All Power goes out on Start

[dliszews]

2016 GT, manual, 3k miles....I did not use it at all for the past year and had it on trickle charger. Battery is healthy and full electrical system in working order. I went to start it up today, and as I pushed in the clutch and hit the start button the entire electrical system shut down....save for the fuel pump. I had to disconnect battery to shut it down. I am going to go and check/replace fuses to see what happens. Looking for thoughts on what could have caused this and solutions. It ran flawlessly when I last drove it. Thanks for any help.

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[Optimum Performance]

Battery. It will run low load electrics but high current shuts it down. Put a load tester on it and 99% guarantee it will drop like a rock.

 

[Cobra Jet]

Also check for any rodent damages if the car sat that long without anyone near it... damn rodents like to chew up wiring harnesses....

 

[NKNEFA6]

I also have a 16, last year I went to start after winter and my dash lights kept flickering on and off, the pcm was humming, and the pump. It really freaked me out, changed the battery and was all good. Tip: if you store it, lock it twice (honk), apparently if it sits unlocked, it's in a "standby" mode. Your battery terminals will thank you.

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