Aspects of the present invention relate to a control system for a base vehicle. The control system comprises one or more control units. The control system is configured to associate navigation data for the host vehicle with a value indicating a time; determines an indication of the time elapsed since that date; and deactivates the use of navigation data based on the result of the determination. Aspects of the invention also refer to a vehicle, a control method and a non-transferable computer-readable medium.
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