2021 Ram 2500 Fuel System Diesel Latches Locks Linkages Problems

The contact owns a 2021 Ram 2500. The contact stated that upon driving several miles and refueling the vehicle, he noticed that the Diesel Exhaust Fluid (DEF) additive gauge remained stuck in the same position. There was no warning light illuminated. The dealer was notified of the failure and informed the contact that it was a known failure and that the failure would persist even after the repair. Upon investigating the failure, the contact discovered that the failure mainly occurred in cold weather due to the DEF additive crystallization in cold temperatures, causing the additive gauge to be stuck in the same position. A message indicating to add a DEF additive in the vehicle for safety was displayed. The vehicle was not repaired. Additionally, the contact stated that the tailgate latch had fractured due to cold weather and had been replaced three times by the dealer. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 8,000.