Hey guys, I'm new to this forum and I'm looking for some help. I can't get the cooling fans to come on on my 2006 IS 250. My A.C also stopped working around the same time this happened. I've checked the thermostat, coolant temperature sensor and the 3 fan relays. They are all good. But when I unplugged the coolant temperature sensor the fans came on and stayed on no matter what temp the car was or if the A.C was on. I checked the resistance on the sensor and it is changing with the temperature rise. Still with it plugged back in the radiator fans will not come on. Also, the heat on the passenger side gets significantly warmer than on the driver's side. Any help would be appreciated.