer Code
Repair Date
Change Authority [This bulletin number]



B. Install the Authorized Modifications Label to the vehicle at the location shown in
Figure 1. The Authorized Modifications Label is available through the MDC,
P/N 00451-00001-LBL.
5. Start the engine and warm it up to normal operating temperature and test drive to confirm
proper vehicle operation.
© 2017 Lexus, a division of Toyota Motor Sales, USA