The outside temperature sensor is located in the front left wheel arch, behind the plastic lining.
Here are the step-by-step instructions on how to find it:
1. Open the hood of your car.
2. Locate the front left wheel arch.
3. Remove the plastic lining by pulling it out of its clips.
4. The outside temperature sensor is located behind the plastic lining, on the inside of the wheel arch. It is a small, round sensor with a wire coming out of it.
Here is a picture of the location of the outside temperature sensor on a 2001 Mercedes E320:
[Image of the location of the outside temperature sensor on a 2001 Mercedes E320]
