Vehicle Questions and Answers
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In a Subaru Legacy, you can locate the speed sensor on the transmission and transaxle's output shaft. It's responsible for measuring how fast the output shaft is rotating and relaying that information to your car's computer (ECU) to display the speed on the speedometer. If you're facing issues with the speedometer not working, it's likely due to a fault with this sensor. Start by inspecting the wiring to ensure it's securely connected and undamaged. If the sensor is defective, it will need to be swapped out, usually costing around $100 for the replacement.
The speed sensor in the Subaru Legacy can be found on the right rear side of the transmission close to the tail shaft, situated under the car's hood.