CITROËN DS4 Owner's Handbook Manual page 253

Putting the standard wheel
back in place
Put the wheel back in its housing.
Unscrew the yellow central bolt by a few
turns then put it in place in the centre of the
wheel.
Tighten fully until the central bolt clicks to
retain the wheel correctly.
Put the box back in place in the centre of
the wheel and clip it.
251
Practical information