Ram Heavy Duty Forum

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Recent content by Whauhunter

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    2025 Cummins--Anyone notice that DEF gauge not reading correctly?

    Sorry so late to respond but the holidays took up my time. Yep got a call from the dealer and took it in on the 18th and they replaced the def tank gauge and pump module in the tank. It was on back order but they said they got one from another dealer. So far so good, it hasn’t acted up since...
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    2025 Cummins--Anyone notice that DEF gauge not reading correctly?

    Take it in and have it looked at and start the paper documentation trail. Mine is doing it more frequently now and will go to empty then the chime comes on and the warning of reduced power after 200 miles. If I shut it off for a few minutes and start it back up it goes back to the correct...
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    2025 Cummins--Anyone notice that DEF gauge not reading correctly?

    Sounds like we’re having exactly the same problem. I brought mine in so it can be documented because if they can’t get it fixed by, I think, the fourth time then I can start the paperwork for lemon law. My Son did this on a 2023 Dodge gas engine pickup because the factory waited 39 days before...
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    2025 Cummins--Anyone notice that DEF gauge not reading correctly?

    Well it’s been back to the dealer twice in the last three weeks for this problem. First time they “reflashed” the system and within five miles on my way back home it went to empty on a full def tank. Took it back this past Monday, the 18th, and dropped it off explaining again in full detail...
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    2025 Cummins--Anyone notice that DEF gauge not reading correctly?

    I will. I operate an auto repair shop out of my home but this truck is so new there isn’t any information on the truck, no info on any of the subscription services yet. Friday I had my wife sitting in it with it running and I was under wiggling the wire harnesses and connectors and banging on...
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    2025 Cummins--Anyone notice that DEF gauge not reading correctly?

    I was doing a Google search of this very problem so I registered to the forum. Ya I’m having the very same problem with my 2025. When full It slowing works it way from full to 3/4 back to almost full then drops to 1/2 and will eventually go all the way to empty and cause the low def warning...
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