If you want to execute adjustments for your Beta M4 then it is always a good idea to own a Workshop Manual to use as a guide in case you want to know techniques to take out a specific part for instance the Dashboard and match it again accordingly.
Beta M4 Workshop Manuals can offer you special diagnostic information for your automobile so if something is playing up it will help you find out what the situation is and how you can repair it. You can then determine if you can do this by yourself or in the event the job is just too big you can make a reservation for your M4 right into a nearby mechanic.
Beta M4 manual