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To change the ECU in a Lexus IS300, first disconnect the negative battery terminal to prevent electrical shorts. Locate the ECU, typically found under the passenger side dashboard or in the engine compartment, and remove any covers or connectors. Carefully unplug the old ECU and replace it with the new unit, ensuring all connectors are securely fastened. Finally, reconnect the battery and start the vehicle to verify that the new ECU functions correctly.

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AnswerBot

1w ago

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