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Distance to empty indicator changed with new battery

Discussion in '2.5 Gen Tundras (2014-2021)' started by Harlan, Apr 22, 2020.

  1. Apr 22, 2020 at 4:53 AM
    #1
    Harlan

    Harlan [OP] New Member

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    Something weird happened. I just replaced my battery (95K miles). Started engine and it shut down. Started again and ran normally. OK. Something about the fuel system according to mechanic. Went to fill up with gas and distance to empty indicator shot up from around 300 miles remaining (which it's done since I owned it and I always thought seemed to low) to 425.
    It was like replacing the battery reboot the computer. Is that what happened?

    Thanks in advance.
     
  2. Apr 22, 2020 at 5:14 AM
    #2
    shawn474

    shawn474 New Member

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    MoCo, Maryland
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    It will take awhile to adjust; after replacing or disconnecting the battery it will rest to default and normalize / readjust over the course of a week or so.
     
  3. Apr 22, 2020 at 6:13 AM
    #3
    Tundra234

    Tundra234 New Member

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    Alot of them
    It will readjust as mentioned, and it's only an estimate. Most dont even pay attention to it. As far as starting, it is normal for the first start to immediately shut down after a battery is reconnected.
     
  4. Apr 22, 2020 at 6:16 AM
    #4
    Danman34

    Danman34 New Member

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    It just reset the ecu due to power interruption. It will level back out to what it was before after a couple fill ups. Don’t get your hopes up. A miracle did not occur.
     
    COMiamiFan likes this.
  5. Apr 22, 2020 at 6:45 AM
    #5
    JeremyGSU

    JeremyGSU New Member

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    As others said, it resets the computer when you remove the Negative.

    However, I found it takes awhile (many tanks) to go back to normal and I was averaging around 3,500 miles per month before I sold the truck.
     
  6. Apr 22, 2020 at 7:37 AM
    #6
    johnxmccoy

    johnxmccoy New Member

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    2019 Crew Max
    So if we want better fuel efficiency, just replace battery or remove negative battery connection!
    Nice!
     
    COMiamiFan and Voyagermike like this.
  7. Apr 22, 2020 at 8:25 AM
    #7
    Netmonkey

    Netmonkey Don't be a Dumbass

    Joined:
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    Georgetown, TX
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    2016 Texas Edition, 5.7, CM, MGM
    Icon stage 2 lift, 295 60 20 nitto ridge grapplers, fuel kranks, TRD dual exhaust, TRD rear sway bar
    that is completely normal. to avoid that, you can use one of these:
    https://www.amazon.com/gp/product/B07QV2QFTC/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

    it will save all your radio presets, your ecu settings, and any custom tune (which is why i bought it).

    it works great.
     
    NewImprovedRon likes this.

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