The speed sensor is a device located on the transmission case. It reads the speed of the wheel rotation while driving and helps maintain stability. If you notice any problems with the sensor, you should get it inspected and avail of speed sensor replacement service, if required.
What is the Speed Sensor?
The speed sensor is a type of tachometer that has a toothed ring and pickup. It is either located within the rear differential or inside the ABS. The speed sensor mounted on the transmission reads the rotational speed of the wheel and inform the computer when to release pressure to a wheel while using the ABS. And the differential-mounted speed sensor does the same along with the ring gear. This helps in maintaining stability while driving the car.
Why do you need Speed Sensor Replacement Service?
A broken speed sensor doesn’t pose any immediate danger. That’s the reason a lot of drivers postpone getting the speed sensor replaced. However, if it’s ignored for a longer time, the condition of your car would only worsen and it can affect critical vehicle systems like the speedometer and anti-lock brakes.
When to Replace the Speed Sensor?
It is worth mentioning that the symptoms of a failing transmission and a failing speed sensor are similar and can be confusing for the driver. The symptoms of a failed speed sensor are
- The odometer stops working
- The speedometer is not performing properly or isn’t working at all
- The cruise control isn’t functioning properly
- You are facing issues like reviving higher in shfting gears or the shift being rough
- Transmission is jumping gears
- There’s an issue with the vehicle idling
- You hear a rumbling sound from your car
- An unexpected loss of power in the vehicle
- A sudden drop in fuel efficiency
- Check Engine Light, Brake Light, or Anti-lock Warning Light is On
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How is it Done?
If you face any of the above symptoms, you should get an expert mechanic to check the transmission as well as the speed sensor and other connections to determine the problem.
If the problem lies in the speed sensor, it will be replaced in the following manner.
- Raise the vehicle on jack stands
- Locate the speed sensor and remove it from the rear axle housing
- Install the new speed sensor and connect it to the transmission
- Remove the vehicle from the jack stands
Final Words
If you notice any issues with the speedometer or odometer or other symptoms of a failing speed sensor, contact a mechanic. You can find verified and certified mechanics on Swezo. The mechanic will run a diagnostic to determine whether the problem lies in the speed sensor or the transmission. If the speed sensor has failed, they will replace it immediately.
