You get a light for low oil or for your oil change interval, whichever happens first. So, is the person who changes your oil resetting the oil change timer?
I think you do it with drivers door open, put key in and start engine, within the first 5 seconds, while your wrench is flashing, hold down the trip odometer post for like 3 seconds, then the mileage or kilometer number flashes on the indicator, then you turn the car off... something like that. Try it and let us know please.
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