I know there is a easy way to reset the service light, it goes on after I start the car and stays on for I think 2 minutes, how do you reset it?

 

You didn't mention a year.....

From IPD, the following;

HOWTO: Reset Service Reminder Indicator on 1998-2009 Volvos

Tuesday, August 25, 2009
Some 1998 and older models require a OBDII service light reset tool. You can probably have it reset for a marginal cost by a local Volvo dealership or Volvo specialty shop that has one of these tools.
1998 Volvo S80 Models

• Turn ignition switch to position I
• Press and hold the odometer reset button
• Turn ignition switch to position II
• After Service light flashes, release odometer reset button
• Turn ignition off
• Turn ignition back on to confirm reset

1999-2000 Volvo S70 / V70 / C70 Models

• Insert key in to ignition but don't turn it yet
• Press and Hold the odometer trip counter reset button
• Turn ignition switch to "run" position (Position II)
• After Service light flashes, release odometer reset button
• Turn ignition off
• Turn ignition back on to confirm reset

1999-2000 Volvo S80 Models

• Insert key and turn ignition switch to position I
• Press and hold odometer trip counter reset button
• Turn ignition switch to position II
• Continue holding odometer trip counter reset button for about 10 seconds
• After Service light flashes, release odometer reset button
• Should hear "beep-beep" to confirm command accepted

2001 Volvo S80 / V70 / S60 Models (May apply to S40/V40 also)

• The service reminder indicator lamp illuminates for 120 seconds when the ignition is first switched on.
• Insert key and turn Ignition Switch to position I
• Press and hold in the reset button for the trip odometer
• Turn the Ignition switch to position II (within 5 seconds)
• The service reminder indicator starts flashing when the reset button for the trip odometer has been pressed for 10 seconds
• Release the reset button for the trip odometer within 5 seconds. The instrument gives an audible signal when resetting has succeeded.
• If the trip meter reset button is not released within 5 seconds the indicator is not reset, but the indicator will stop flashing.

2002-2007 All Volvo Models

• The service reminder indicator lamp illuminates for 120 seconds when the ignition is first switched on
• Insert key and turn Ignition Switch to position I
• Press and hold in the reset button for the trip odometer
• Turn the Ignition switch to position II (within 2 seconds)
• Hold the reset button for the trip meter pressed in until the original trip counter value blinks and is redisplayed
  (For all vehicles 2003- a general yellow lamp will light when the reset button must be released.)
• Release the reset button for the trip odometer within 4 seconds. The instrument gives an audible signal when resetting has succeeded
• If the trip meter is already reset the reset button should be held in for a minimum of 10 seconds and a maximum of 14 seconds.
• If the reset button for the trip odometer is not released within 4 seconds, the service reminder indicator (SRI) is not reset.

2008-2009 Volvos with starter push button on dashboard

• The trip odometer must have at least 0.1 mile on it or the light will not reset.
• Get in vehicle and do not push down on the brake pedal
• Put the key in the slot and push the starter button once
• Press and hold down the odometer reset button
• While doing this, push the starter button again and hold for 2 seconds
• Keep the odometer reset button held in and watch the instrument cluster for the general warning indicator (I) to illuminate. When this happens, release the button.
• Turn the vehicle off then back on and verify the message is now out.