Where is the temperature sensor located in the new Passat?
2 Answers
The temperature sensor in the new Passat is located under the hood, at the upper left corner of the engine. Introduction to temperature sensors: They utilize various physical properties of materials that change with temperature to convert temperature into usable output signals. Temperature sensors are the core components of temperature measuring instruments and come in a wide variety. Based on measurement methods, they can be divided into two main categories: contact and non-contact types. According to sensor materials and electronic component characteristics, they are classified into thermistors and thermocouples. Modern temperature sensors are extremely compact in size, which makes them widely applicable in various fields of production practice, also providing countless conveniences and functionalities in daily life. Four main types of temperature sensors: Thermocouples, thermistors, resistance temperature detectors (RTDs), and IC temperature sensors. IC temperature sensors further include analog output and digital output types.
I remember last time I helped my neighbor check the air conditioning error on their new Passat, it turned out to be a temperature sensor issue. There are two key temperature sensor locations that are particularly easy to find on this car: the outside temperature sensor is usually located behind the front bumper grille, attached to the inner side of the grille—just remove the plastic cover and you'll see a small black probe; the inside sensor is hidden inside the dashboard, requiring the glove box to be removed before you can spot it clipped next to the air conditioning duct. The sensor placement on this generation of Passat is quite reasonable, and replacing them yourself is of moderate difficulty, but be very careful not to break the clips during disassembly. If you notice the air conditioning fluctuating between hot and cold or a sudden increase in fuel consumption, nine times out of ten it's this little guy acting up.
