Reprogram Highlander ECM Software

July 31, 2023
Some 2017-2018 Toyota Highlander vehicles with and without the start stop feature (and equipped with both old and new type DAT UA80 transmissions) may have a MIL on with DTC P07407E and/or P27567F.

Some 2017-2018 Toyota Highlander vehicles with and without the start-stop feature (and equipped with both old and new type DAT UA80 transmissions) may have a MIL on with DTC P07407E and/or P27567F. The ECM logic has been modified to reduce the possibility of this condition.

Note: a mismatched transaxle assembly and ECM software combination may result in a harsh shift or shift flare. If this occurs after the repair, additional ECM replacement and reprogramming will be required. Reprogram the ECM with the latest calibration.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

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