Ram 2500 Service Def System See Dealerfaq - Leaving on a 2200 mile trip pulling a 5th wheel, and got the dreaded 'service def system see dealer' message. Message went away after a few seconds, but after researching. 2025 ram 2500 6. 7l bighorn 26,000 miles. So i've got the dreaded service def system see dealer indication. I am in mt, so the cold temps could play a role. Efi live or ez lynk will be your best options to turn off the def system. Next, check with the manufacturerโs website. When the def system needs to be serviced the following warnings will display: Service def system see dealer โ this message will display when the fault is initially detected, each time. I have a 2025 ram 2500 with 24k miles that i just bought. Had the def system message come up with a check engine light. My def gauge was at half tank. I filled up the. Had the message service def system see dealer message pop up today while towing my camper home. I always use def. You have just the see dealer message or is the check engine light on too? Leaving on a 2200 mile trip pulling a 5th wheel, and got the dreaded 'service def system see dealer' message. Message went away after a few seconds, but after researching. 2025 ram 2500 6. 7l bighorn 26,000 miles. So i've got the dreaded service def system see dealer indication. I am in mt, so the cold temps could play a role.
Leaving on a 2200 mile trip pulling a 5th wheel, and got the dreaded 'service def system see dealer' message. Message went away after a few seconds, but after researching. 2025 ram 2500 6. 7l bighorn 26,000 miles. So i've got the dreaded service def system see dealer indication. I am in mt, so the cold temps could play a role. Efi live or ez lynk will be your best options to turn off the def system.