ECU Total Failure?

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.

 

Ruh roh shaggy!

 

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

 

Talk about lucky tho... 500miles out from not being warranty repaired. Phew

 

Ovtune says you can brick the thing, but very rarely does it fry... he has brought back a couple that got bricked.

 

I still want to do ovtune eventually

 

Yeah, that's the part that blows my mind. I'd have driven that 500 miles in about a week and a half.

 

Tom Cruise works in mysterious ways

 

Hmmm. I hadn't tried to modify anything at all electronically.

 

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?

 

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.

 

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.

 

I know who you are thinking of...

https://www.tacomaworld.com/threads/broken-truck-trade-may-happen-by-dealer.595739/#post-19967215

 

Sounds like a loose main harness connection.

 

Man that’s a relief. Thanks for linking the language from the warranty.

 

I’ll check that post out. Hope it ended well.

 

Ha. Wow. Did he ever post anything actually valuable?

Really hoping this can be a real, permanent fix. Really like my truck.

 

He was something... plus old I think. Freaking out too. Entertaining, but a pain.

 

I think there is a Chaplin at every Toyota dealership