I have a 15 2500 CTD with 36000 miles on it. Today while driving I received a message on the dash that my truck was doing a regen and the filters were 100% full. This is the first time I ever got a message and after driving for about 5-10 minutes (normal speeds) the message counted down to 90,80, then 70 % full. My question is wouldn’t it come up before being 100% full with another number telling me they were almost full?
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