I bought my 2nd hand Berlingo last September. Although only showing 5,000 miles then the dealer had a local non-Citroen garage service it. Trouble is that now at 7,000 miles with ignition first on, a spanner shows and says 750 miles to go before service necessary. Can I reset this myself? There is a reset button on the right of the instrument panel but it seems to do nothing! Thanks. Graham and Carole

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