Mercedes Sprinter Vito Start Error 1.3

Are you facing a non-start situation with your Mercedes Sprinter or Mercedes Vito?
GML AutoKeys have dealt with these issues on many Mercedes commercial vehicles.
The main cause of the START ERROR being displayed on the dash is due to corruption of data in 2 of the vehicles main units,
one is the Temic immobiliser box also known as the WSP and the Main Engine control unit.
We recommend trying a few things prior to giving us a call