Vauxhall Astra Owner's Manual page 208

Prise off the wheel cover 3 using the
hook included with the vehicle tools.
Vehicle tools – see page 204.
206
Wheel cover with anti-theft lock 3:
Release the lock using the key included
with the vehicle tool kit by inserting it in
the recesses on the lock .
If the lock cannot be released by hand,
insert a screwdriver into the recess on the
key a nd turn it.
Prise off the wheel cover using the hook
included with the vehicle tools. Vehicle
tools – see p age 204.