NHTSA Complaint #11476652 — 2019 NEWMAR DUTCH STAR

Vehicle was operating normally when dash lights up with bars stating "check Engine and Low DEF." My dash (digital) locked up and I could not access any error codes. I checked my DEF tank and it was 80% full. I contacted Freightliner Custom Chassis who advised that it needed to go to a dealer. They gave me two dealers, one 30 miles away and the other was 60 miles. Contacted both. Neither on could say if the engine would go into de-rate mode and leave me stranded. I asked for a mobile tech and neither had one. I was five miles from my destination and made it there. I found a mobile tech on my own who came out and assessed that the def system indicated a malfunction. He worked with it for hours and finally got the codes to clear and I was able to make it home. This system has been problematic from the start. This failure of this system can leave the vehicle stranded on the side of the road, cause it to decelerate in traffic lanes creating a safety issue for other drivers and passengers in the vehicle. This is an industry wide known problem yet nothing has been done to resolve the issue.