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To reset the computer on a 1992 Lexus LS400, disconnect the negative battery terminal and leave it disconnected for about 10-15 minutes. This will allow the onboard computer to clear any stored trouble codes and reset the system. After waiting, reconnect the negative terminal, and start the vehicle to allow the computer to recalibrate. Make sure to check for any persistent issues that may have caused the need for a reset.

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3mo ago

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