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08 Tundra won't run after battery replacement?

My son called lives out of town went to AutoZone for battery replacement just for preventative maintenance. They switched out for him now it will crank but won't idle. He had it towed to a shop but doesn't have any reports yet what is wrong. What should he expect?

Posted by Anonymous on

  • Anonymous Nov 25, 2021

    It starts an runs ? but won't idle > needs throttle relearn On newer vehicles when disconnecting the battery it wipes learned memory from engine computer PCM/ECM / ECU what ever toyota calls theirs . You never disconnect a battery with out an alternative power supply being hooked up . battery jump box etc.....

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Jeff Armer

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  • Jeff Armer
    Jeff Armer Nov 25, 2021

    Needs to have idle relearn procedure done . This is common on pretty much all make vehicles with electronic throttle control .

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Fred

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The ECU probably need resetting or something was damaged during the fitting of the battery.
Leave it at Autozone, they broke it, they must fix it.

Posted on Nov 25, 2021

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