○ Review the list of faults to identify failures

○ Preventive replacement of all worn components 

○ Each part is tested to enasure the same performance as the genuine part

○ Fitting on the identical to the genuine part

○ Nothing appears on the screen or has some pixel dysfunction

○ Some commands do not work anymore

                  ○ Sleep mode does not work

○ Radio, air conditioning, navigation…. Functionalities.