I own a 2014 Jeep Grand Cherokee with the Ecodiesel engine. Mine does not have a cap that fits in the filler hole. Checked one of their diesel 1500s on the lot and it does. I wonder why. Dealer says none of the diesel Jeeps have the plug. He also said they are having a lot od def issues. Not running dry because both the jeep and the 1500s have def guages but other codes. A big problem with the Jeep def system is it is unprotected under the vehicle and driving on gravel, in heavy rain, on slushy roads and of coarse going off road it is breaking the def injector system off. Puts a whole new meaning to "Trail Rated"
