1996 Oldsmobile Aurora Owner's Manual - Page 125

If the coolant temperature is over 261 O F ( 127O C), the message HOT...STOP ENGINEwill appear.It means that your engine coolant has overheated. If you have been operating your vehicle under normal driving conditions, you should pull offthe road, stop your vehicle and turn off the engine as soon as possible. In "Problems on the Road," this manual shows what to do, See "Engine Overheating" in the Index. Malfunction Indicator Lamp (Service Engine Soon Light) Your Aurora is equipped with a computer which monitors operation of the fuel, ignition and emission control systems. If your coolant level is low, the message LOW ENGINE COOLANT will appear on the Driver Information Center. Check your coolant level as soon as possible. See "Engine Coolant" in the Index. SERVICE ENGINE SOON This system is called OBD I1 (&-Board Diagnostics-Second Generation) and is intended to assure that emissions are at acceptable levels for the life of the vehicle, helping to produce a cleaner environment. (In Canada, OBD I1 is replaced by Enhanced Diagnostics.) The SERVICE ENGINE SOON light comes on to indicate that there is a problem and service is required. Malfunctions often will be indicated by the system before any problem isapparent, which may prevent more serious damage to your vehicle. This system is also designed to assist your service technician in correctly diagnosing any malfunction.