2004 Buick Century Owner's Manual - Page 77

Power Door Locks The vehicle has front power door lock switches. Press the top portion of a door lock switch to unlock or the bottom portion to lock all doors. Programmable Automatic Door Locks Programmable power door locks are intended to provide enhanced security and convenience by automatically locking and unlocking doors under certain conditions. The doors can be set to one of four operating modes. Mode 1: Doors do not lock or unlock automatically when the transaxle is shifted out of or into PARK (P). Mode 2: All doors automatically lock when the transaxle is shifted out of PARK (P), but do not unlock automatically when the transaxle is shifted into PARK (P). Mode 3: All doors automatically lock when the transaxle is shifted out of PARK (P) and automatically unlock when the transaxle is shifted into PARK (P). Mode 4: All doors automatically lock when the transaxle is shifted out of PARK (P) but only the driver's door automatically unlocks when the transaxle is shifted into PARK (P). The rear doors do not have power door lock switches. 2-11