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ECU Total Failure?

Discussion in '3rd Gen. Tacomas (2016+)' started by Prospetive_Tacoma, Mar 14, 2019.

  1. Mar 14, 2019 at 1:20 PM
    #1
    Prospetive_Tacoma

    Prospetive_Tacoma [OP] Active Member

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    Weathertech floor liners and Hondo knobs.
    My 2017 TRDOR Tacoma is in the shop after some electronic gremlins brought me to take it in. After a quick software update, they said it'd be good to go and I left. On my way home, on the highway, the screen and gauges all went blank, and the A/C fan stopped. It had been doing that all day, so it didn't worry me too much. Then the throttle completely cut out and the truck made a thumping noise twice. The pedal went to the floor with no resistance. I think the engine turned off, but can't be sure. The battery warning light came on and it sounded like the starter was ticking loudly. Then, everything came back on, and I pulled over. Called the dealer and drove it back to them, where it continued to have the screen, fan, and lights cut out, but not the engine problem again.

    I have 35,500 or so miles on it, and I'm glad this happened before the warranty ran out. The dealer had a specialist look at it, and said they're replacing the ECU. Is this a known fault? Should I be worried about collateral damage to other parts like the starter or flywheel? Are there other things they should check? I'd appreciate any thoughts or experience y'all may have. I'm just really hoping this will genuinely fix the problem for good since my warranty is about to run out.Thanks.
     
  2. Mar 14, 2019 at 1:21 PM
    #2
    JaCado

    JaCado Well-Known Member

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    Ruh roh shaggy!
     
  3. Mar 14, 2019 at 1:22 PM
    #3
    BlueFalconActual

    BlueFalconActual Some dude

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    I don’t know if this will make you feel better or worse but I’ve never heard of the ECU going out on these things unless you try to put in a tune incorrectly
     
  4. Mar 14, 2019 at 1:23 PM
    #4
    NunyaBizness

    NunyaBizness JBFC

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    Talk about lucky tho... 500miles out from not being warranty repaired. Phew
     
  5. Mar 14, 2019 at 1:23 PM
    #5
    JaCado

    JaCado Well-Known Member

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    Ovtune says you can brick the thing, but very rarely does it fry... he has brought back a couple that got bricked.
     
  6. Mar 14, 2019 at 1:24 PM
    #6
    NunyaBizness

    NunyaBizness JBFC

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    I still want to do ovtune eventually
     
    JaCado likes this.
  7. Mar 14, 2019 at 1:26 PM
    #7
    Prospetive_Tacoma

    Prospetive_Tacoma [OP] Active Member

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    Weathertech floor liners and Hondo knobs.
    Yeah, that's the part that blows my mind. I'd have driven that 500 miles in about a week and a half.
     
    NunyaBizness likes this.
  8. Mar 14, 2019 at 1:26 PM
    #8
    BlueFalconActual

    BlueFalconActual Some dude

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    Tom Cruise works in mysterious ways
     
    stun gun, ajm, lowtiderides and 3 others like this.
  9. Mar 14, 2019 at 1:26 PM
    #9
    Prospetive_Tacoma

    Prospetive_Tacoma [OP] Active Member

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    Weathertech floor liners and Hondo knobs.
    Hmmm. I hadn't tried to modify anything at all electronically.
     
  10. Mar 14, 2019 at 1:27 PM
    #10
    JaCado

    JaCado Well-Known Member

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    Bigger question is what gremlins were you having to begin with to take it in.... any mods to the electrical on the truck. Water coming in on the firewall?
     
    Flash1034 and sdsurfer like this.
  11. Mar 14, 2019 at 1:29 PM
    #11
    Prospetive_Tacoma

    Prospetive_Tacoma [OP] Active Member

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    Weathertech floor liners and Hondo knobs.
    The initial problem was that the stereo kept restarting every few minutes. Then, a few times, the gauges and A/C cut out too with it. It all happened suddenly. Started the day before yesterday and I took it right in.
     
    JaCado likes this.
  12. Mar 14, 2019 at 3:35 PM
    #12
    na8rboy

    na8rboy 18 DCLB Sport Cement

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    Another member, just had his ECU replaced also. Don't remember screen name, when I find it will post it. He kept making new post(4 or 5+) about it.
     
    JaCado likes this.
  13. Mar 14, 2019 at 3:39 PM
    #13
    JaCado

    JaCado Well-Known Member

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    shakerhood and na8rboy like this.
  14. Mar 14, 2019 at 3:39 PM
    #14
    Flash1034

    Flash1034 Well-Known Member

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    Sounds like a loose main harness connection.
     
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  15. Mar 14, 2019 at 6:41 PM
    #15
    Prospetive_Tacoma

    Prospetive_Tacoma [OP] Active Member

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    Weathertech floor liners and Hondo knobs.
    Man that’s a relief. Thanks for linking the language from the warranty.
     
  16. Mar 14, 2019 at 6:42 PM
    #16
    Prospetive_Tacoma

    Prospetive_Tacoma [OP] Active Member

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    Weathertech floor liners and Hondo knobs.
    I’ll check that post out. Hope it ended well.
     
  17. Mar 14, 2019 at 6:47 PM
    #17
    Prospetive_Tacoma

    Prospetive_Tacoma [OP] Active Member

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    Weathertech floor liners and Hondo knobs.
    Last edited: Mar 14, 2019
    JaCado likes this.
  18. Mar 14, 2019 at 6:48 PM
    #18
    JaCado

    JaCado Well-Known Member

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    He was something... plus old I think. Freaking out too. Entertaining, but a pain.
     
  19. Mar 14, 2019 at 7:49 PM
    #19
    shakerhood

    shakerhood Well-Known Member

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  20. Mar 14, 2019 at 7:55 PM
    #20
    JaCado

    JaCado Well-Known Member

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    I think there is a Chaplin at every Toyota dealership ;)
     
    shakerhood likes this.

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