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Adjust the mirror fully to face in the car & then face it up or down (can't remember which way) then you should be able to get a thin flat ended screwdriver in to release the catch that allows the...

That should switch them on Rob. The bulbs have maybe gone. Not sure how to change them. I didnt even know my S60 had them untill i pressed the button by mistake one day.

Have a look on second post of this link:
http://www.vpcuk.org/forums/showthread.php?t=26940

Depending on service history, i would start with a full service. Get your garage to run over the car with you, getting underneath to point out any nastys.

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