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F150 Lightning FORScan thread - Version 2

Telemachus

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Is there any way to make headlights turn on with welcome lighting?
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Jlarbeypro

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well... I did some forscan mods on my 24' flash, including silent mode, adaptive headlights, and turned off ding ding ding on door open.

after those changes no DTCs. but weird things happening. When I turn off my truck, instrument panel goes black immediately, then restarts immediately. all the "my settings" are cleared every time i start the truck and i have to change what i want such as trip 2 and driver assist page.

also Ive head a few service vehicle soon prompts and "frunk ajar" when I turn on the truck. also had the truck shut off immediately when truck on and plugging in to charge at dc charger.

I reviewed all the forscan changes, and I dont seen anything obvious to be the issue or any errors.

any ideas or suggestions?
 

B177y

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well... I did some forscan mods on my 24' flash, including silent mode, adaptive headlights, and turned off ding ding ding on door open.

after those changes no DTCs. but weird things happening. When I turn off my truck, instrument panel goes black immediately, then restarts immediately. all the "my settings" are cleared every time i start the truck and i have to change what i want such as trip 2 and driver assist page.

also Ive head a few service vehicle soon prompts and "frunk ajar" when I turn on the truck. also had the truck shut off immediately when truck on and plugging in to charge at dc charger.

I reviewed all the forscan changes, and I dont seen anything obvious to be the issue or any errors.

any ideas or suggestions?
Sounds like a low or dying 12 volt battery to me. Possibly exacerbated by performing the Forscan changes in accessory mode.
 

Jlarbeypro

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Sounds like a low or dying 12 volt battery to me. Possibly exacerbated by performing the Forscan changes in accessory mode.
WELL you were RIGHT.
my 12 volt was at 10.8 V... how the heck it was that low but still functioning some is mind blowing.

my battery is only 1 year old too... wonder if FORD will replace for free? I put in another H3 I had laying around, now everything is just as it used to be.

Thanks so much for that thought!

also, anyone every bought a lithium 12v that they love?
 

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B177y

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WELL you were RIGHT.
my 12 volt was at 10.8 V... how the heck it was that low but still functioning some is mind blowing.

my battery is only 1 year old too... wonder if FORD will replace for free? I put in another H3 I had laying around, now everything is just as it used to be.

Thanks so much for that thought!

also, anyone every bought a lithium 12v that they love?
Check with your dealer for a warranty replacement. Don't tell them you were using ForScan.

If the old battery holds a charge and just died from being in accessory mode, they might deem it as still "good" and send you on your way.

It's worth a try though as it should be covered under your warranty if it doesn't hold a charge, assuming you are still in the bumper to bumper time/mileage.

If the the battery doesn't charge while your truck is "on" (not accessory mode), there may be other issues like a DC-DC converter problem, that warrants a service visit for sure.

Any different chemistry battery is generally not recommended based on what I've read here and the Mach-e forum due to the BMS not being made for the different charging and use curves.
 

Jlarbeypro

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Check with your dealer for a warranty replacement. Don't tell them you were using ForScan.

If the old battery holds a charge and just died from being in accessory mode, they might deem it as still "good" and send you on your way.

It's worth a try though as it should be covered under your warranty if it doesn't hold a charge, assuming you are still in the bumper to bumper time/mileage.

If the the battery doesn't charge while your truck is "on" (not accessory mode), there may be other issues like a DC-DC converter problem, that warrants a service visit for sure.

Any different chemistry battery is generally not recommended based on what I've read here and the Mach-e forum due to the BMS not being made for the different charging and use curves.
Thanks for all that. Ford is going to bench test the battery and see whats up. will replace for free within 3 years they stated.
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