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No power to interior fuse box

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Deucedd, Jan 30, 2021.

  1. Jan 30, 2021 at 4:12 PM
    #1
    Deucedd

    Deucedd [OP] Member

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    I have no power for the climat control, windows, washer fluid and abs system . It looks like I've lost power going to the fuse box underneath the dash. Is there a realay or fuse that controls the power going to it? Or is the box itself done? Any help would be appreciated. 2016 tacoma
     
  2. Jan 30, 2021 at 4:13 PM
    #2
    brandon78lusch

    brandon78lusch Well-Known Member

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    Do you have a multimeter?
     
  3. Jan 30, 2021 at 4:14 PM
    #3
    Skydvrr

    Skydvrr IG: @kalopsianick

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    Didju check the fuses under the kick panel? Were u messing around w the head unit? I was once and I popped a fuse w the same symptoms.
     
  4. Jan 30, 2021 at 4:30 PM
    #4
    Deucedd

    Deucedd [OP] Member

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    No multimeter. Last year I lost the climate control but fixed it with new fuses. This time I seem to have lost everything coming off the interior panel. The fuses seem to be ok unless I'm missing something. I did notice that there was a 30a fuse just above the box. Not sure what it's for tho
     
  5. Jan 30, 2021 at 6:49 PM
    #5
    Homiec

    Homiec Well-Known Member

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    Maybe this will help. Attached is the fuse list for under the hood and under the dash with all the circuits they cover. Also attached is a top-level schematic that goes from the battery to the fuses. The fuses in the grey boxes in the schematic are under the dash. If you start at the battery you'll see a few fuses under the hood feed the dash fuse box. A 120A fuse under the hood labeled "120A J/B ALT" seems to feed a lot of the under dash fuses.
     

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  6. Jan 30, 2021 at 7:10 PM
    #6
    caribe makaira

    caribe makaira Well-Known Member

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    upload_2021-1-30_23-10-30.jpg
    Remove it, place a new one. Verify.
     
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  7. Jan 30, 2021 at 7:17 PM
    #7
    Tacomike18

    Tacomike18 Well-Known Member

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    Not sure it this helps but there are fuses under the fuse box that can blow causing the entire fuse box to not get any power.
    I popped a few while changing batteries.
     
  8. Jan 30, 2021 at 8:50 PM
    #8
    Homiec

    Homiec Well-Known Member

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    That's a good put. Looks like that fuse feeds the coil side of the relays for the circuits he's having issues with.
     
  9. Jan 31, 2021 at 8:05 AM
    #9
    Deucedd

    Deucedd [OP] Member

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    I replaced he 5A fuse but still no luck. I'll try replacing the 120A fuse under the hood next, just have to wait for the dealership to open to get the fuse. Thanks for all the suggestions so far
     
  10. Jan 31, 2021 at 8:06 AM
    #10
    caribe makaira

    caribe makaira Well-Known Member

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    That should be done at the dealership. It's not a pull out and replace fuse. The fuse/relay box needs to be opened and bolts holding it in removed.
     
  11. Jan 31, 2021 at 8:07 AM
    #11
    Deucedd

    Deucedd [OP] Member

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    Ok. Thank you
     
  12. Jan 31, 2021 at 8:53 AM
    #12
    caribe makaira

    caribe makaira Well-Known Member

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  13. Feb 4, 2021 at 8:16 PM
    #13
    Deucedd

    Deucedd [OP] Member

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    Thanks for all the replies. I brought the truck in and the mechanic figured it was the rear bsm harness causing the problem. He said it was corroded and that's what was causing the fuses to blow. He temporarily fixed by tapping up the cable.To replace it they want a ridiculous amount of money, $2700 with labour. I think I'll go with out. I asked about cutting the cable but he didn't think it was a good idea. It's no longer -25°c, but still nice to have heat
     
  14. Feb 26, 2021 at 7:02 PM
    #14
    Deucedd

    Deucedd [OP] Member

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    Well the problem is back. This time it's just the climate control that's out. Fuse keeps blowing right away. Does anyone know if its possible to remove the rear blindside monitoring system? Can the cable just be cut?
     

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