2021 Jeep Grand Cherokee Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2021 Jeep Grand Cherokee

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Reviewed by
Devin Cabugcal
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 Grand Cherokee 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 Grand Cherokee 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 troubleshoot the non-functioning cruise control in a 2021 Jeep Grand Cherokee?

When troubleshooting the non-functioning cruise control in a 2021 Jeep Grand Cherokee, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse can often be the simplest explanation for the malfunction. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent the system from engaging. The vehicle speed sensor is another critical component; verify that it is functioning correctly, as it provides the necessary speed readings for the cruise control to operate. Additionally, examine the brake pedal switch, which is designed to disengage the cruise control when the brake is applied; a faulty switch can lead to unexpected disengagement. Utilizing a diagnostic scanner to check for error codes can also provide insights into any underlying issues affecting the cruise control system. Finally, inspect the wiring and connections related to the cruise control for any signs of damage or corrosion, as these can disrupt the system's functionality. By following these steps, you can effectively diagnose and address the issues with your Jeep's cruise control system.

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

When the cruise control in your 2021 Jeep Grand Cherokee ceases to function, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the primary culprits is a faulty brake light switch, which is crucial for the cruise control system as it disengages the system when the brake pedal is pressed. If this switch is malfunctioning, it may prevent the cruise control from engaging at all. Another potential issue is related to the speed sensor; if this component is not accurately relaying speed information, the cruise control may fail to maintain a constant speed. Additionally, a blown fuse in the cruise control circuit can completely disable the system, making it essential to check the fuses if you encounter issues. Problems with the throttle control system, particularly a faulty throttle position sensor, can also disrupt the cruise control's ability to function properly. Lastly, malfunctions in the Electronic Control Module (ECM), which oversees various vehicle functions including cruise control, can lead to operational failures. By identifying these common issues, you can take the first steps toward diagnosing and potentially resolving the cruise control problems in your Jeep.

How urgent is it to address the malfunctioning cruise control in a 2021 Jeep Grand Cherokee?

Addressing a malfunctioning cruise control system in a 2021 Jeep Grand Cherokee is of utmost importance due to the significant safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can result in dangerous driving conditions and increase the likelihood of accidents. Moreover, neglecting this issue may not only compromise your safety but could also lead to more extensive damage to the vehicle's systems, resulting in costly repairs down the line. Therefore, it is crucial to act promptly by having the cruise control inspected and repaired by a qualified mechanic or authorized service center. Taking swift action ensures the proper functioning of this essential system, safeguarding both your vehicle and your well-being on the road.

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