Sls 2012 loses all power randomly on start up

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Kizzzy2weeks
Posts: 3
Joined: Wed Mar 03, 2021 3:40 pm

:facepalm:

It's happened about 4 times in the past month. It's usually on a cold start.

I press start and the car loses all power, can't open the trunk even, the brake pedal goes stiff just nothing. There's no CELs on, it resets the A/B mileage also. Idk if it could be a relay or starter motor. It's got 135k miles. I was thinking the starter relay is going not sure. I'm also getting some extra grinding/whining during cold morning starts, it was louder last winter and I assumed it was from being low on oil all the time.

It comes back on by itself after a min or only after I open the hood then I hear all the gadgets turning on.
:facepalm:
old tech
Posts: 705
Joined: Mon Apr 23, 2018 1:51 pm
Location: n/w pennsysvania

Try cleaning battery terminals first. That will be the most likely the cause. next in line would be ground cable connection. Lastly if those are found to be good, a battery internal problem. A free battery load test at the parts store may reveal the problem also.
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KuroNekko
Posts: 5170
Joined: Wed Aug 15, 2012 5:08 pm
Location: California, USA

This sounds like a weak battery. Voltage test is in order.
2011 Suzuki Kizashi Sport GTS 6MT (Black)
Kizzzy2weeks
Posts: 3
Joined: Wed Mar 03, 2021 3:40 pm

:facepalm:

It was just loose positive connection and tray holder so it was just sliding around, everything clean though no corrosion. Starts fine now

:facepalm:
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