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You need so called FSC's (Freischaltcode) for updating your nav database, enabling additional features like speed limit indication e.g.
Be advised: A free downloadable FSC-generator can generate maybe a correct code in accordance to your VIN to grant you access to update - but could also smash your system, this happens before at other users.
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Citizen of ///M - Town, where too much is just right
Some say, that my scrotum has its own small gravity field and when Im slowing down that brake lights come on at my buttox 
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