This 2021 Renault Master arrived with a recurring AdBlue system issue. The dashboard showed 774 km remaining before the vehicle could be prevented from starting. According to the video, the van had already stopped during an earlier trip abroad, but the driver managed to reach Latvia.

The workshop worked on the SID321 engine control unit software. The video states that after the software was written, the AdBlue distance countdown disappeared. The DPF system was left operational.

The result shown is the disappearance of the dashboard warning. The video does not show post-work SCR operation checks or an emissions measurement, so those cannot be treated as verified. Long-term performance is not documented either.