What is a cruise control cable?
Your car’s cruise control cable is a braided steel cable that holds the throttle open when the cruise control system is active.
It looks and works very similar to the throttle cable that connects your accelerator pedal to the throttle. Instead of attaching to the gas pedal, however, the cruise control cable connects to the cruise control module on one end and the throttle on the other.
When you activate the cruise control system, the cruise control module engages and pulls the cable to open the throttle, maintaining speed without using the gas pedal.
The cruise control cable is a simple device, but it can deteriorate over time, and you should get it serviced periodically. A functioning cruise control system is not necessary to drive your car, but if the cable breaks while cruise control is active, you could quickly find yourself in a dangerous situation.
When should I replace the cruise control cable on my car?
The most common symptoms of a broken or faulty cruise control cable include:
Stuck throttle: If your throttle is stuck, you’ll notice a jerk during acceleration or when activating cruise control. This is a dangerous symptom and can have severe consequences if the problem is left unaddressed.
Nonfunctional cruise control system: If your cruise control system will not engage, there is likely a connection problem with the cruise control cable.
Accelerator pedal gets stuck: If your accelerator pedal feels stuck, your cruise control cable may be broken or disconnected, or your throttle body has lost pressure from the cruise control servo.
Keep in mind: Newer vehicles typically feature an electronic throttle actuator or cruise control actuator rather than a cruise control cable, which is common in older vehicles. The electronic throttle actuator is responsible for controlling the cruise control system in modern vehicles, so if you experience any of the symptoms above in a newer car, the issue may be with your electronic throttle actuator instead of a cruise control cable.
How often should a cruise control cable be replaced?
Cruise control cables are known for seizing up over time, but they usually resume normal operation after lubrication is applied. Cruise control cables should be inspected and lubricated regularly, but if your cruise control cable continues to malfunction after regular maintenance, there could be a bigger issue.
With this said, cruise control cables should last the lifetime of your vehicle. There isn’t a prescribed replacement interval, so you’ll need to keep an eye out for signs of deterioration.
Can I replace my cruise control cable myself?
Replacing a cruise control cable involves a comprehensive and complete understanding of your vehicle’s mechanical and electrical composition. If you’re well-versed in car engines and repairs, you may be able to change your cruise control cable on your own. For most drivers, it’s best to get a certified mechanic on the job.