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The speedometer cable attaches on one end to a drive gear in the transmission, which rotates at a speed corresponding to the vehicle’s speed. It is routed up from the transmission to the instrument cluster, or dashboard. The cable is a solid strand of relatively rigid metal and is surrounded by a protective sheath known as the cable housing. It prevents the speedometer cable from being damaged, seized, and kinked. Along with the speedometer, this piece works to make sure the driver is always informed about the speed they’re traveling at. If the speedometer cable and housing is damaged or seized, the speedometer will not read accurately. You may also hear a whirring or grinding noise in the dash.
The speedometer cable and housing cannot be serviced, as it is buried deep inside the dash of your vehicle. It should last the life of your vehicle, though if you notice related symptoms, you should have one of our expert mechanics diagnose it.
Because the speedometer cable and housing directly correlates to your speedometer operation, it should be replaced as soon as possible. An incorrectly operating or broken speedometer cable will put you at greater risk of traffic/speed violations.