Looks like you have an 05 Gallardo.... That is the lift button - it will raise the front end of the car for clearance going up inclines, etc. If it is not an 05 - than I have no idea... Have not seen that button on an 04...
Thank you Richard. Unfortunately I don't have a Lambo, but it is on an 05 car. I'd spotted it on this car at SportAuto.com Just doing a little day dreaming...