How do I know if my cruise control is working?
Cruise control is a convenient feature in many modern vehicles that allows the driver to maintain a constant speed without continuously pressing the accelerator pedal. If your cruise control is not functioning properly, it can be frustrating and potentially unsafe. Here's how you can check if your cruise control is working as it should.
Checking Cruise Control Functionality
To determine if your cruise control is working, follow these steps:
- Locate the cruise control buttons or switches on your steering wheel or dashboard. These typically include a "Set" button, "Resume" button, and "Cancel" button.
- Start your vehicle and ensure it is in drive (or the appropriate gear for your transmission).
- Press the "On" or "Activate" button to turn on the cruise control system.
- Accelerate to the desired speed, then press the "Set" button. The cruise control should maintain that speed without you pressing the accelerator.
- Try using the "Resume" button to return to the previously set speed, and the "Cancel" button to disengage the cruise control without turning off the system.
If the cruise control system is functioning correctly, you should be able to set, maintain, and adjust the speed using the various buttons and switches. If the system does not respond as expected, there may be an issue that requires further troubleshooting or repair.
Common Cruise Control Issues
Some common problems that can affect cruise control functionality include:
- Faulty cruise control switch or button: The buttons or switches used to activate and control the cruise control may become worn or damaged over time, preventing the system from responding properly.
- Wiring or electrical issues: Problems with the wiring or electrical components that connect the cruise control to the vehicle's computer can cause the system to malfunction.
- Brake system issues: The cruise control system is designed to disengage when the brake pedal is pressed. If there are issues with the brake system, the cruise control may not function correctly.
- Software or computer problems: The cruise control is controlled by the vehicle's onboard computer, so any software or computer-related issues can affect its performance.
If you encounter any problems with your cruise control, it's best to have your vehicle inspected by a qualified mechanic to diagnose and resolve the issue.
How do you diagnose cruise control not working?
Start by testing the cruise control set switch with a multimeter for continuity when pressed. Check the brake light switch wiring and connectors, as they disable cruise control if faulty. Inspect the cruise control module and related fuses for damage, especially after recent AC repairs that may have disturbed wiring.
How do I know if my cruise control fuse is blown?
There are two places on the back side of each fuse to probe; if the test light does not light on both sides of the fuse you will find that the fuse is most likely blown. If the test light does not light on either side of the fuse; you will need to look in the owner's manual to see what that circuit feeds.
How much is it to fix cruise control?
The cost to fix cruise control varies widely, from about $150 to $400 for minor issues like a switch or vacuum leak to over $2,000 for major problems like replacing an Adaptive Cruise Control (ACC) radar sensor, which can cost $500 to $1,500 or more for the part plus labor. Factors like the car's make and model, the specific problem, and the type of cruise control system significantly influence the final price.
Cost breakdown by issue
- Minor repairs: If the problem is a simple one, such as a faulty brake switch or a minor vacuum leak, the cost is typically between $150 and $400.
- Component replacement: Replacing a specific part like a cruise control switch or cable can range from under $20 to several hundred dollars for the part alone, plus labor. The total cost depends on the part's price and local labor rates.
- Advanced system repairs: For modern Adaptive Cruise Control (ACC) systems, repairs can be much more expensive. Replacing a radar sensor could cost anywhere from $500 to $1,500 or more, and may require additional calibration, which can add $100 to $200.
- Major malfunctions: For complex issues or older cars with mechanical components, costs can exceed $500, particularly for luxury or foreign cars.
Factors that affect the price
- Car's make and model: Newer, more complex, or luxury vehicles often have higher repair costs than older or less expensive models.
- Type of system: The complexity of your car's cruise control system is a major factor. A simple mechanical system will be cheaper to fix than an electronic one, especially an advanced ACC system that uses radar or cameras.
- Part needed: The specific part that needs replacement—from a simple switch to a complex sensor—will have a significant impact on the total price.
- Labor rates: Shop and dealer labor rates vary by location and the complexity of the repair. An hourly rate can range from $100 to $200, with a repair taking a couple of hours.
What you can do
- Get a diagnostic check: The first step is to have a professional mechanic diagnose the exact problem to determine the scope of the repair.
- Request a detailed quote: Ask for a specific quote for the parts and labor before authorizing any work to be done.
- Compare options: Compare prices between dealerships and independent mechanics. You can also research the cost of parts yourself to see if it's cheaper to purchase them and have an independent mechanic install them.
How to check if cruise control works?
While placing your hand on the servo, have someone turn on the ignition and turn the cruise control switch to the On position. You should hear and feel the solenoids in the servo click. This lets you know the switch is working and that you have power to the servo.
