Don't know about 2004, but the oil change alarm on earlier models could be
reset to a fraction of the full 5000 miles, in increments of 10%. If the
2004 model still has this feature, the most likely explanation would be that
it was reset to 40%. Your owner's manual will have the procedure.

"Tom from WI" > wrote in message
t...
> If it really monitored the "quality of the oil", it would turn itself off
> when the oil was changed. You wouldn't have to manually turn it off. I
> believe it is just based on the miles driven since it was last reset.
> Tom
> "Andy G." > wrote in message
> news:RMFhi.1859$MR5.1066@trndny02...
>> What I mean is that I checked to make sure it was reset after the change.
>> Is it possible that the oil could be uused up after 2000 miles? I
>> haven't changed my driving habits. Or is the monitor off calibration?
>> Thanks.