Mercedes-Benz Sprinter 1500 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz Sprinter 1500 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
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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 Mercedes-Benz Sprinter 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 Mercedes-Benz Sprinter 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.

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 Mercedes-Benz Sprinter 1500

When troubleshooting cruise control issues in your Mercedes-Benz Sprinter 1500, start with the basics to identify the root cause efficiently. Begin by checking the functionality of the brake lights, as a malfunction here can disable the cruise control system. Next, inspect the relevant fuses to ensure they are intact and functioning properly. If these initial checks do not reveal the problem, examine the control module, sensors, and switches, as failures in these components are common culprits. Pay particular attention to the speed sensor, as issues here can directly affect cruise control performance. If your vehicle is a 2019 or 2020 model, verify whether it is subject to a recall regarding wheel sensors, which could also impact functionality. For older models, consider the condition of vacuum lines and throttle control systems, as these can lead to cruise control malfunctions. Lastly, if you suspect issues with the cruise control "stork lever" or any soldering problems, these should be addressed as well. By following this diagnostic approach, you can systematically narrow down the potential causes of cruise control issues and determine whether professional assistance is needed for more complex repairs.

Troubleshooting Cruise Control Issues in a Mercedes-Benz Sprinter 1500

When troubleshooting cruise control issues in a Mercedes-Benz Sprinter 1500, it's essential to be aware of several common problems that can disrupt the system's functionality. One frequent issue is a malfunctioning control module, which can prevent the cruise control from engaging properly. Additionally, sensors and throttle components may also fail, leading to erratic behavior or complete inoperability. Another area to inspect is the vacuum actuator and its associated hoses, as leaks or blockages can significantly impact performance. Transmission speed sensors and fuses are also critical; if they are faulty, the cruise control may not function as intended. For those retrofitting cruise control systems, utilizing a diagnostic tool can help pinpoint faults within the Tempomat system. Furthermore, understanding the correct operation of the cruise control, including the Distronic system, is vital for ensuring it works smoothly. If you experience intermittent operation or receive a warning message on the instrument cluster, it may indicate deeper electronic or mechanical issues that require further investigation. By familiarizing yourself with these common problems, you can take proactive steps to troubleshoot and resolve cruise control issues in your Sprinter 1500.

Why is the Cruise Control Not Working in a Mercedes-Benz Sprinter 1500?

When the cruise control in your Mercedes-Benz Sprinter 1500 fails, it’s crucial to address the issue promptly, as neglecting it can lead to safety risks and further vehicle damage. A defective brake pedal switch is often the primary culprit, as it can prevent the cruise control from engaging properly. Additionally, a blown fuse may disrupt the system's functionality, while problems with the throttle control or ABS can also hinder performance. For older models, a broken vacuum line could be the source of the malfunction. If you experience intermittent functionality, it may indicate deeper issues that require immediate attention. Furthermore, a faulty ABS wheel speed sensor can trigger warning lights and affect cruise control operation, necessitating a visit to a service center for a thorough diagnosis. Ignoring these symptoms not only compromises your driving safety but can also lead to more extensive repairs down the line, making it essential to investigate and resolve any cruise control issues as soon as they arise.

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