Complete Guide: RNS 315 v.4 Map Update via SD Card The Volkswagen RNS 315 navigation system relies on accurate map data to provide precise routing. Upgrading your system with the RNS 315 v.4 map update SD card ensures access to updated road networks, new points of interest, and revised speed limits.
A Class 10 SDHC card is strongly recommended. download RNS 315 v.4 Map Update - SD Card