If you want to execute maintenance tasks on your CPI Aragon GP then it is usually a great idea to own a Workshop Manual for personal reference in the event you need to know how to strip off a certain component such as the Dashboard and install it again in the correct way.
CPI Aragon GP Workshop Manuals gives you special diagnostic guides for your automobile therefore if something is playing up it will help you understand what the situation is and ways to repair it. You can then determine if this can be achieved yourself or that the job is too big you could book your Aragon GP in to a decent mechanic.
CPI Aragon GP manual