These vehicles use systems that inform the driver when an oil change is needed. This indicator should be reset after every oil change. There are some variations to the reset procedures depending on the make, model, year and the vehicle's optional equipment. The vehicle's owner's manual should be consulted because it will help identify the system used on your specific vehicle, engine and option combination.
One version of the system is called the Change Oil Soon Indicator. It predicts when the oil's remaining life is almost up. The system predicts remaining oil life using travel distances, coolant temperature, engine RPM, and vehicle speed inputs. This indicator alerts the driver to change to oil on a schedule consistent with the vehicle's driving conditions.
Another variation is called the Oil Life Monitor. The oil life monitor shows the percentage of the oil's remaining useful life. The system predicts remaining oil life using travel distances, coolant temperature, engine RPM, and vehicle speed inputs. This monitor should also be reset after every oil change.
Change Oil Soon Indicator
The CHANGE OIL SOON indicator should come on as a bulb check when the engine is first started. If this indicator stays on for approximately 20 seconds when the ignition is first turned ON , change the engine oil and filter. When to change the engine oil depends on driving habits and conditions because they affect engine speed, coolant temperature and vehicle speed. Because of this, the CHANGE OIL SOON indicator may come on as early as 2,000 miles (3,200 km) or less under harsh driving conditions. Reset this indicator after every oil change using the following procedure
- Turn the ignition to the ON or RUN position, WITHOUT STARTING THE ENGINE.
- Fully press and release the accelerator pedal three times within five seconds.
- If the CHANGE OIL SOON indicator flashes two times. The system is reset.
- If the CHANGE OIL SOON indicator comes on and stays on for five seconds, try the reset system again.
Oil Life Monitor
These vehicles are equipped with an engine oil life monitor. The engine oil life monitor will show when to change the engine oil and oil filter. This will usually occur between 3,000-7,500 miles (4,800-12,000 km) since the last oil change. Under severe conditions, the indicator may come on before 3,000 miles (4,800 km). Never drive this vehicle more than 7,500 miles (12,000 km) or 12 months without an oil and filter change. The engine oil life monitor will not detect dust in the oil. If the vehicle is driven in a dusty area, be sure to change the oil and filter every 3,000 miles or sooner if the CHANGE OIL indicator comes on. Reset the oil life monitor when the oil and oil filter has been changed. Use the following procedure.
- Turn the ignition switch to the ON position, but DO NOT START THE ENGINE.
- Fully depress and release the accelerator pedal slowly three times within 5 seconds.
- If the CHANGE OIL (some instrument panels may have a variation of this warning, such as CHANGE OIL SOON, or CHG OIL SOON) indicator flashes (usually two times), the system is resetting.
- Turn the ignition switch to the OFF position after the indicator has finished flashing, then start the vehicle. If the CHANGE OIL indicator comes back on, the engine oil life monitor has not been reset. Repeat the procedure.
If the vehicle is equipped with the U20 option, which is an instrument cluster containing gauges for oil, coolant, temperature, volts, trip odometer, tachometer and fuel data display, the vehicle has an oil life monitor. The oil life monitor shows an estimate of the oil's remaining useful life. When the oil life index is less than 10%, the display will show OIL LIFE LOW. Reset this monitor after every oil change using the following procedure.
- Locate and press the Driver Information Display switch RESET button.
- Hold the reset button for more than five seconds while the oil life monitor is being displayed, or until the oil life percentage changes to 100%.