Indeed, reading the manual for the MS5000 is quite informative, as it contains more information than the BMW manuals. It details for example expected accuracy, and circumstances that can influence GPS positioning.

The nav was originally designed and built by Philips, but they sold the nav division to VDO Dayton. It was since passed on to VDO-Siemens and is now part of Continental.

The ex-VDO repair facility in Wetzlar Germany can repair all BMW nav systems.