TSB008723

T-SB-0087-23
November 3, 2023
Hesitation/Non-linear Acceleration From a Stop
Service
Category
Engine/Hybrid System
Section
Engine Control
Market USA
Applicability
YEAR(S)
MODEL(S)
2023
Highlander
ADDITIONAL INFORMATION
Introduction
Some 2023 model year Highlander vehicles may exhibit one or both of the following conditions:

Hesitation when accelerating from a stop.

Non-linear acceleration from a stop or rolling stop with steady throttle.
The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been
modified to address these conditions. Follow the Repair Procedure in this bulletin to address
these conditions.
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EL2316
Reprogram the ECM (PCM)
0.7
89661-#####*
04
74
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired
by searching for the parts in the Electronic Parts Catalog using the VIN filter.
APPLICABLE WARRANTY
 This repair is covered under the Toyota 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.
© 2023 Toyota Motor Sales, USA
Page 1 of 3
T-SB-0087-23
November 3, 2023
Page 2 of 3
Hesitation/Non-linear Acceleration From a Stop
Parts Information
PART NUMBER
PREVIOUS
NEW
896610EM5000
896610EM5100
896610EM6000
896610EM6100
896610EM7000
896610EM7100
PART NAME
QTY
Computer, Engine Control
(ECM/PCM)
–
NOTE
The ECM (PCM) should NOT be replaced as part of the Repair Procedure.
Required Tools & Equipment
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Battery Diagnostic Tool
DCA-8000P T
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVI*
PART NUMBER
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
1
Techstream Lite
TSLITEPDLR01
Techstream Lite (Green Cable)
TSLP2DLR01
*Essential SST.
NOTE
 Only ONE of the Techstream units listed above is required.
 GTS+ software version 2023.03.002.02 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
© 2023 Toyota Motor Sales, USA
T-SB-0087-23
November 3, 2023
Page 3 of 3
Hesitation/Non-linear Acceleration From a Stop
Calibration Information
CALIBRATION ID
MODEL
Highlander
DRIVETRAIN
PREVIOUS
NEW
FF_With
Start/Stop
896630EG3000
896630EG3100
FF_Without
Start/Stop
896630EG4000
896630EG4100
AWD
896630EG5000
896630EG5100
Repair Procedure
1. Confirm the condition(s) exist(s).
Does the vehicle exhibit a hesitation when accelerating from a stop and/or a non-linear
acceleration from a stop or rolling stop with steady throttle?

YES — Continue to step 2.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Use GTS+ to confirm if the ECM (PCM) calibration has been updated.
Is the calibration ID listed in GTS+ the latest ECM (PCM) calibration?

YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.

NO — Continue to step 3.
3. Flash reprogram the ECM (PCM).
NOTE
 The battery diagnostic tool 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 battery diagnostic station, refer to the DCA-8000 Instruction Manual
located at TIS – Diagnostics – Tools & Equipment – Battery Diagnostics.
Follow the procedures outlined in Service Bulletin T-SB-0057-23 GTS+ ECU Flash
Reprogramming Procedure, and flash the ECM (PCM) with the NEW calibration file update.
4. Clear ANY DTCs and test-drive the vehicle to confirm the condition has improved.
NOTE
The condition may immediately improve, BUT full effectiveness of the countermeasure software
may NOT be felt until the vehicle learned values are reset via regular driving of the vehicle.
© 2023 Toyota Motor Sales, USA