Issue with DEF warning on dash

UNBROKEN · Feb 12, 2015

So I showed the 500 miles to empty warning for DEF. Since I'll be deleting next week I only put in one 2.5 gallon jug of DEF....less to drain out later.
Now the warning is still on the dash every time I start the truck and it's counted down to about 360 miles left now. I scrolled through all the menus on the dash and can't find a way to reset it. Did I miss something or do I have to fill it all the way? I really don't need it going into limp mode before I can delete everything. LOL

jwalk09 · Feb 12, 2015

I haven't refilled mine yet, but I've read where you almost have to fill it up before it resets the gauge

04stroker · Feb 12, 2015

You have to basically fill it up for it to reset do not think there is a manual way to do it. There is not a float sensor in that tank just 3 or 4 (cant remember exact amount) of level indicators down the side of the tank and when it hits each one and gives you the miles based on calculations it makes between those sensors and and how you drive.

UNBROKEN · Feb 12, 2015

Great...guess I'll have to pump 5 gallons of that crap out next week.

Thanks

04stroker · Feb 12, 2015

No problem. That is what a Ford instructor told me anyway never looked inside one to verify but makes sense.

POWER-STRUCK · Feb 12, 2015

Has 2 anode rods. Can determine full half tank or empty. The rest it just averages. So if you get to half tank the light will go off

lincolnlocker · Feb 12, 2015

UNBROKEN said:
Great...guess I'll have to pump 5 gallons of that crap out next week.

Thanks

just use water to top it off.. unless they changex something in the 15s, i ran 16k miles runnijg water from the garden hose before i deleted it..

live life full throttle

CurtisF · Feb 12, 2015

POWER-STRUCK said:
So if you get to half tank the light will go off

This^^^^^^^

Probably just need another 1/2 gallon or so

12stroker · Feb 13, 2015

lincolnlocker said:
just use water to top it off.. unless they changex something in the 15s, i ran 16k miles runnijg water from the garden hose before i deleted it..

live life full throttle

bingo... i did the same when i returned my truck to stock to get some work done. deluded def to get rid of the crystallization in the tank and lines.

67boost · Apr 9, 2015

So is running water in an active DEF system safe?

That's what I understand, but I just want to be sure.

Dzchey21 · Apr 9, 2015

It's fine. It's just not going to do its job. I would imagine if you did it enough and it was pure water in the tank you would get a code for it.

lincolnlocker · Apr 9, 2015

Dzchey21 said:
It's fine. It's just not going to do its job. I would imagine if you did it enough and it was pure water in the tank you would get a code for it.

i ran 15k on nothing but hose water then got a low quality def code.. dumped a gallon of def in it and code went away. started using water again then i deleted the dpf..

live life full throttle