Keep accessory power on

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Mar 17, 2017 | 09:12 AM

bluewaveaudio

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From: San Antonio texas

Keep accessory power on

Anyone figured out how to press the start button and keep accessory power from turning off after a couple of minutes

Mar 17, 2017 | 09:48 AM

troverman

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Joined: Apr 2013

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From: NH

Quote:

Originally Posted by bluewaveaudio

Anyone figured out how to press the start button and keep accessory power from turning off after a couple of minutes

Nope. This was an early complaint. If you push the start button without hitting the brake pedal, you get "full ACC power" but it basically puts the truck in the traditional "ignition on" position with all warning lights, fan blower, headlights, etc. If you shut it back off, you have 30 minutes of ACC power to run the radio, and the 10-minute timeout delay for running the power windows and sunroof. If you open a door, the power goes away.

If you are just looking for radio, you can switch it on without hitting the start button...it will operate for 30 minutes and shut off. You can do this with the door open so the radio will play while you vacuum the truck out, etc.

To me, the most annoying thing is you can no longer operate the wipers without having full ACC power on.

It's funny, our 2010 Lincoln has push button start...and if you push the button without hitting the brake, the message center reads "Accessory Power Active" and it lets you do anything you could do with the old ignition key in the ACC position. No warning lights, no headlights, etc.

I'm wondering if FOREScan can change what pushing the start button without hitting the brake does.

Jan 7, 2019 | 05:01 PM

Corey Cook

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Joined: Jan 2019

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Sitting a 2015 now

[QUOTE=bluewaveaudio;17039954]Anyone figured out how to press the start button and keep accessory power from turning off after a couple of minutes[/QUOTE

I'm sitting in the drivers seat right now. Engine off. Double tapped Start button, not pressing the brake. With stopwatch. 30 second countdown was at 30 minute mark. Pressed ok to continue.

Jan 7, 2019 | 11:18 PM

HRTKD

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Joined: Oct 2015

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From: Wyoming

Which outlet is giving you 30 minutes? I updated the firmware in my dashcam tonight and provided it power from the 12v cigarette port that is next to the 110v port. As near as I can tell, as soon as I hit the start pushbutton to shut it off of accessory mode the dashcam also shut down. That led me to believe that there was zero power at that 12v port.

Jan 11, 2025 | 12:46 PM

Mcallibn

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Joined: Jan 2025

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Only work around... at least for the radio.

Quote:

Originally Posted by bluewaveaudio

Anyone figured out how to press the start button and keep accessory power from turning off after a couple of minutes

2019 F250 Lariat - After shutting off the ignition the radio stays on for 10 minutes (unless you open the door in which it will go off immediately) after which you can just push the radio power button one time, let it go and wait a few seconds for the radio to come back on; it will then stay on for 30 minutes. (The usb ports remained active to power my cell phone.). Also, if you manually turn the power on to the radio, it stays on whether you open the door or not as opposed to when you first turn off the ignition and open the door.