Parking on level ground makes it easier for you to access the VSS.
Make sure the hood is held securely in place before you lean into it to test the VSS.
Vehicle speed sensors can be installed in different locations depending on what make and model of vehicle you have, but they measure the rotation of the transmission, so they’ll generally be located on or next to the transmission. Consult your owner’s manual to find the location of your VSS.
The wiring harness may be located on the underside of the VSS. If you can’t grip the harness with your fingers, use a pair of needle-nose pliers to disengage it.
You may need to wiggle or slide the VSS out of its base. Don’t force or yank the VSS or you could damage it. Make sure you’ve engaged the sliding tab or the button that releases it. Some sensors may require you to remove 2 small screws to slide it out of place.
Make sure you don’t lose the screws or bolts so you can replace the sensor.
Push the leads into their slots completely. They may “click” into place when they’re fully connected.
Electrical devices, such as your VSS, use an AC current for power.
The plug uses a white signal output wire and a black ground wire to transmit signals from the device to your vehicle. You can also find plugs that contain the signal wire and ground online.
Make sure the red and black leads are securely connected.
Different sensors have differently sized slots, so try out a few bits until you find one that fits your VSS.
Give the bit a gentle tug to make sure it won’t fall out.
Start slowly and continue to increase the speed of the drill at a consistent pace so you don’t strip or damage the VSS.
If the voltage doesn’t increase or doesn’t display at all, then the VSS is damaged or faulty.
If your VSS isn’t functioning properly, replace it with the same make and model so it fits into your vehicle. Have a mechanic inspect your vehicle if your VSS is functioning but your speedometer still isn’t working properly.
