If you’ve ever had to take your car in for maintenance, you know that one of the most common problems is a bad speed sensor. If your sensor isn’t working correctly, your car won’t be able to operate at the correct speed and can get damaged as a result. In this article, we’ll discuss how a speed sensor works and what may cause it to fail.
What is a Speed Sensor?
A speed sensor is a device that is used to measure the speed of a vehicle. It is typically located on the axle of the vehicle, and measures the speed in either meters per second or miles per hour.
How to Replace a Speed Sensor on a Car
Replacing a speed sensor on a car can be a relatively easy DIY project, depending on the make and model of your vehicle. Here are instructions for replacing a speed sensor on a BMW 3 series:
1. Locate the speed sensor in question. It is typically mounted near the rear axle. To access it, remove the wheel coverings and debris around the axle.
2. Remove the old sensor by unscrewing its two Phillips screws. Save the wires and plastic casing for re-use.
3. Install the new sensor by screwing it into place using the original screws and wires. Be sure to tighten them evenly using a wrench or small screwdriver.
4. Reconnect the wires to their respective connectors, then reinstall the wheel coverings and debris around the axle.
What to Do If Your Car Doesn’t Run Properly After Replacing the Speed Sensor
If you’ve replaced your car’s speed sensor and the car still doesn’t run properly, there are a few things you can do to troubleshoot the issue. First, check the battery voltage and make sure it’s at or above 12 volts. If the battery is low, the car may not be able to start because the engine won’t receive enough power to turn over. Next, check for codes related to the speed sensor by scanning your vehicle’s diagnostic system. If you don’t receive any codes, then your next step is to replace the speed sensor.
Conclusion
If you are wondering if your car will work without a speed sensor, the answer is yes. However, this might not be the best option for you if you plan on driving in wet or icy conditions. If you are unsure whether or not your car will work without a speed sensor, it’s always safest to contact your car manufacturer to ask.