CR-4x2y Nomenclature:
It appears that even these stereos follow the same nomenclature as other Volvo units: The CR-4123 is a popular unit in North America; however, a friend of mine recently came across a CR-4023 for sale in mainland Europe. This is similar to, say, the CR-7x2 where the 'x' designates the region code - 0 for Europe, 1 for North America, 2 for Australia, and is it 3 for Japan?
In the case of these units, they will take the form in the title: CR-4x2y where x appears to be the region code, and y may refer to some firmware/hardware version for the unit. So far I have come across a CR-4021, CR-4023, CR-4024, and a CR-4025.
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