With '01:
Start with key in Position 1:

1) key in Position 1
2) press and hold tripmeter reset button
3) turn key to position 2 while still holding reset button
4) when "service" light flashes release button
5) done



'02 and later S60's do not have a service light, but a maintenance reminder.
The correct procedure is:
1. Turn the ignition key to position I
2. Press and hold the trip reset button and wait for the odometer to set to zero
3. Turn the ignition key to position II, and watch the odometer
4. When the previously displayed miles reappears, release the trip reset button
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1998 S70 T5 Emarald Green Metallic, 2004 V70 2.5T Ruby Red, Previous Owner of Black '94 850 Turbo Wagon