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Toyota Tundra 4WD V8-5.7L (3UR-FBE) Flex Fuel (2011)01 · Relays and Modules
01 · Diagnostics

Engine Controls - Techstream(R) ECU Re-Flash Procedure (Engine Control Module)

Make
Toyota
Model
Tundra 4WD
Engine
V8-5.7L (3UR-FBE) Flex Fuel
Year
2011
Section
Engine Control Module › Technical Service Bulletins › Engine Controls - Techstream(R) ECU Re-Flash Procedure
Relays and ModulesEngine Controls - Techstream(R) ECU Re-Flash Procedure · page 1 of 15
Engine Controls - Techstream(R) ECU Re-Flash Procedure (Engine Control Module) – Toyota Tundra 4WD V8-5.7L (3UR-FBE) Flex Fuel (2011)

Engine Control Module: Technical Service Bulletins
Engine Controls - Techstream(R) ECU Re-Flash Procedure

T-SB-0064-10

February 4, 2010

Techstream ECU Flash Reprogramming Procedure

Service Category
Engine/Hybrid System

Section
Engine Control

Market
USA

Applicability

TSB SUPERSESSION NOTICE

The information contained in this TSB supersedes TSB No. SS002-07.

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Applicability has been updated to include 2009 - 2011 model year Toyota vehicles.

^

A new section, Techstream Preparation, has been added.

^

Techstream Lite has been added as an option in Required Tools & Materials.

^

Process Overview and Operation Procedure sections have been updated.

TSB No. SS002-07 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before
proceeding.

Introduction

Flash reprogramming allows the 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 use of the Technical Information System (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.

ECU

Electronic Control Unit (ECU) is a Toyota 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:

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Powertrain Control Module (PCM)

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Parts & tools for this job For 2011 Toyota Tundra 5.7L

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