T-SB-0087-21

T-SB-0087-21
October 1, 2021
High Transmission Fluid Temperature Warning
Message
Service
Category
Drivetrain
Section
Automatic Transmission/Transaxle
Market USA
Applicability
YEAR(S)
MODEL(S)
2019 - 2021
Tundra
ADDITIONAL INFORMATION
Introduction
Some 2019 – 2021 model year Tundra vehicles may exhibit a “High Transmission Fluid Temp”
warning message on the instrument cluster Multi-information Display (MID) when towing in
tow/haul mode at highway speeds. The Engine Control Module (ECM) (SAE term: Powertrain
Control Module/PCM) logic has been modified to address this drive mode condition. Follow the
Repair Procedure in this bulletin to address this condition.
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
800269
Reprogram ECM (PCM)
0.7
89661-#####*
87
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 Emissions 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.
© 2021 Toyota Motor Sales, USA
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High Transmission Fluid Temperature Warning Message
Parts Information
PART NUMBER
PART NAME
QTY
PREVIOUS
NEW
89661-0CS40
89661-0CS41
89661-0CW30
89661-0CS50
89661-0CS51
89661-0CW40
89661-0CS70
89661-0CS71
89661-0CS72
89661-0CW50
89661-0CS80
89661-0CS81
89661-0CS82
89661-0CW60
89661-0CT50
89661-0CW70
89661-0CT60
89661-0CW80
–
89661-0CT90
89661-0CW90
–
89661-0CU00
89661-0CX00
–
89661-0CV40
89661-0CX10
–
89661-0CV50
89661-0CX20
–
89661-0CV70
89661-0CX30
–
89661-0CV80
89661-0CX40
–
–
–
–
–
00451-00001-LBL
Computer, Engine Control
Authorized Modifications Labels
NOTE
 The ECM (PCM) should NOT be replaced as part of the Repair Procedure.
 Authorized Modifications Labels may be ordered in packages of 25 from the Materials
Distribution Center (MDC) through Dealer Daily – Parts – Dealer Support Materials Orders.
 All vehicle configurations are NOT available, this service bulletin will be updated as s/w versions
become available.
© 2021 Toyota Motor Sales, USA
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High Transmission Fluid Temperature Warning Message
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream ADVI*
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.
 Software version 16.20.027 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
Battery Diagnostic Tool*
DCA-8000P_T
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
Calibration Information
STARTING SYSTEM
MODEL YEAR
DRIVETRAIN
FUEL TANK
(GALLONS)
CALIBRATION ID
ENGINE
2WD
26
4WD
3UR-FE
Key
2019
2WD
PREVIOUS
NEW
30CP4000
30CP4100
30CT7000
30CP4001
30CP4101
30CT7001
30CP5000
30CP5100
30CT8000
30CP5001
30CP5101
30CT8001
30CP7001
30CP7101
30CP7201
30CT9001
38
4WD
26
© 2021 Toyota Motor Sales, USA
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High Transmission Fluid Temperature Warning Message
Calibration Information (continued)
STARTING SYSTEM
Key
MODEL YEAR
2019
DRIVETRAIN
CALIBRATION ID
FUEL TANK
(GALLONS)
ENGINE
38
3UR-FBE
PREVIOUS
NEW
30CP8001
30CP8101
30CP8201
30CU0001
30CQ6000
30CU2000
30CQ6001
30CU2001
30CQ9000
30CU3000
4WD
30CQ9001
30CU3001
2WD
30CR0000
30CU4000
30CR0001
30CU4001
2WD
30CS9000
30CU6000
4WD
30CS9001
30CU6001
30CT1000
30CU7000
30CT1001
30CU7001
30CT2000
30CU8000
30CT2001
30CU8001
4WD
2WD
Push
38
4WD
2WD
26
2020
Key
4WD
38
3UR-FE
Push
2WD
2021
26
4WD
Key
2WD
38
4WD
Repair Procedure
1. Does the vehicle exhibit a “High Transmission Fluid Temp” warning message on the
instrument cluster MID when towing in tow/haul mode at highway speeds?

YES — Continue to step 2.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2021 Toyota Motor Sales, USA
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High Transmission Fluid Temperature Warning Message
Repair Procedure (continued)
2. Use Techstream to confirm if the ECM (PCM) calibration has been updated and check for the
Authorized Modifications Label affixed to the vehicle in the location shown below.
Is the calibration ID listed in Techstream and on the label the latest ECM (PCM) calibration?

YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.

NO — Continue to step 3.
Figure 1. Location of Authorized Modifications Label on 2019 – 2021 Tundra
TOYOTA MOTOR CORPORATION
AUTHORIZED MODIFICATIONS
THE FOLLOWING MODIFICATIONS HAVE BEEN MADE:
1
2
THESE MODIFICATIONS HAVE BEEN APPROVED
AS APPROPRIATE BY EPA AND CARB
3
DEALER CODE:
CHANGE AUTHORITY:
4
DATE:
5
1
Replacement ECM (PCM) Part Number
e.g., 89661-0CW30
4
Date Completed
2
New Calibration ID e.g., 30CT7000
5
This SB Number
3
Dealer Code
© 2021 Toyota Motor Sales, USA
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High Transmission Fluid Temperature Warning Message
Repair Procedure (continued)
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 T-SB-0134-16, Techstream ECU Flash Reprogramming
Procedure, and flash the ECM (PCM) with the NEW calibration file update.
4. Prepare and install the Authorized Modifications Label.
A. Using a permanent marker, enter the following information on the label:

ECM (PCM) 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 onto the vehicle at the location shown in
Figure 1. The Authorized Modifications Label is available through the MDC,
P/N 00451-00001-LBL.
5. Test-drive the vehicle to confirm proper operation.
© 2021 Toyota Motor Sales, USA