On my '95 850 it is every 10,000 miles.
On my '01 XC70 it is every 7,500 miles.
On turbos it is more often.
There are 2 different lights:
Service light indicates routine service. It is triggered by the
odometer. It is predictable and can be anticipated.
Check Engine light indicates the computer has detected an abnormality.
It usually has a sense of urgency connected with it.
Cheers, Steve Henning in Reading, PA, USA
Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
You have a warranty, why guess--bring it to the dealer!
Quite often the light will come on if the fuel tank cap is not tightened
fully so it clicks, however in the very unlikely chance that there is a
serious issue with your new XC70 I would strongly suggest that you bring it
to the dealer--they should be able to arrange a while you wait appointment
or perhaps a loaner.
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