How Long Does a Speedometer Sensor Last?

While a mechanical speedometer will use a speedometer cable attached to the driveshaft and transmission, that’s not the case with an electronic speedometer, such as is used in most modern vehicles. These use a speedometer sensor. It’s mounted to the transmission, but there is no cable that connects it to the back of the speedometer housing. Instead, it sends a series of pulses to the car’s computer, which interprets those signals, and then displays them as the speed at which you’re traveling.

Each vehicle requires a specific speedometer sensor calibrated for it’s unique specifications. In addition, the speedometer sensor is in use at all times when your car is on the road. If you’re moving, the sensor is sending signals to the computer. The good news is that mechanical failure isn’t a problem (it’s an electronic component). The bad news is that electronic components can still fail early.

Under ideal circumstances, your speedometer sensor should last for decades, if not the life of the car. However, premature failure does happen. Damage to the wiring harness, exposure to caustic fluids, and many other things can cause problems with the sensor. Debris can also build up around the base of the sensor, which actually mounts inside the transmission housing.

If your speedometer sensor fails, your speedometer itself will be unreliable. It might not work at all in a worst-case scenario. Knowing a few common symptoms to watch for can help make this situation easier to deal with. They include:

  • Speedometer doesn’t work
  • Speedometer is inaccurate (reading too high or too low)
  • Speedometer needle bounces, or digital readout changes randomly
  • Check Engine light is on
  • Cruise control doesn’t work

If you’ve noticed any of these symptoms, or believe that there’s a problem with the speedometer or speedometer speed sensor, YourMechanic can help. One of our mobile mechanics can visit your home or office and diagnose the problem, and then replace your speedometer sensor.


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Recent Speedometer Sensor Replacement reviews

Excellent Rating

(73)

Rating Summary
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Rigoberto

11 years of experience
739 reviews
Rigoberto
11 years of experience
Jeep Liberty V6-3.7L - Speedometer Sensor - Chicago, Illinois
Not only did Rigobertos did an excellent job in repairing my car, I actually saved some money from the original price quote.
Jeep Liberty - Speedometer Sensor - Chicago, Illinois
Rigobertos brought my car back to life after it was not drivable for five months. His knowledge and professionalism is top notch.

Jose

15 years of experience
213 reviews
Jose
15 years of experience
Pontiac Grand Prix V6-3.1L - Speedometer Sensor - Duluth, Georgia
Jose was very professional, was on time (actually a bit earlier than expected which was just fine for me) and did the job in a timely fashion. There was a mix up with the part but he went out and was able to get the correct one, at no extra charge for me, and he even made sure that everything was working afterwards. Did a great job and would definitely recommend to friends and family.
Buick LeSabre - Speedometer Sensor - Roswell, Georgia
Jose was punctual and professional. He did an excellent job fixing our speedometer. We've already booked him for another gig. Thank you for this service!

Chris

22 years of experience
2068 reviews
Chris
22 years of experience
Chevrolet Silverado 2500 HD V8-6.0L - Speedometer Sensor - Menifee, California
Good knowledge of vehicle , answered all my questions , knew what he talking about , very competent mechanic . I highly recommend him .

Collins

12 years of experience
354 reviews
Collins
12 years of experience
Volkswagen Jetta L4-2.0L - Speedometer Sensor - Atlanta, Georgia
Collins was very professional and his knowledge for repairing my Jetta was phenomenal. She's back purring again. Thanks Collins!! You get a 5⭐ rating from me. I hope you will be there for us if needed in the future. Thanks for being an AWESOME mechanic!

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