Ram ProMaster City Cruise Control Isn't Working

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

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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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Ram ProMaster City 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 Ram ProMaster City 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.

Troubleshooting Cruise Control Issues in a Ram ProMaster City

When troubleshooting cruise control issues in your Ram ProMaster City, it's essential to adopt a systematic diagnostic approach. Begin by checking the control module, as this is often the heart of the cruise control system. Look for any visible signs of damage or disconnection. Next, inspect the sensors that play a crucial role in the system's operation; ensure they are clean and securely connected. If the sensors appear to be functioning correctly, turn your attention to the throttle. A smooth-operating throttle is vital for cruise control, so check for any sticking or irregularities. Additionally, verify that the cruise control indicator lights are working; if they fail to illuminate when you engage the system, this could indicate an electrical issue. Finally, test the speed control lever to ensure it activates the cruise control properly. By following this methodical approach, you can effectively identify and address the root cause of your cruise control issues, making your DIY troubleshooting efforts more efficient and successful.

What Could Cause the Cruise Control to Malfunction in a Ram ProMaster City?

When dealing with cruise control malfunctions in a Ram ProMaster City, it's essential to understand the common problems that could be causing the issue. One of the primary culprits is a failed control module, which can disrupt the communication between various components of the cruise control system. Additionally, sensor or switch failures are frequent issues that can prevent the cruise control from engaging or functioning correctly. Throttle actuation problems also play a significant role; if the throttle position sensor is malfunctioning, it may lead to erratic engine behavior, such as excessive fuel consumption and black exhaust emissions. To effectively diagnose the problem, it's advisable to inspect the control module, sensors, and throttle components thoroughly. Utilizing a diagnostic scan tool can further aid in identifying specific faults within the speed control switch pod, body control module (BCM), powertrain control module (PCM), or other electronic controls associated with the cruise control system. By systematically checking these elements, you can pinpoint the root cause of the malfunction and take the necessary steps to resolve it.

Why is the Cruise Control Not Working in a Ram ProMaster City?

When the cruise control in your Ram ProMaster City fails, it’s crucial to address the issue promptly, as neglecting it can lead to safety risks and further complications. The cruise control system is designed to enhance driving comfort and safety, and any malfunction can compromise your control over the vehicle. Common culprits include problems with the control module, throttle position sensor, or various switches, which can lead to erratic engine behavior or even prevent the system from engaging altogether. Additionally, warning lights on your dashboard, such as ABS or engine lights, often indicate underlying issues that could disable the cruise control for safety reasons. Ignoring these signals not only diminishes your driving experience but could also result in more significant repairs down the line. Therefore, if you notice any symptoms of cruise control failure, such as unresponsive controls or warning lights, it’s essential to diagnose and resolve the problem as soon as possible to ensure your vehicle remains safe and reliable on the road.

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