Stand in front of your car. On the driver side of the bumper, next to the foglight you will find a plastic cover with a hole in it. This is the where your external temperature sensor is housed. If you run your hand along the edge of the cover, you'll notice a small button you can press in and the cover will pop out. Then you can access the sensor and its wiring. There is, BTW, only one ambient temperature sensor. HTHOriginally Posted by Kibokojoe