vactor

so, had the car in the garage over the winter and the Arctic Blast after blast, it turns out i had forgotten to connect my charger to the car. it's a 2009 S2000. after putting it back on the charger after it being dead for 5 months, it is now fully charged. i started it up and now the VSS light is on. i have not driven it yet, but was wondering how i can get the VSS light to go off and work again. any ideas?