Today's commercial vehicles automatically register defects and malfunctions. A light will appear to inform you of this. If you drive too long, you have a chance of unnecessary repairs. Derks Vans has up-to-date diagnostic equipment and skilled Technical Specialists, with which we can read the memory of the system. This allows us to determine the cause of the malfunction or error. We can do this with all brands and all models of commercial vehicles. If necessary we are also able to solve the malfunction or error, so that you are safely on the road again quickly.