1994 Buick LeSabre Owner's Manual - Page 118

RUN position. It will stay on for 60 seconds once 90% of the oil life has been used and each time the engine is started after that. If the "Change Oil Soon" light is on continuously, there is a problem with the Oil Life Monitor System and service is required. After changing the engine oil, the system should be reset. This will cause the "Change Oil Soon" light to be lit for a bulb check period of three seconds. Battery Light I VOLTS I When you turn the key to RUN, this light will come on briefly, to show that your alternator and battery charging systems are working. If the light stays on, you need service and you should take your Buick to the dealer at once. To save your battery until you get there, turn off all accessories and set your air system to OFF. The reset button is in the glove box. With the ignition key in the RUN position, push the reset button, hold it in for at least 5 seconds but not more than 60 seconds. After 5 seconds, the "Change Oil Soon" light will flash 4 times and then go off. This indicates that the Oil Life Monitor System has been reset. 116