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I have a 2016 Grand Cherokee Jeep Diesel and the DEF indicator has been stuck at 25% for three months while I have driven 1,500 miles, at least. A week ago the engine indicator light came on so I took it in to the dealer, and after getting the error codes, they reset several but one they could not. They said, don't worry and gave me an appointment a month away.

Then a day later the engine light went out. Now it is back on and the DEF is still at 25%, and I have not gotten the 500 mile warning.

Is this normal?

Todd
 

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My DEF gauge is never accurate. It doesn't go below 25%....... I got the 500 mile message while camping in NH two weeks ago but there is always a Walmart close. This has happened twice over 40 K miles. Each time I put in 5 gal. NH was a short hop but if I am going over 1000 miles I check levels including DEF and add to 1/2.... I change my own oil and filters.... add my own DEF. Also because I tow a trailer I check my oil level when I hook up. I keep a quart in the jeep. So far I have not had to use it. When I first got the Jeep oil life was geared to usage. My first change was right at 60 K. People complained: They changed that and it's locked to 10 K. I don't like that. A 6500 pound vehicle towing a 6500 pound vehicle will use twice as much diesel and oil life should reflect that. I paid almost 40 grand for this vehicle and some have paid more than 65. or so I hear. It is a substantial investment for me. You will not find "Normal" on this forum. 5 years ago.... yes. Now it tends to be a place where the disgruntled go to build whatever case they are working on. That said I will gladly share with you what I have learned........
 

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My DEF gauge is never accurate. It doesn't go below 25%....... I got the 500 mile message while camping in NH two weeks ago but there is always a Walmart close. This has happened twice over 40 K miles. Each time I put in 5 gal. NH was a short hop but if I am going over 1000 miles I check levels including DEF and add to 1/2.... I change my own oil and filters.... add my own DEF. Also because I tow a trailer I check my oil level when I hook up. I keep a quart in the jeep. So far I have not had to use it. When I first got the Jeep oil life was geared to usage. My first change was right at 60 K. People complained: They changed that and it's locked to 10 K. I don't like that. A 6500 pound vehicle towing a 6500 pound vehicle will use twice as much diesel and oil life should reflect that. I paid almost 40 grand for this vehicle and some have paid more than 65. or so I hear. It is a substantial investment for me. You will not find "Normal" on this forum. 5 years ago.... yes. Now it tends to be a place where the disgruntled go to build whatever case they are working on. That said I will gladly share with you what I have learned........
Thank you! I agree with everything you said. The days are long gone when I rebuilt the transmission on my CJ5 and replace the cam shaft gear. It's a new world, but I love my Jeep Diesel -- my trailer is only 3,700 pounds, however it is a nice pair.

Todd Cary
 

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That is the weight of the trailer before this one. A "Visa" by Gulfstream. Towing from Boston (Just South of) to Chattanooga I would get 20 mpg if I kept my speed at about 58mph. Now I get about 16 towing 6000.
 

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Thank you! I agree with everything you said. The days are long gone when I rebuilt the transmission on my CJ5 and replace the cam shaft gear. It's a new world, but I love my Jeep Diesel -- my trailer is only 3,700 pounds, however it is a nice pair.

Todd Cary
Took it in and they replaced the DEF injector and a sensor. Guess what? Still stuck on 25%. But I had complained about a lag at 6 - 12 mph when accelerating into a roundabout several times -- fell on deaf ears. But this time the service manager wrote it down as part of the DEF problem *AND* they did a Computer Transmission Shift Adaptive Relearning. The Jeep drives like never before!! Smooth shifting and NO LAG. To think I drove it for 20,000 miles with that BAD programming for the transmission -- so bad my wife preferred not to drive it.

Anybody have this problem involving Computer Transmission Shift Adaptive Relearning? Not being done?

Todd
 
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