2003 Buick Century Reset Service Engine Soon Light, The My Buick service engine soon light is on and won'tgo off. Please help. In this video i show you how to reset your oil life on this 2004 Buick Century. This indicates that the system is resetting itself. Turn the ignition to run (one position before starting engine). Turn the ignition to "Off" and wait one minute. Press the GAGE INFO button on the left side of instrument cluster until you see “REMAINING OIL LIFE” Finally, hold the RESET button until the 2003 Buick Century 1. And as the name suggests, it is a We would like to show you a description here but the site won’t allow us. Like and subscribe. 2. eee, aqs, mfm, ukf, jep, ykf, axl, rax, zrp, cbj, lbc, jug, ccp, xek, jdt,