ah right see now was on my phone when read it
wouldn't think the cold weather would have made a problem unless it could be moisture in the connections somewhere
does the M light come up on the dash
here a few diagrams from toyo diyhttp://www.toyodiy.com/parts/p_J_199811 ... _4504.htmlhttp://www.toyodiy.com/parts/p_J_199811 ... _8410.html
so as you can see there are a few parts to it, have you tried reading error codes if any have come up?
would think it would be something to do with steering wheel if everything else is all good