Will the check engine light disable cruise control?
The check engine light is one of the most common indicators on your vehicle's dashboard, signaling that something might be wrong with your car's systems. But did you know that it can also affect other features, such as cruise control? In this article, we’ll explore the connection between the check engine light and cruise control, why this happens, and what you should do if you encounter this issue.
How the Check Engine Light and Cruise Control Are Connected
Modern vehicles are equipped with advanced onboard computers that monitor and control various systems. When the check engine light comes on, it indicates that the computer has detected an issue with the engine, emissions system, or other critical components. In many cases, this can lead to the cruise control system being disabled as a precautionary measure.
Here’s why this happens:
- Safety Concerns: If there’s a problem with the engine or emissions system, the vehicle may not perform as expected. Disabling cruise control ensures that the driver remains fully engaged and in control of the car.
- System Interdependence: Cruise control relies on input from various sensors and systems, such as the throttle, brakes, and engine. If one of these systems is compromised, the cruise control may not function properly.
- Preventing Further Damage: By disabling cruise control, the vehicle’s computer helps prevent additional strain on the engine or other components that might already be malfunctioning.
Common Issues That Trigger Both the Check Engine Light and Cruise Control Problems
Several issues can cause the check engine light to come on and simultaneously disable cruise control. These include:
- Faulty Sensors: Problems with sensors like the oxygen sensor, mass airflow sensor, or throttle position sensor can trigger the check engine light and affect cruise control functionality.
- Emissions System Issues: A malfunctioning catalytic converter or EGR (Exhaust Gas Recirculation) valve can lead to both warnings.
- Engine Misfires: Misfires caused by ignition coil or spark plug issues can impact engine performance and disable cruise control.
- Transmission Problems: If the transmission isn’t functioning correctly, the vehicle may disable cruise control to avoid further complications.
What to Do If Your Cruise Control Stops Working
If your check engine light comes on and your cruise control stops working, follow these steps:
- Check for Other Symptoms: Pay attention to any unusual sounds, smells, or performance issues that could help identify the problem.
- Use an OBD-II Scanner: If you have access to an OBD-II scanner, you can retrieve the diagnostic trouble codes (DTCs) to pinpoint the issue.
- Visit a Professional Mechanic: If you’re unsure about the cause or don’t have the tools to diagnose the problem, take your car to a trusted auto repair shop. At Kevin’s Autos, we specialize in diagnosing and repairing issues like these to get you back on the road safely.
Conclusion
While it can be frustrating to lose cruise control functionality when the check engine light comes on, this is a built-in safety feature designed to protect you and your vehicle. Addressing the underlying issue promptly is essential to restore both the check engine light and cruise control to normal operation. If you’re experiencing this problem, don’t hesitate to contact Kevin’s Autos for expert assistance. We’re here to help keep your car running smoothly and safely!
Frequently Asked Questions
Does the check engine light affect cruise control?
Most cars will disable cruise control if there is an active code or check engine light. It's specifically to try and prevent any further damage and to force the driver to check it.
What happens if I keep driving with check engine light on?
You may notice that other than the check engine light, your vehicle seems fully functional. Do not delay. Continuing to drive with the check engine light on can potentially cause serious damage and costlier repairs. Moreover, you will likely see diminished fuel efficiency and performance in your vehicle.
How do I know if my cruise control switch is bad?
The cruise control switch, typically located on the steering wheel, allows you to activate and set the cruise control. If this switch is faulty, it can prevent the system from working correctly. Test the switch by ensuring it clicks or toggles as it should. If it doesn't, you may need to replace it.
Which of the following actions will deactivate cruise control operation?
Applying the brake will deactivate the cruise control in a car. When the brake is applied, it signals the car's system to disengage the cruise control function, allowing the driver to manually control the speed.
How many miles does it take for the check engine light to reset?
30 to 100 miles
To make sure the check engine light does not reappear, it's recommended that you drive your car 30 to 100 miles. This enables the vehicle's “Drive Cycle” to reset, as the various sensors need time to recalibrate.
Can a blown fuse cause cruise control to stop working?
Common causes for your vehicle's cruise control to not work include: Bad Fuse - Common cause of failed cruise control system. When the fuse of the cruise control blows, the cruise control will stop working altogether.
How long can I drive my car with the check engine light on?
It is safe to drive your car for 50 to 100 miles. If there is an issue with the sensor, turning the check light off takes some time. But if it is a serious issue behind the checked light, it will probably start blinking. Blinking the check engine light indicates immediate attention.
What sensor controls cruise control?
Speed and distance sensors.
ACC uses information from two sensors: a distance sensor that monitors the gap to the car ahead and a speed sensor that automatically accelerates and decelerates your car. ACC uses information from these sensors to adjust your speed and maintain the set distance from the car in front of you.
What deactivates cruise control?
The desired cruising speed is maintained by modulating the engine speed. This speed can be adjusted, or cruise control can be cancelled by pressing 'cancel' or 'off'. The system is also cancelled if the driver applies the brakes.
What would cause the cruise control to stop working?
These issues could be something as simple as a loose wire or connector, or something more complicated like a damaged alternator, starter, or electrical short circuit. Problems with your vehicle's electrical system can be detected through a variety of warning signs.
