Where are the sensor(s) for the smart key? I just got my car back from being serviced and the smart key will hardly work at all. It has always worked from tremendous distances and at virtually any angle. Now, I have to be standing next to the driver's side of the car, and even then it will only work sometimes. I have no idea what the service folks could have done (normal B sevice and playing with a right headlight problem), but I figure its got to be simple, like the sensor in the car is covered. The batteries are fine. Any thoughts??