[Erastimus]

You are going to have a fire and then an explosion. The fire will be from a high resistance or short circuit in the steering column, which is what is heating up the key/fob. Then the air bag is going to go off while you are driving along. This is the explosion. Get it towed to the dealer and get the hot key problem fixed. The loss of coolant problem is slow to anger but an air bag explosion while driving along could be disastrous.