If you need to perform fixes on your Lem Four X then it will always be recommended to own a Workshop Manual to use as personal reference in the event you need to know techniques to take out a specific component for example Dashboard and install it again safely.
Lem Four X Workshop Manuals provides certain diagnostic details for your vehicle so if something is not working it will help you ascertain what the issue is and tips on how to fix it. Then you are able to assess if this can be achieved by yourself or in the event the job is too big you are able to make a reservation for your Four X in to a suitable car garage.
Lem Four X manual