The speedometer cable connects the transmission to the speedometer, allowing it to display the vehicle’s speed. Over time, the cable can wear, fray, or break, causing the speedometer to malfunction or stop working entirely. Replacing a faulty speedometer cable restores accurate speed readings, which are essential for safe driving and legal compliance.

What is a speedometer cable replacement?

This service involves removing the old or broken cable and installing a new one. The mechanic will also check the speedometer head and transmission connection to ensure the entire system works correctly.

Why do you need a speedometer cable replacement?

A faulty cable can cause inaccurate or no speed readings. Without a working speedometer, you won’t know your speed, which can increase the risk of accidents and lead to traffic violations. A replacement restores accuracy and safety.

Common signs you need a speedometer cable replacement

• Speedometer needle jumps, flickers, or moves erratically
• Speedometer shows no reading
• Unusual grinding or whirring noises from behind the dash
• Check Engine Light or speed sensor warning (in some vehicles)
• Odometer not recording mileage

What happens during a speedometer cable replacement?

A mechanic will:

1. Inspect the speedometer cable and related components
2. Disconnect the old cable from the transmission and speedometer
3. Route and install a new manufacturer-approved cable
4. Lubricate the new cable if required
5. Reconnect to the speedometer and transmission
6. Test drive to confirm smooth and accurate operation

How much does a speedometer cable replacement cost?

Replacement typically costs $200–$400, depending on the vehicle make and model. Labour time can increase costs if the cable is difficult to access.

Is it unsafe to drive with a faulty speedometer cable?

Yes. Without an accurate speed reading, you risk unintentionally speeding or driving too slowly, which can be unsafe and may result in fines. The issue should be repaired promptly.