The Service Reset light comes on at regular mileage points to alert you to perform
necessary maintenance to keep your Volvo S80 running properly.
When you do the work yourself the light can be reset with these instructions.
Turn ignition switch to position I.
Press and hold the "odometer reset button".
Turn ignition to position II.
Continue holding day counter for about 10 seconds.
After the service reset flashes, release the day counter button.
You should hear 2 beeps to confirm the command was accepted.
Turn your Volvo S80 off and then on to confirm that the reset worked.