CITROËN C3 Handbook page 230

In the event of a breakdown
Putting the wheel back in place
F Put the wheel back in its housing.
F Unscrew the nut a few turns on the bolt.
F Position the fixing parts (nut and bolt) in the
middle of the wheel.
F Tighten the central nut until it clicks to
retain the wheel correctly.
228
F Clip the tool storage box back into place
(standard spare wheel).
If there is no wheel in the well, the fixing
parts (nut and bolt) cannot be refitted.