Vauxhall Astra 2011.5 Owner's Manual page 61

60 Storage
Unfold pedal crank recesses
Fold one or both pedal crank
recesses upwards until the diagonal
support engages.
Remove the pedal crank mounts from
the pedal crank recesses.
Adapting the rear carrier system
to a bicycle
Press the release lever and withdraw
the wheel recesses.