Buick 2004 Century - Manual (Page 69)

The ignition key is for
the ignition only.
The door key is for
the driver door and
all other locks.
The keys have unique codes embedded in them to
help prevent theft. See PASS-Key
® II on page 2-17
for more information.
Your dealer or Buick Roadside Assistance can provide
the correct codes for the keys. Contact your dealer
or see Roadside Assistance Program on page 7-5 for
more information.
Notice: If you ever lock your keys in your vehicle,
you may have to damage the vehicle to get in.
Be sure you have spare keys.
If the vehicle has the OnStar ® system with an active
subscription, and the keys were locked inside, a
command could be sent by the OnStar
® system to
unlock the vehicle. See OnStar ® System on page 2-33
for more information.
2-3