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Quick question. Does changing battery reset electronics?

Discussion in '2.5 Gen Tundras (2014-2021)' started by Fishhead, Sep 23, 2020.

  1. Sep 23, 2020 at 6:50 AM
    #1
    Fishhead

    Fishhead [OP] New Member

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    does changing battery or unplugging to clean battery terminals erase the programmed stuff into the infotainment system. (Maintenance records/navigation destinations/radio stations/Bluetooth programming/etc?)

    reason I ask is that one vehicle I own keeps it and another dumps it.

    Im due for a new battery on my 2017 and I just was wondering if I can do a quick battery swap or am I going to take some time reprogramming everything.
     
  2. Sep 23, 2020 at 10:02 AM
    #2
    Platinum714

    Platinum714 A--A

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    I have disconnected the negative on my battery a bunch of times and all my stations come back and so too the maintenance records. I have the JBL HU.
     
  3. Sep 23, 2020 at 10:11 AM
    #3
    timsp8

    timsp8 Former Tundra owner for 13 years

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    JBL HU here too and radio keeps all settings after unplugging the battery. I don’t use nav on it so I’m not sure about that. My phone will connect so Bluetooth setting is saved.
     
  4. Jun 12, 2022 at 5:41 AM
    #4
    NewImprovedRon

    NewImprovedRon New Old Guy

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    Ron
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    If you have a trickle charger, I think you can hook the connectors up to your cables before disconnecting your battery to keep your settings. I have also seen battery powered maintainers that plug into a power port that do the same thing.
     
  5. Jun 12, 2022 at 5:46 AM
    #5
    Tundra234

    Tundra234 New Member

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    Alot of them
    On my 2020, I lost all of my radio stations (aftermarket) and haven't checked the rest of the radio yet since I have to disconnect it again to change the positive terminal. My dash brightness setting reset also.
     
  6. Jul 14, 2022 at 7:48 AM
    #6
    Netmonkey

    Netmonkey Don't be a Dumbass

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    Icon stage 2 lift, 295 60 20 nitto ridge grapplers, fuel kranks, TRD dual exhaust, TRD rear sway bar
    Yup, you can lose everything including custom engine tunes. To prevent that loss when you disconnect the battery, you can use one of these:

    https://www.amazon.com/Connector-Ve...c/9v+for+vehicle+battery,automotive,76&sr=1-2

    I have used that several times and it works great.
     
    Last edited: Jul 14, 2022

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