If you have to execute auto repairs to your CCM 404 DS Trail then it is always recommended to own a Workshop Manual for a reference just in case you need to know easy methods to strip off a particular part for instance the Door and match it again properly.
CCM 404 DS Trail Workshop Manuals are able to offer identifiable diagnostic details with regards to your car so if something is playing up it helps you discover what the problem is and some ways to fix it. You will be able to analyse if this can be done on your own or in the event the job is too big you can make a booking for your 404 DS Trail into a nearby garage.
CCM 404 DS Trail manual