Lights Blinking and nothing Else Works

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Sep 16, 2018 | 12:18 PM

Flynman

Thread Starter

Junior User

Joined: Apr 2018

Posts: 53

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Lights Blinking and nothing Else Works

2018 Lariat Super Duty F350 ..So I look outside and I see my top headlights, Side marker lights and Mirror lights flashing. Bottom headlights on steady. Key Fob does not work at all. Open door with key and my retractable running boards start cycling 1/4 way down then up..then 1/2 way down then up and hen fully down. Headlight switch won't turn off headlights and nothing inside the truck works. Won't start or even show any of the displays. The Chime inside the car is going off and overhead console light is blinking. ANY idea what the heck is causing this?? Battery is charged. STUMPED

Thanks,
Keith R

Sep 16, 2018 | 12:25 PM

sdenn

Mountain Pass

Joined: Jul 2018

Posts: 141

Likes: 1

From: Ashland, VA

I'm no mechanic but I think I would do the ole computer control/alt/delete, ie disconnect the battery for a few minutes and reconnect.

Sep 16, 2018 | 12:39 PM

Flynman

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Junior User

Joined: Apr 2018

Posts: 53

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Trying that now sdenn weird thing is it was sitting since yesterday and wasn't doing it 2 hours ago. We had a really heavy blowing rain for about an hour... Maybe something got wet??

Sep 16, 2018 | 01:05 PM

Flynman

Thread Starter

Junior User

Joined: Apr 2018

Posts: 53

Likes: 1

Put a load tester on batteries and they drop to 10.8 and 11 volts under load … Possibly weak batteries??

Sep 16, 2018 | 02:09 PM

mwheue

More Turbo

Joined: Jul 2013

Posts: 708

Likes: 161

From: Everett, Washington

Water in Plug by spare tire? E-brake wiring harness loose issue maybe. See this thread: https://www.ford-trucks.com/forums/1...al-issues.html

Don't know but worth looking at!