See also:

Starting the vehicle
Insert the key in the ignition switch. The system recognises the starting code. Turn the key fully towards the fascia to position 3 (Starting) . When the engine starts, release the key. ...

Fuses under the battery
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Citroen C5 HDi 200 dpfs, a blend of power and economy
A new engine is making its appearance in the Citroen C5 range, a new-generation 2.2 litre powerplant bringing across-the-board progress on power, torque, silence, fuel consumption and CO2 emission ...