Infinite DEF

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Mar 27, 2024 | 02:35 PM

#16

redford

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Joined: Sep 2000

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From: Stephensville WI

My DEF gauge behaves like this, but only when I fill the DEF tank. It takes about 30 minutes of driving for it to register the full amount of the DEF when I top off the tank.

Mar 27, 2024 | 02:41 PM

#17

HRTKD

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From: Wyoming

Quote:

Originally Posted by redford

My DEF gauge behaves like this, but only when I fill the DEF tank. It takes about 30 minutes of driving for it to register the full amount of the DEF when I top off the tank.

Similar on my 2017.

Mar 27, 2024 | 03:53 PM

#18

Andrews automotive

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5th Gear

Joined: Mar 2024

Posts: 5

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Haven't put any DEF in it in a while so i know its empty. Now it starts at 1% then slowly climbs to 90%.

Mar 27, 2024 | 05:37 PM

#19

r1mcdonald

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Joined: May 2023

Posts: 47

Likes: 12

From: space coast

when is the last time you had the oil changed as they usually top it off at that time

Mar 27, 2024 | 06:53 PM

#20

4wd6.7L

Lead Driver

Joined: Dec 2020

Posts: 8,634

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Quote:

Originally Posted by redford

My DEF gauge behaves like this, but only when I fill the DEF tank. It takes about 30 minutes of driving for it to register the full amount of the DEF when I top off the tank.

Quote:

Originally Posted by HRTKD

Similar on my 2017.

I've read that is somewhat common for 17-19 gen. My '19 is an exception, I don't know exactly how fast it registers after adding a jug, but it's quick. I add a 2.5g jug when it shows 1/4 tank, in the short time it takes to rinse out the nozzle and toss the box, maybe 5 minutes, key on engine off it shows around 5/8 tank. Next time I'll try to check it immediately after adding the DEF.

Mar 27, 2024 | 08:36 PM

#21

Rwhjr

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Joined: Mar 2021

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Quote:

Originally Posted by 4wd6.7L

So if that is working correctly, as you say, then the truck in post #2 is not working correctly?

my 23 has no lag

reads accurately right at start up, and instantly goes up to the new level if I fill it up at be all

Pretty much exhibits no lag whether it’s using def or if I add any.

Mar 27, 2024 | 08:40 PM

#22

Rwhjr

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Joined: Mar 2021

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Quote:

Originally Posted by HRTKD

I have the DPF % screen on most of the time, so I don't watch the DEF screen too often. On my 2017, the DEF screens don't display a percentage as I recall. It's an empty to full gauge on one screen and and "OK" on the other screen. Is that different with the 2023?

the 23s have much better gauges and information you can display

it has a diesel measurement screen that simultaneously can display DEF level and DPF %, turbo boost, exhaust brake, etc.

he’s probably watching it from this screen if I had to guess.

Mar 27, 2024 | 09:13 PM

#23

senix

Super Moderator

Joined: Aug 2008

Posts: 37,375

Likes: 1,860

From: Frederick, MD

mine will register a fill up right away.

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Mar 27, 2024 | 09:50 PM

#24

HRTKD

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Joined: Oct 2015

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From: Wyoming

Quote:

Originally Posted by Rwhjr

the 23s have much better gauges and information you can display

it has a diesel measurement screen that simultaneously can display DEF level and DPF %, turbo boost, exhaust brake, etc.

That's pretty sweet!

Apr 1, 2024 | 03:48 AM

#25

RA033125

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Joined: Jul 2023

Posts: 94

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Quote:

Originally Posted by Andrews automotive

Yes DEF level. Obviously something with the sensor, just asking if anyone has seen this.

My truck will climb to the correct def level after start up. Usually only takes a few minutes. I assume it is the float level adjusting upon start up. It is annoying, but it will be consistent so I have not asked about it yet. If guys trucks are not doing this, I will ask at the next 5k mile oil change.

Apr 1, 2024 | 09:04 AM

#26

HRTKD

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Joined: Oct 2015

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From: Wyoming

Quote:

Originally Posted by DoomsFall

Great avatar!

I added DEF to my truck this weekend. It registered the new level right away. But I have a empty-full gauge, not a percentage readout. It hasn't always reflected a recent addition of DEF, so I've learned to be patient.