Error in COMAND operating and display system - AF82.85-P-6000-01A

Error patterns: 

• Route calculation time too long.
• Map display not complete.
• Route is not indicated in blue color in map display.
• Destination is entered and confirmed, then monitor jumps back to destination entering basic menu, "No Route" appears on display, etc.
• CD reading error.
• Navigation cannot be activated
• Navigation/destination guideline is interrupted occasionally.
• Destination memory occasionally out of order
• Destination entering erroneous/not possible
• Street names are not or incompletely indicated when entering destination.
• Navigation too slow
• Navigation CD not accepted.