I drove 30miles yesterday, and when arriving at the top of a multi story car park, my temp gauge was maxed out, and the engine was showing white smoke. Upon pulling over and checking the bonnet, I could see coolant overflowing from the overflow pipe in the bottle.   I let the car cool down for an hour and topped up the coolant. I checked the fans, and neither were working. I turned the AC on, and no fans came on (I thought a fan should come on at all times with AC?). I took it to the nearest