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  1. R

    Continuous DEF Problems with Sprinters

    I found this on YouTube. Gonna try it before buying 2 $400 sensors.
  2. R

    Continuous DEF Problems with Sprinters

    Idling perhaps by the previous owner. Not by me other than about a one minute warm up.
  3. R

    Continuous DEF Problems with Sprinters

    I have a 2011 Sprinter 3500 and had some mysterious low DEF alarms as well as the dreaded countdowns starting at around 30k miles. I have had low DEF warning lights come on, and I just put one cup of DEF to top it off and the light turns off. (weird). Another time low DEF light came on and I...
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