2003 Buick Century Owner's Manual - Page 150

Security Light The SECURITYlight will come on when you the turn key to START andstay on until the vehicle starts. Cruise Control Light The CRUISE light comes on whenever you set your cruise control. See "Cruise Control" under Turn Signal/Mu!tifunction Lever on page 3-5. SECURITY CRUISE It will also flash if your ignition key is too dirty or wet for the PASS-Key@II system to read the resistor pellet. See PASS-Key" !I on page 2- 17. If the resistor pellet is damaged or missing, the light will come on. 3-41