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 MANUALSLEXUS2012IS 250C V6-2.5L (4GR-FSE)REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLETESTING AND INSPECTIONPROGRAMMING AND RELEARNING
2012 Lexus IS 250C V6-2.5L (4GR-FSE)
Programming and Relearning
2012 Lexus IS 250C V6-2.5L (4GR-FSE)SECTION Programming and Relearning
A960E AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM: INITIALIZATION
1. RESET MEMORY
NOTICE:
* Perform the RESET MEMORY (AT initialization) when replacing the automatic transmission assembly, engine assembly or ECM.
* The RESET MEMORY can be performed only with the Techstream.
HINT
The ECM memorizes the condition that the ECT controls the automatic transmission assembly and engine assembly according to those characteristics. Therefore, when the automatic transmission assembly, engine assembly, or ECM 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) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG) position.
(d) Turn the Techstream main switch on.
(e) Enter the following menu: Powertrain / ECT / Utility / Reset Memory. Then, press "Next".
(f) Perform the reset memory procedure from the main menu.
CAUTION:
After performing the RESET MEMORY, be sure to perform the ROAD TEST Road Test described earlier.
HINT
The ECM is learned by performing 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.