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I think I figure out how to fix the "Full accessory power active"
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Asianguywithamustang
Asianguywithamustang
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Joined Sep 4, 2020 · 6 Posts
Discussion Starter · #1 · Sep 4, 2020
I bought the car brand new and had 600km already but then the "full accessory power active" came out of knowhere
I was able to figure out by myself since I could not find any answers on other forums or websites indicating the problem. The owners manual dont tell you anything.
How to:
1. Let your car to chill for a bit (idk if that helps but that's what I did)
2. Press Start button without pressing breaks
3. Then press the breaks and press the start the button again
Hope this helps if anyone is have issues removing the "full accessory power active". This is the step by step process that I did to fix it. I have no issues after test driving it for 2 hrs.
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Joined Sep 8, 2018 · 2,616 Posts
#2 · Sep 4, 2020
I'm not following you?
The "full accessory power active" message is a completely normal function of our Mustangs, it is not a fault. It happens all the time in my 2017 model.
It means you have full power for all accessories, the USB and power outlets, without starting the car.
Yes, if you want to disable it, to save the battery from draining while sitting in the car without starting it, you simply press the start button again.
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Ford Mustang Ecoboost Forum
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Mustang EcoBoost Discussions
I think I figure out how to fix the "Full accessory power active"
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1 - 12 of 12 Posts
Asianguywithamustang
Asianguywithamustang
·
Registered
Joined Sep 4, 2020 · 6 Posts
Discussion Starter · #1 · Sep 4, 2020
I bought the car brand new and had 600km already but then the "full accessory power active" came out of knowhere
I was able to figure out by myself since I could not find any answers on other forums or websites indicating the problem. The owners manual dont tell you anything.
How to:
1. Let your car to chill for a bit (idk if that helps but that's what I did)
2. Press Start button without pressing breaks
3. Then press the breaks and press the start the button again
Hope this helps if anyone is have issues removing the "full accessory power active". This is the step by step process that I did to fix it. I have no issues after test driving it for 2 hrs.
Like Reactions:Coyote Chaser
Reply
Go Further
Go Further
·
Registered
Joined Sep 8, 2018 · 2,616 Posts
#2 · Sep 4, 2020
I'm not following you?
The "full accessory power active" message is a completely normal function of our Mustangs, it is not a fault. It happens all the time in my 2017 model.
It means you have full power for all accessories, the USB and power outlets, without starting the car.
Yes, if you want to disable it, to save the battery from draining while sitting in the car without starting it, you simply press the start button again.
Try this
Ford Mustang Ecoboost Forum
Search Community
Mustang EcoBoost Discussions
I think I figure out how to fix the "Full accessory power active"
Jump to Latest
Follow
1 - 12 of 12 Posts
Asianguywithamustang
Asianguywithamustang
·
Registered
Joined Sep 4, 2020 · 6 Posts
Discussion Starter · #1 · Sep 4, 2020
I bought the car brand new and had 600km already but then the "full accessory power active" came out of knowhere
I was able to figure out by myself since I could not find any answers on other forums or websites indicating the problem. The owners manual dont tell you anything.
How to:
1. Let your car to chill for a bit (idk if that helps but that's what I did)
2. Press Start button without pressing breaks
3. Then press the breaks and press the start the button again
Hope this helps if anyone is have issues removing the "full accessory power active". This is the step by step process that I did to fix it. I have no issues after test driving it for 2 hrs.
Like Reactions:Coyote Chaser
Reply
Go Further
Go Further
·
Registered
Joined Sep 8, 2018 · 2,616 Posts
#2 · Sep 4, 2020
I'm not following you?
The "full accessory power active" message is a completely normal function of our Mustangs, it is not a fault. It happens all the time in my 2017 model.
It means you have full power for all accessories, the USB and power outlets, without starting the car.
Yes, if you want to disable it, to save the battery from draining while sitting in the car without starting it, you simply press the start button again.
Ford Mustang Ecoboost Forum
Search Community
Mustang EcoBoost Discussions
I think I figure out how to fix the "Full accessory power active"
Jump to Latest
Follow
1 - 12 of 12 Posts
Asianguywithamustang
Asianguywithamustang
·
Registered
Joined Sep 4, 2020 · 6 Posts
Discussion Starter · #1 · Sep 4, 2020
I bought the car brand new and had 600km already but then the "full accessory power active" came out of knowhere
I was able to figure out by myself since I could not find any answers on other forums or websites indicating the problem. The owners manual dont tell you anything.
How to:
1. Let your car to chill for a bit (idk if that helps but that's what I did)
2. Press Start button without pressing breaks
3. Then press the breaks and press the start the button again
Hope this helps if anyone is have issues removing the "full accessory power active". This is the step by step process that I did to fix it. I have no issues after test driving it for 2 hrs.
Like Reactions:Coyote Chaser
Reply
Go Further
Go Further
·
Registered
Joined Sep 8, 2018 · 2,616 Posts
#2 · Sep 4, 2020
I'm not following you?
The "full accessory power active" message is a completely normal function of our Mustangs, it is not a fault. It happens all the time in my 2017 model.
It means you have full power for all accessories, the USB and power outlets, without starting the car.
Yes, if you want to disable it, to save the battery from draining while sitting in the car without starting it, you simply press the start button again.
Anyone else having or had a issue with any accessory items being left on even after the cars off and locked. So basically I have a radar plugged into my 12v in the front and I start the car it turns on that’s fine and dandy, but when I turn the car off completely no accessory mode or anything and lock it it it’s still on. I looked thur my window today and saw it was on but the light in the car was off the doors were locked and the key was inside. I’m afraid eventually it’ll run my battery out. I’m not sure if anyone else had this issues or I need to get it checked by a dealer.
Any thoughts??
Anyone else having or had a issue with any accessory items being left on even after the cars off and locked. So basically I have a radar plugged into my 12v in the front and I start the car it turns on that’s fine and dandy, but when I turn the car off completely no accessory mode or anything and lock it it it’s still on. I looked thur my window today and saw it was on but the light in the car was off the doors were locked and the key was inside. I’m afraid eventually it’ll run my battery out. I’m not sure if anyone else had this issues or I need to get it checked by a dealer.
Any thoughts??
