| This note applies to 2nd generation MMI systems only if a navigation system with CD drive control unit -J401- is installed. |
| When a navigation DVD is inserted, the system always checks whether the software on the DVD matches the software on the control unit. |
| If the software is not identical, the software is flashed from the DVD onto the navigation control unit, regardless of whether the software on the DVD is older or newer. |
| This procedure is necessary in order to prevent errors from occurring during navigation because of the close connection between the software on the DVD and the navigation database. |
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