2021 Ram 1500 Classic Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2021 Ram 1500 Classic

Find Repair Location
Reviewed by
Andrew Hajjar
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 Ram 1500 Classic 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 Ram 1500 Classic 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.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2021 Ram 1500 Classic?

When troubleshooting a non-functioning cruise control in a 2021 Ram 1500 Classic, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, verify the functionality of the cruise control switch; a malfunctioning switch can prevent engagement, so ensure it is working correctly. Following this, examine the speed sensors, as they play a crucial role in the cruise control system's performance; any faults here can disrupt functionality. Additionally, inspect the wiring connections associated with the cruise control system for any signs of damage or loose connections, as these can lead to operational failures. If these initial checks do not resolve the issue, use a diagnostic scanner to scan for error codes that may indicate specific problems within the system. Finally, if all else fails, test the cruise control module itself, as a malfunctioning module can be the root cause of the problem. By following this structured approach, you can effectively identify and address the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2021 Ram 1500 Classic?

When troubleshooting cruise control issues in a 2021 Ram 1500 Classic, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to disengage when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the cruise control's functionality, as it relies on accurate speed readings to maintain the desired speed. A blown fuse in the vehicle's electrical system can also be a simple yet overlooked reason for cruise control failure. Furthermore, a malfunction in the throttle control system, such as a faulty throttle position sensor, can hinder the cruise control's ability to sustain a consistent speed. Lastly, vacuum leaks in the engine can significantly impact the cruise control system, as it operates based on vacuum pressure. By systematically checking these components, you can effectively diagnose and resolve the cruise control problems in your Ram 1500 Classic.

How urgent is it to address the non-functioning cruise control in a 2021 Ram 1500 Classic?

When it comes to the non-functioning cruise control in a 2021 Ram 1500 Classic, understanding the urgency of the situation is crucial for any DIY enthusiast. While the immediate safety of the vehicle may not be compromised, neglecting this issue can lead to a less enjoyable driving experience, particularly on long trips where cruise control is invaluable for reducing fatigue and improving fuel efficiency. Furthermore, a malfunctioning cruise control system could indicate underlying problems within the vehicle's electronic systems, which, if left unaddressed, might escalate into more significant issues that could affect drivability and safety. Therefore, it is advisable to investigate the cause of the malfunction sooner rather than later. By doing so, you not only enhance your driving comfort but also prevent potential complications that could arise from ignoring the problem. Taking the initiative to troubleshoot or consult a qualified mechanic can ensure that your vehicle remains in optimal condition, allowing you to enjoy the full benefits of your Ram 1500 Classic.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.