macho Posted January 5, 2009 Share Posted January 5, 2009 After dealer changed defective battery (under waranty) the mileage of my 08 ES350 changed. I used to get 29-30 on highway and 25-27 city highway combined, now I get 25 highway and 22-23 city highway combined. Can the change of battery made any changes to the computer settings ?. Quote Link to comment Share on other sites More sharing options...
dcfish Posted January 5, 2009 Share Posted January 5, 2009 After dealer changed defective battery (under waranty) the mileage of my 08 ES350 changed. I used to get 29-30 on highway and 25-27 city highway combined, now I get 25 highway and 22-23 city highway combined. Can the change of battery made any changes to the computer settings ?. Yes, The ECU has to re-learn your driving habits. ;) Quote Link to comment Share on other sites More sharing options...
macho Posted January 5, 2009 Author Share Posted January 5, 2009 After dealer changed defective battery (under waranty) the mileage of my 08 ES350 changed. I used to get 29-30 on highway and 25-27 city highway combined, now I get 25 highway and 22-23 city highway combined. Can the change of battery made any changes to the computer settings ?. Yes, The ECU has to re-learn your driving habits. ;) Thanks for the answer. boy boy I had to reset the seats settings, service warnings, tire pressure warning and radio settings. I wish that the dealer had warned me about all of those things and not to have to find something new every day. Quote Link to comment Share on other sites More sharing options...
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