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fuel/mileage changed after battery replaced


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Last week I put a new battery in our 2010 IS 250. I know the tacho and speed indicator need to be adjusted but I'm surprised that fuel distance gauge has also changed. Prior to replacing battery it would read approx 750klms when I filled the tank now it indicates approx. 600klms after refill.  Maybe it will readjust after a few weeks of solid driving and tank refills. Does anyone know why there is a  significant change in the fuel/distance indicator after battery replacement?

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After you change your battery the ECU computer pretty much resets itself.

All your seat memory positions, fuel avgs, kms range will reset but nothing will change significantly.

It's just the computer trying to relearn.

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  • 2 weeks later...

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