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One week old 2026 Ram 3500 DRW DEF system warning
I am new to this site but have been searching for people with the same issue that I'm having and a possible solution. I purchased my new 3500 on Monday 11/17. When the sales rep returned from filling the tank up, he said that the "Service DEF System" message was on but that the service...- RElliott
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- Forum: 2025+ 6.7 Cummins I6 ZF 8 Speed