Mazda 2016 CX3 Owner's Manual page 267

Sunlight/Temperature Sensor
The climate control system measures
inside and outside temperatures, and
sunlight. It then sets temperatures inside
the passenger compartment accordingly.
CAUTION
Do not obstruct either sensor,
otherwise the climate control system
will not operate properly.
Sunlight sensor
Interior temperature sensor
Climate Control System
I n f o r ma t i o n P r o v i d e d b y :
Interior Features
5–13