2017 Ram ProMaster 3500 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2017 Ram ProMaster 3500 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2017 Ram ProMaster 3500 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 2017 Ram ProMaster 3500 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.

What are the steps to diagnose the cruise control issue in a 2017 Ram ProMaster 3500?

To effectively diagnose a cruise control issue in a 2017 Ram ProMaster 3500, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, which could prevent proper operation. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying electronic issues. Additionally, inspect the speed sensors, as they play a crucial role in the cruise control system's performance. It's also important to test the brake pedal switch, since a malfunctioning switch can inhibit cruise control activation. Finally, take a close look at the wiring and connections associated with the cruise control system for any signs of damage or corrosion. If these steps do not resolve the issue, seeking assistance from a professional mechanic with experience in Ram ProMaster vehicles is recommended to ensure a thorough diagnosis and repair.

What are the common problems that could cause the cruise control to stop working in a 2017 Ram ProMaster 3500?

When troubleshooting cruise control issues in a 2017 Ram ProMaster 3500, it's essential to consider several common problems that could be at play. One of the primary culprits 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 cruise control system can also lead to a complete failure, necessitating a simple fuse replacement to restore operation. Furthermore, if the cruise control module itself is malfunctioning, it may require repair or replacement to get the system back on track. Lastly, problems with the throttle control system, such as a faulty throttle position sensor, can hinder the cruise control's ability to maintain speed effectively. By addressing these potential issues, you can effectively diagnose and resolve the cruise control problems in your vehicle.

How urgent is it to address the non-functioning cruise control in a 2017 Ram ProMaster 3500?

Addressing a non-functioning cruise control in a 2017 Ram ProMaster 3500 is important, even if it may not seem like an immediate emergency. While the absence of this feature does not pose a direct safety risk, it can significantly affect your driving comfort and convenience, especially during long trips. A malfunctioning cruise control system can lead to driver fatigue as maintaining a constant speed becomes a manual task, which can be particularly taxing on highways. Moreover, ignoring the issue could lead to further complications, such as more extensive repairs down the line or even the potential for other related systems to fail. For those who frequently rely on cruise control, the inconvenience of its absence can quickly become frustrating. Therefore, it is advisable to diagnose and repair the underlying issue promptly, ensuring a smoother and more enjoyable driving experience. Taking the time to address this problem not only enhances your vehicle's functionality but also contributes to safer driving conditions overall.

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