2020 Ram 2500 Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2020 Ram 2500

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Reviewed by
Aisha
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 2020 Ram 2500 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 2020 Ram 2500 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.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

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 steps should I take to diagnose the cruise control issue in my 2020 Ram 2500?

To effectively diagnose the cruise control issue in your 2020 Ram 2500, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse in the fuse box, as a blown fuse is a common and easily fixable problem that can disrupt the system's functionality. Next, examine the cruise control buttons on your steering wheel to ensure they are operational, as faulty buttons can prevent engagement. Following this, verify the speed sensors, which play a crucial role in the cruise control system; any malfunction here can lead to significant issues. Utilizing an OBD-II scanner to check for error codes can provide insights into any underlying problems that may not be immediately visible. If your vehicle uses a vacuum system for cruise control, inspect the vacuum lines for leaks or damage, as these can severely impact performance. Additionally, ensure that the brake and clutch switches are functioning correctly, as faulty switches can inadvertently disengage the cruise control. If these steps do not resolve the issue, it may be time to consult a professional mechanic for a more thorough diagnosis. By following this structured approach, you can efficiently identify and address the cruise control problem in your Ram 2500.

What are the common problems that could cause the cruise control to stop working in a 2020 Ram 2500?

When troubleshooting cruise control issues in a 2020 Ram 2500, it's essential to understand the common problems that may lead to its malfunction. One frequent culprit is faulty speed sensors, which can disrupt the system's ability to accurately gauge the vehicle's speed, preventing the cruise control from engaging or maintaining speed. Additionally, a defective cruise control switch can impede the driver's ability to activate the system, while a blown fuse may interrupt the electrical circuit necessary for its operation. Vacuum leaks in the engine can also affect the vacuum-operated cruise control, causing it to disengage unexpectedly. Furthermore, issues with the brake light switch can prevent the cruise control from engaging as a safety precaution when brakes are applied. Lastly, any malfunction in the throttle control mechanism can hinder the cruise control's capacity to regulate speed effectively. By identifying and addressing these issues, you can restore the functionality of your cruise control system and enhance your driving experience.

How urgent is it to address the malfunctioning cruise control in a 2020 Ram 2500?

When it comes to a malfunctioning cruise control in a 2020 Ram 2500, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk to both the driver and others on the road. Moreover, the inconvenience of a malfunctioning cruise control can detract from the overall driving experience, especially during long trips where consistent speed is crucial for comfort and fuel efficiency. Ignoring these symptoms may not only compromise safety but can also lead to increased fuel consumption due to erratic speed control. Additionally, delaying repairs can exacerbate the problem, potentially resulting in more extensive damage to the vehicle's systems, which could lead to higher repair costs down the line. Therefore, it is essential to prioritize the diagnosis and repair of cruise control issues promptly, ensuring a safer and more efficient driving experience.

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2020 Ram 2500 Cruise Control Issues & Repair Costs