Question about 2000 Volvo S40

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Service Light and S and W buttons

When I get in my vehicle,sometimes the service light is on and stays on for awhile. I have two buttons between my front seats. One says S and the other says W. What exactly do they do? I have a 2000 Volvo S40.

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Its traction control. W is Winter Mode and S is Sport Mode.

Posted on Mar 05, 2009

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I keep getting a message service stabilitrak


StabiliTrak Indicator Light: If the warning light does not come on then, have it fixed so it will be ready to warn you if there is a problem. If it stays on, or comes on when you are driving, there may be a problem with your StabiliTrak system and your vehicle may need service. When this warning light is on, the system is off and will not limit wheel spin. Adjust your driving accordingly.

This light will also flash when the StabiliTrak system is active. If the StabiliTrak system warning light comes on and stays on for an extended period of time when the system is turned on, your vehicle needs service.

The traction control part of StabiliTrak can be turned off by pressing and releasing the StabiliTrak button if both systems (traction control and StabiliTrak) were previously on. To disable both traction control and StabiliTrak, press and hold the button for five seconds.

Traction control and StabiliTrak can be turned on by pressing and releasing the StabiliTrak button if not automatically shut off for any other reason.

When the TCS or StabiliTrak system is turned off, the StabiliTrak light and the appropriate TCS off or StabiliTrak off message will be displayed on the DIC to warn the driver. Your vehicle will still have brake-traction control when traction control is off, but will not be able to use the engine speed management system.

If the StabiliTrak and/or Traction Control are not operating properly, I encourage you to take your vehicle in for inspection. A certified technician will be able to offer a more accurate diagnosis.

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Service light stays on


If the light is still on, but you don't think it's necessary you should see a mechanic or go to an auto parts store. They have readers that will tell you what is triggering it. That way you can figure out what you need to do to fix it. Sometimes it's something small but very simple. They should be able to help you.
http://www.westendmechanical.com.au/vehicle-servicing

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From FocusFanatics online - -

Resetting the oil life monitoring system
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{: ) A car swerving light on the instrument cluster is the StabiTrak indicator, sometimes called the traction control indicator. A wrench beside it tells it requires servicing.

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