Where is the car temperature sensor located?

[SanClara]

In general, the outdoor temperature sensor is installed at the air intake grille of the front bumper. This sensor is a component of the automatic air conditioning system, and its main function is to provide the ECU with the temperature signal outside the vehicle. The ECU compares this signal with the interior temperature signal to determine the temperature inside the vehicle, meeting the needs of the occupants. Additional information: 1. Working principle: It converts light, electricity, temperature, pressure, time, and other information during vehicle operation into electrical signals, which are then input into the vehicle's computer system. The computer then performs calculations and analysis based on pre-stored programs to determine the vehicle's operating status. 2. Structural classification: According to its structural type and the detection principle of air intake, it can be divided into four types: vane-type air flow sensor (MAF), Karman vortex-type air flow sensor (MAF), hot-wire-type air flow sensor (MAF), and hot-film-type air flow sensor (MAF). Currently, the most commonly used types are hot-wire and hot-film.

[SanAngelina]

Speaking of this issue, I've encountered a similar situation before while driving. Automotive temperature sensors actually come in several types: The most common is the engine coolant temperature sensor, typically located near the engine block or intake manifold, used to monitor engine heat and prevent overheating problems; The ambient temperature sensor is often installed in the front bumper or exterior rearview mirrors, responsible for displaying outside weather conditions; The cabin temperature sensor is usually positioned below the dashboard or near air vents, regulating air conditioning airflow. These locations are chosen to accurately measure temperatures in different zones. Once my car's AC was blowing air randomly, which turned out to be dust accumulation around that sensor. During maintenance, it's recommended to clean the area around sensors, keep them unobstructed by debris, and regularly check wiring connections. Though small, temperature sensors protect both engine and fuel efficiency - malfunctions may trigger warning lights or increase fuel consumption, so it's best to address issues promptly.

[McRachel]

My DIY car repair experience tells me that the location of temperature sensors depends on their specific purpose. The coolant temperature sensor is fixed on top of the engine or on the coolant pipeline, close to the cylinder block; the intake air temperature sensor is usually installed inside the air filter box or near the intake manifold, measuring the temperature of the intake pipe; most external environment sensors are integrated into the vehicle's front bumper grille or the base of the rearview mirror, providing real-time weather data feedback; cabin interior sensors are located behind the dashboard assembly or in the central console, used for adjusting air conditioning comfort. The positioning design ensures measurement accuracy—if displaced or affected by heat sources, it can lead to inaccurate temperature readings. Having replaced them myself, I've noticed that sensors in older cars are prone to corrosion. I recommend checking the seals during rainy seasons to avoid short circuits. These maintenance tips can extend sensor lifespan and reduce unnecessary issues.

[MacCalvin]

The distribution of automotive temperature sensors is carefully considered. The engine coolant sensor is typically located at the engine water pipe interface or near the cylinder head to accurately monitor thermal conditions. The ambient temperature sensor is usually installed inside the front bumper or within the rearview mirror to provide external temperature readings. The cabin temperature sensor is positioned beneath the dashboard to control air conditioning settings. Optimized placement prevents misleading readings, such as avoiding proximity to exhaust pipe heat sources, ensuring real-time data accuracy. If a sensor fails, vehicle performance may degrade, manifesting as air conditioning malfunctions or warning light activation, requiring diagnostic tools for troubleshooting.