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I would caution everyone about deleting the DEF system incorrectly or having your local buddy at the garage do it. The last time I was at a MB dealership, there was a sprinter there with a blown engine over doing the bypass or delete wrong. The mechanic explained it, but I am not mechanical so...

I have a 2014, bought it new in 2015. During the warranty period, it stranded me 6 times due to DEF system. After warranty, first repair was $2200. One year and 50,000 miles later, it was just under $4,000.00. Twice, I picked it up at the dealer, heading out on a trip and twice, the DEF...