Ambient Air Temperature (AAT) Sensor
WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
The Ambient Air Temperature (AAT) sensor is a NTC thermistor that provides the ATCM with an input of external air temperature. The sensor is installed in the left door mirror and hardwired to the PCM, which broadcasts the temperature on the HS CAN powertrain systems bus. The ATCM receives the temperature via the HS CAN comfort systems bus from the BCM/GWM assembly.