Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2009TUNDRA 2WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINTRANSMISSION CONTROL SYSTEMSTESTING AND INSPECTIONPROGRAMMING AND RELEARNING
2009 Toyota Tundra 2WD V8-4.7L (2UZ-FE)
Programming and Relearning
2009 Toyota Tundra 2WD V8-4.7L (2UZ-FE)SECTION Programming and Relearning
A750E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM (for 2UZ-FE): INITIALIZATION
INITIALIZATION
1. RESET MEMORY
NOTICE:
- Perform the Reset Memory (AT initialization) when replacing the automatic transmission assembly, valve body assembly or any of the shift solenoid valves.
- The Reset Memory can only be performed with the Techstream.
HINT: The ECM memorizes the control conditions of the automatic transmission assembly and engine assembly. Therefore, when the automatic transmission assembly, valve body assembly or any of the shift solenoid valves has been replaced, it is necessary to reset the memory so that the ECM can memorize the new information.
Reset procedure is as follows.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / ECT / Utility / Reset Memory.
NOTE: After performing the Reset Memory, be sure to perform the Road Test Road Test described earlier.
HINT: The ECM learns through the Road Test.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.