2021 Jeep Wrangler Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2021 Jeep Wrangler and How to Fix Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2021 Jeep Wrangler cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2021 Jeep Wrangler cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the initial diagnostic steps to take when the cruise control isn't working on a 2021 Jeep Wrangler?

When your cruise control isn't functioning on a 2021 Jeep Wrangler, it's important to approach the diagnosis methodically, starting with the simplest solutions. Begin by checking the cruise control fuse in the fuse box; a blown fuse can easily disrupt the system. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent activation. The speed sensor is another critical component, so verify its operation since it directly influences cruise control functionality. Additionally, examine the brake pedal switch, as a malfunction here can disengage the cruise control. If these initial checks do not resolve the issue, consider using a diagnostic scanner to look for any error codes that may indicate deeper problems. Finally, inspect the wiring connections related to the cruise control system for any loose or damaged wires. By following these steps, you can effectively diagnose and potentially resolve the cruise control issue on your Jeep Wrangler, saving time and money on repairs.

What are the common problems that could cause the cruise control to stop working in a 2021 Jeep Wrangler?

When dealing with cruise control issues in a 2021 Jeep Wrangler, it's essential to understand the common problems that may arise. One frequent culprit is a faulty brake light switch, which can prevent the cruise control from engaging since it is designed to deactivate when the brake pedal is pressed. Additionally, speed sensor issues can disrupt the system's ability to maintain a constant speed, leading to failure. A blown fuse in the vehicle's electrical system can also interrupt the cruise control function, making it crucial to check the fuses if you encounter problems. Furthermore, a malfunction in the throttle control system, such as a faulty throttle position sensor, can hinder the cruise control's performance. Lastly, vacuum leaks in the engine can significantly affect the cruise control system, causing it to stop working properly. If you experience any of these issues, it is advisable to conduct a thorough inspection or consult a qualified mechanic to accurately diagnose and resolve the problem.

How urgent is it to repair the non-functioning cruise control in a 2021 Jeep Wrangler?

When evaluating the urgency of repairing the non-functioning cruise control in your 2021 Jeep Wrangler, it is crucial to recognize the potential safety risks associated with a malfunctioning system. A properly functioning cruise control not only enhances driving comfort during long trips but also helps maintain a consistent speed, reducing the likelihood of sudden speed changes that could lead to accidents. Additionally, the inconvenience of driving without this feature can detract from the overall driving experience, particularly on extended highway journeys where maintaining speed is essential. Furthermore, neglecting to address this issue can negatively impact the vehicle's resale value; prospective buyers are often wary of vehicles with known mechanical problems. Therefore, prioritizing the repair of your cruise control system is advisable to ensure your safety, enhance driving comfort, and protect the investment you've made in your Jeep Wrangler.

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