automotive sensors

In the countless years we have been in the used car parts industry, we were given the opportunity to witness how the cars before have truly changed and improved into more efficient, more economical, and more intelligent vehicles than ever.

Before, for you to be able to maintain your car well, you’d have to check it almost everyday. Inspect and see if there’s any sign of trouble. Because if you don’t you won’t be able to really tell if there’s an issue unless the problem has already blown onto your face. Those days are basically gone now. All thanks to automotive sensors.

Almost all our auto parts are now equipped with intelligent automotive sensors to effectively help car drivers and owners. They are the ones responsible for knowing what’s going on and if there’s a problem on the way. Simply put, the make driving and car maintenance a whole lot easier.

Now as your trusted Aussie auto parts recyclers and used car parts providers, we are here to give you an easy-to-comprehend list of some of the most useful sensors we have in our cars today. Let’s all learn about what these “little helpers” really do for our cars.


Apart from your speedometer, there are other sensors that aid in analysing your vehicle as it runs on the road:

  • VSS or Vehicle Speed Sensor – (in A/T cars) sends a signal to the Transmission Control Unit to determine the current speed of the vehicle. The TCU then uses this info in order to determine whether a gear change is already needed.
  • WSS or Wheel Speed Sensor – these sensors help determine whether the car is going uphill or downhill; so the car could gear changes according to road speeds
  • TPS or Throttle Position Sensor – the information from these sensors is used to adjust fuel delivery to compensate for throttle opening. The TCU can also use this info to determine vehicle acceleration.
  • TCS or Traction Control System – It detects unfavorable road conditions so the TCU can modify shift programmes early.
  • Cruise Control System – information from this system’s sensors to automatically control the vehicle’s speed. It takes over the throttle to maintain a steady speed set by driver.
  • Crankshaft Position Sensor – these sensors are used by the control module to calculate the engine speed and cylinder position. It also uses the information for ignition control.


  • Oxygen Sensor – these sensors monitor the content of the exhaust gases that leave the engine. It helps the engine computer calculate fuel delivery and mixture.
  • Air Flow Meter – measures how much air is flowing through any tube. It measures the quantity of air going into the internal combustion engine.
  • Mass Air Flow Sensor or MAF – monitors the volume as well as the density of the air entering the engine. It works with the oxygen sensor. The information on air mass is essential so that the ECU will be able to balance and deliver the correct fuel mass to the engine.
  • Manifold Air Pressure Sensor or MAP – the manifold pressure information gathered by these sensors are used to calculate air density. The computer senses air pressure variations to to deliver the right amount of fuel and spark.


  • Intake Air Temperature Sensor – information collected by these sensors are used so that the computer can regulate exhaust gas recirculation for cleaner tailpipe emissions. As the temperature increases, sensor resistance decreases and signal return voltage will increase.
  • Engine Coolant Temperature Sensor – as it name implies, they measure the temperature of your coolant. The sensors send the info to your TCU so that it can adjust the car’s ignition timing and fuel injection. It may also be used to switch on the cooling fan.
  • Transmission Fluid Temperature Sensor – this helps determine the fluid temperature in the transmission. This may also be used to determine the regulation of the torque converter and lock-up clutch.


  • Blind Spot Sensors– these help detect vehicles in the driver’s blind spots in the sides and the rear. The info is used to prevent possible collisions by sending visual, vibrating, and audible warnings.
  • Lane keep/departure sensors – sensors smartly determine when the vehicle is slowly beginning to move out from its lane. It is specially designed to prevent accidents caused by drowsy or drunk driving.
  • Back-up and Parking Sensors – they are effective ultrasonic proximity detectors in order to alert the driver about obstacles during parking. They measure the distances to nearby objects then emit pulsating sounds to notify the driver. The faster the tones, the closer an object is to hitting or bumping your car.

There are so many automotive sensors that we use today so we could easily drive and use our cars. We just can simply name and explain them all to you for now. What’s important is that we all understand how these automotive sensors in our car parts play a significant role in our safety, efficiency, and convenience.

Should you need to replace any kind of sensor in your vehicle, don’t hesitate to tell Advance Auto Parts about it. We are a leading offline and online auto parts supplier that proudly provides owners with top quality yet cheap auto spares and consumables.

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