T-SB-0006-22

T-SB-0006-22
February 4, 2022
LTA Malfunction Warning Message With DTC U013787
Service
Category
Engine/Hybrid System
Section
Cruise Control
Market USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2022
Tundra
VDS(s): KB5AA, KB5AB, KB5CD, KB5DA,
KB5DB, KB5GD
Introduction
Some 2022 model year Tundra SR grade vehicles may display a Multi-Information Display (MID)
warning message “LTA Malfunction – Visit Your Dealer” and Diagnostic Trouble Code (DTC)
U013787– “Lost Communication with Trailer Brake Control Module Missing Message” is set. (SR
grade vehicles are not equipped with Trailer Brake Control Module.) Follow the Repair Procedure
in this bulletin to address this condition.
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EL9066
Reflash Forward Recognition Camera and
Front Radar Sensor
0.9
8646C-0C130
87
74
APPLICABLE WARRANTY
 This repair is covered under the Toyota Basic Warranty. This warranty is in effect for 36 months
or 36,000 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.
© 2022 Toyota Motor Sales, USA
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February 4, 2022
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LTA Malfunction Warning Message With DTC U013787
Parts Information
PART NUMBER
PART NAME
QTY
8646C-0C130
Camera, Forward Recognition
–*
88210-0C070
Sensor Assy, Laser Cruise Control
–*
*Part calibration will be updated. Part replacement is NOT covered by this Service Bulletin.
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
PART NUMBER
Techstream ADVI*
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
Techstream Lite
TSLITEPDLR01
Techstream Lite (Green Cable)
TSLP2DLR01
*Essential SST.
NOTE
 Only ONE of the Techstream units listed above is required.
 Software version 16.30.011 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
Calibration Information
CALIBRATION ID
MODEL
PART
Radar
Tundra
PREVIOUS
NEW
8821F0C11000
8821F0C13000
8646F0C11000
Camera
8646G0C15000 / 8646F0C13000
8646G0C11000
© 2022 Toyota Motor Sales, USA
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February 4, 2022
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LTA Malfunction Warning Message With DTC U013787
Repair Procedure
1. Confirm the condition exists.
A. Using Techstream, perform Health Check.
B. Is DTC U013787– “Lost Communication with Trailer Brake Control Module Missing
Message” present in the Lane Control system?
 YES — Continue to substep C.
 NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
C. Is the calibration ID of the Forward Recognition Camera or Radar Sensor 8646F0C11000,
8646G0C11000, or 8821F0C11000?
 YES — Continue to step 2.
 NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Reflash the Forward Recognition Camera and Radar Sensor.
A. Reflash the Forward Recognition Camera to calibration ID
8646G0C15000 / 8646F0C13000.
B. Reflash the Front Radar to calibration ID 8821F0C13000.
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 tool, 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 Radar ECU with the NEW calibration file update.
3. Reset the Forward Recognition Camera and Radar Sensor.
A. Use the following link to run the reset tool.
Tundra: Reset Tool
B. Turn the ignition off.
4. Using Techstream, perform Health Check and clear ANY stored DTCs.
5. Confirm Lane Trace Assist and Radar Cruise Control function normally.
© 2022 Toyota Motor Sales, USA