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Longitudinal Acceleration Sensor Guides

Tips When It Comes to Longitudinal Acceleration Sensor Purchases

A longitudinal acceleration sensor or accelerometer is part of a set of sensors (which also include the lateral accelerometer, roll rate, and yaw rate sensors) that are all responsible for the stability of your car as it moves. They're responsible for ensuring that your vehicle body movement is as balanced and controllable as possible by steering wheel, which in turn should ensure your safety and prevent potential accidents where your automobile skids out of control over slippery terrain.

Dos and Don'ts of Buying a Longitudinal Acceleration Sensor

In design, the longitudinal accelerometer is quite similar to its lateral counterpart. However, it provides additional info about road pitch and senses stability as your vehicle accelerates or speeds up. Here are the dos and don'ts when replacing a faulty longitudinal acceleration sensor.


  • Check the specs of the longitudinal accelerometer that caught your eye when browsing ecommerce sites for car parts. You should specifically search for sensors that measure G-forces in forward and reverse (longitudinal) directions in four-wheel-drive or 4x4 vehicles.
  • Get a piezoelectric longitudinal accelerometer if you want a lightweight and compact size of sensor in your car. However, they can't do steady-state acceleration measurements. Get a piezoresistive longitudinal acceleration sensor if you instead want good linearity, large signal amplitude, and measurement of both dynamic and steady-state accelerations. However, it's sensitive to temperature variations.
  • Buy a variable capacitance longitudinal accelerometer if you want low temperature sensitivity, low power dissipation, linear output, good DC response, and good sensitivity. However, it's susceptible to electromagnetic interference. Finally, buy a variable reluctance longitudinal acceleration sensor since it changes coil inductance caused by mass displacement and is made of magnetic material to detect mass positioning.
  • Since the yaw sensor, roll rate sensor, and lateral acceleration sensor all come in a nice, neat cluster that make up your vehicle's electronic stability control system, it stands to reason that you should purchase a longitudinal acceleration sensor that's compatible with all of these other sensor parts.
  • Make a price comparison chart and compare by quality and cost. Some longitudinal acceleration sensors are better priced or more cost-effective than others. On one site, the sensor might cost $76. On another site, it could go all the way up to $395. It could even cost as cheaply as $25, which is perfect if it's the perfect fitment for your jeep, truck, or van.


  • DON'T hesitate to replace your longitudinal accelerometer if it ends up interfering with the rest of your vehicle's electronic stability control assembly. Your sensor should not interfere with your lateral accelerometer's ability to measure side-to-side (lateral) G-force on the body of your vehicle as it turns. Ditto with your yaw rate sensor and its measurement of rotational G-force in relation to the automobile's center of gravity.
  • DON'T just order the cheapest longitudinal acceleration sensor you could find. While a more affordable sensor that's almost twice as cheap as another might appear the better option, more affordable alternative, a quick look reveals it claims to be an electronic brake control lateral, yaw, and longitudinal acceleration sensor, which means the second one is the more specific and genuine fit for your needs.
  • DON'T buy a used longitudinal acceleration sensor without knowing where it's from or if it was stolen from a car and already damaged. You should also avoid remanufactured sensors made of substandard materials in order to get you a product that's as cheap as possible. Take note of what they're made of.

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