For more information on the RNS 315 system, map updates, and troubleshooting, visit the following resources:
Once an SD card is paired with an RNS 315 unit, it is electronically locked to that specific VIN. download RNS 315 v.4 Map Update - SD Card
Elias turned off the voice guidance. He drove the rest of the way by the blue line alone. For more information on the RNS 315 system,
Updating Your RNS 315 Navigation: The Truth About SD Card Downloads download RNS 315 v.4 Map Update - SD Card