BMW On-board Computer Navigation TV 7 Series 1999 Owner's Manual

To reset the navigation system, press and hold the power button for approximately 10 seconds until the system reboots. If this does not work, disconnect the car battery for a few minutes, then reconnect.
Check the connections to the screen and ensure they are secure. If the issue persists, it may be a problem with the screen itself or the display unit, which may require professional repair or replacement.
Map updates for older models like the 1999 7 Series are typically done using a CD/DVD system. Obtain the latest map disc from a BMW dealer or authorized service center and follow the instructions for installation.
Ensure that there are no obstructions above the GPS antenna, such as roof racks or metallic items. If the problem continues, the GPS antenna or receiver may be faulty and require inspection or replacement.
Adjust the brightness by navigating to the settings menu on the display and selecting the brightness or display options. From there, you can increase or decrease the brightness level to your preference.
System freezing can be caused by outdated software or corrupted data. Try resetting the system and checking for any available software updates. If the issue persists, a professional diagnostic might be necessary.
The 1999 BMW 7 Series navigation system is primarily designed for navigation purposes and may not support DVD playback. Check the owner's manual for specific media compatibility.
To perform a hard reset, disconnect the vehicle's battery and leave it disconnected for at least 30 minutes. This will reset the system settings to default. Reconnect the battery afterward.
Incorrect location display can result from outdated maps or a malfunctioning GPS antenna. Update the maps and check the GPS antenna connection and functionality.
Basic troubleshooting such as checking connections, resetting the system, and updating software can be done by the owner. For hardware issues, it is recommended to consult a professional technician.