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Home >> Mercedes Benz >> 1986 >> 560SL >> Repair and Diagnosis >> Engine Performance >> System >> Cis-E System >> Operation >> Fixed Operating Mode
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Fixed Operating Mode

In the event of an illogical signal received by the control unit (system malfunction, open or circuit) the control unit will automatically revert to a fixed operating mode. This means that the engine will continue to run but not at its optimum, electronically controlled performance level.