2019 Ram ProMaster 1500 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2019 Ram ProMaster 1500 and How to Fix Them

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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 2019 Ram ProMaster 1500 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 2019 Ram ProMaster 1500 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 steps should I take to diagnose the non-functioning cruise control in my 2019 Ram ProMaster 1500?

To effectively diagnose the non-functioning cruise control in your 2019 Ram ProMaster 1500, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse in the fuse box, as a blown fuse is a common and easily fixable issue that can halt cruise control functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, as faulty buttons can prevent engagement. Following this, verify the speed sensor, which is essential for cruise control operation; a malfunction here can lead to significant issues. Additionally, check the brake pedal switch, which is designed to disengage cruise control when the brakes are applied; if this switch is faulty, it may inadvertently disable the system. Utilizing a diagnostic scanner to check for error codes can provide insights into any underlying problems affecting the cruise control system. Finally, inspect the wiring and connections associated with the cruise control for any signs of damage or loose connections, as these can disrupt functionality. By following this structured diagnostic approach, you can efficiently identify and address the root cause of your cruise control issues.

What are the common problems that could cause the cruise control to stop working in a 2019 Ram ProMaster 1500?

When the cruise control in your 2019 Ram ProMaster 1500 stops functioning, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the first things to check is the cruise control switch; if it's faulty, it may not engage or disengage as intended. Additionally, inspect the vehicle's fuses, as a blown fuse can disrupt the electrical system and prevent cruise control from operating. The speed sensor is another critical component; if it malfunctions, the system may struggle to maintain a constant speed. Furthermore, issues with the brake light switch can cause the cruise control to disengage unexpectedly, so ensure that this switch is functioning correctly. Lastly, the throttle actuator plays a vital role in controlling the throttle opening, and any failure here can directly impact cruise control performance. By systematically examining these components, you can identify and resolve the underlying issues affecting your cruise control system.

How urgent is it to address the non-functioning cruise control in a 2019 Ram ProMaster 1500?

When it comes to a non-functioning cruise control in your 2019 Ram ProMaster 1500, addressing the issue promptly is essential for maintaining both safety and vehicle performance. While it may not seem like an immediate emergency, neglecting this problem can lead to increased driver fatigue during long trips, as the convenience of maintaining a constant speed is lost. Additionally, a malfunctioning cruise control system may indicate deeper electronic issues within the vehicle, which could escalate if left unchecked. By taking the time to investigate and potentially repair the cruise control system, you not only enhance your driving experience but also prevent the risk of more significant problems that could affect the overall reliability of your vehicle. Therefore, it is advisable to consult a qualified mechanic or explore DIY solutions to ensure that your cruise control is functioning properly, ultimately contributing to a safer and more efficient driving experience.

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