damn thats cold... if i remember science class 0' celcius is 32' Farienhiet... so -15'C is like 10' Farienheit.. right

cold weather can really mess with a cars battery/electrical system and AT transmission fluid i believe is garenteed not to freeze down to -60'F .. but it will thicken as all liquids do in cold.. i dont think is a fluid problem though

i think it is something wrong with the electroinc sensor that makes the judgement call on when to shifrt gears for the tranny