Can't fill DEF
Lead Driver
Joined: Feb 2005
Posts: 7,975
Likes: 2,670
From: The Great State of Texas
Are you using the Motorcraft fill tube? If the breathing tube is kinked it basically won't work.
I fill my DEF when the tank when it goes to less than half full with no issues.
I fill my DEF when the tank when it goes to less than half full with no issues.
Cargo Master
Joined: Nov 2005
Posts: 2,051
Likes: 10
From: TEXAS
I top mine off when ever it crosses my mind to do so. I have never seen a DEF Level message to date.
I have used the Ford DEF once and since then I have been using Blue DEF picked up at Walmart. I like the fill hose from Ford, but if you simply listen to the DEF as it is poured in you can tell when it is full without making a mess.
I have used the Ford DEF once and since then I have been using Blue DEF picked up at Walmart. I like the fill hose from Ford, but if you simply listen to the DEF as it is poured in you can tell when it is full without making a mess.
Senior User
Joined: Feb 2011
Posts: 118
Likes: 0
From: Spokane, WA
Mine started giving me eradicate DEF messages like less than 1/2 or 300 miles to go, etc. even when the tank was full. it would count down for awhile then clear on its own, usually on a rough road. No CEL the first few times, but after a couple, I had it diagnosed by a dealer and was told the Reductant Tank Temp Sensor was bad, estimated cost for dealer repair was $1200 (past warranty).
I recommend taking it out on a section of freeway made with concrete slab, that should bounce it loose, it you still have the stock shocks
I recommend taking it out on a section of freeway made with concrete slab, that should bounce it loose, it you still have the stock shocks
Thread Starter
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Senior User
Joined: Nov 2006
Posts: 106
Likes: 0
I top mine off when ever it crosses my mind to do so. I have never seen a DEF Level message to date.
I have used the Ford DEF once and since then I have been using Blue DEF picked up at Walmart. I like the fill hose from Ford, but if you simply listen to the DEF as it is poured in you can tell when it is full without making a mess.
I have used the Ford DEF once and since then I have been using Blue DEF picked up at Walmart. I like the fill hose from Ford, but if you simply listen to the DEF as it is poured in you can tell when it is full without making a mess.
Posting Guru
Joined: Nov 2010
Posts: 1,783
Likes: 1
From: WY
Not sure where you reside. Could it be frozen? Can you put it in a warm shop for a while and thaw it out real good? Eventually, running it for an extended period should thaw the tank. IDK Just thinking.
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Elder User
Joined: Apr 2013
Posts: 714
Likes: 1
I have the Ford nozzle and I had an issue once where it wouldn't let any flow in. I removed it and reinserted it a couple times and wiggled it around and then it worked. Was dark and only my second time doing it so I'm not really sure what the problem was.
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Thread Starter
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Senior User
Joined: Nov 2006
Posts: 106
Likes: 0
BINGO!!! That was it. Squeezed both tubes, fill and vent, then heard a gurgling sound. Voila....... filled like a champ. Thanks
Posting Guru
Joined: Nov 2010
Posts: 1,783
Likes: 1
From: WY
SCORE! Nice job.
Reps sent.Thanks for the feedback. Glad for ya.
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Those of you that keep topping off the DEF..... stop doing it. Drive the truck and fill the DEF when it tells you, at minimum when it drops below half tank. Do not fill it if the tank level is more than half. If you keep topping it off constantly, you will eventually run into problems (such as crystals in the fill tube, errors reading correct level, etc). We get calls on this DAILY from dealers, fleets, etc.
Thread Starter
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Senior User
Joined: Nov 2006
Posts: 106
Likes: 0
Those of you that keep topping off the DEF..... stop doing it. Drive the truck and fill the DEF when it tells you, at minimum when it drops below half tank. Do not fill it if the tank level is more than half. If you keep topping it off constantly, you will eventually run into problems (such as crystals in the fill tube, errors reading correct level, etc). We get calls on this DAILY from dealers, fleets, etc.
Lead Driver
Joined: Feb 2005
Posts: 7,975
Likes: 2,670
From: The Great State of Texas
X2... And after I rinse the spout I let hang vertical to allow any internal water to drain out. Once it is completely dry I put it back into the zip lock bag to maintain a clean spout for the next refill.