scott.hall@comcast.net wrote:
> for what it's worth, on our previa there's a button on the
> display you push. you remove a little plug from the plexiglass
> over the speedo and push the button with a pda stylus (or
> paperclip, or whatever). light goes off.
>
> what I'd like to know is why it goes on to begin with. it isn't
> mileage, I've checked. the oil is changed at 3000 miles, and so
> as far as I can tell it isn't a sensor in the oil. it seems to
> go off about every 12-15k miles, though sometimes it seems
> sooner.
If the light goes on at variable mileage, but always in the 12K
miles range, my guess is that the computer is tabulating the time
the engine is running or is proportionally factoring mileage and
running time. The engine is still operating in traffic, even though
there's no mileage being accumulated. If it's working in that
fashion, it's a smart idea.
Cheers.
--
Michael D. Porter
Roswell, NM
Never let anyone drive you crazy when you know it's within walking
distance.
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