Factory radio and nav system
 

Newbie here

My son just bought a 2004 5 door and loves it. He has the 6 cd system where the error code is 06:er10 communication error.

An additional question is, can this error be fixed or does the head unit have to be replaced?

Also, can he replace the unit with an after market and still keep the nav system? someone had said the 2 were linked together.

Thanks in advance

Ken