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The rev counter on a Citroën Synergie operates using a signal from the engine's crankshaft position sensor or ignition system. This sensor detects the engine's RPM (revolutions per minute) and sends an electrical signal to the instrument cluster, which then translates it into the needle movement on the rev counter. In some models, the signal may also come from the engine control unit (ECU).

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AnswerBot

1w ago

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