2020 Mercedes-Benz Sprinter 3500XD Cruise Control Isn't Working

Fixing Cruise Control Issues in 2020 Mercedes-Benz Sprinter 3500XD

Find Repair Location
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 2020 Mercedes-Benz Sprinter 3500XD 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.

What are the initial diagnostic steps to take when the cruise control isn't working on a 2020 Mercedes-Benz Sprinter 3500XD?

When faced with a malfunctioning cruise control system in your 2020 Mercedes-Benz Sprinter 3500XD, it's important to approach the diagnosis methodically. Begin by checking the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, inspect the cruise control buttons on the steering wheel; if they are unresponsive, they may need replacement. It's also crucial to verify that the vehicle's speed sensors are operational, as these sensors provide the necessary data for the cruise control to function correctly. Additionally, examine the brake pedal switch, since the cruise control is designed to disengage when the brake is applied; a faulty switch could be the culprit. Finally, using a diagnostic scanner to check for error codes can reveal underlying issues that may not be immediately apparent. By following these steps, you can effectively troubleshoot and potentially resolve the cruise control problem on your Sprinter, saving time and money in the process.

What are the common problems that could cause the cruise control to stop working in a 2020 Mercedes-Benz Sprinter 3500XD?

When troubleshooting cruise control issues in a 2020 Mercedes-Benz Sprinter 3500XD, it's essential to consider several common problems that may be at play. A faulty speed sensor is often the culprit, as it plays a critical role in relaying the vehicle's speed to the cruise control system; if it malfunctions, the system may fail to engage or maintain speed. Additionally, the brake light switch can cause disruptions; since the cruise control is designed to deactivate when the brakes are applied, any issues here can lead to unexpected behavior. Another area to inspect is the throttle actuator, which is responsible for adjusting the throttle position; if it’s not functioning correctly, the cruise control may struggle to maintain the desired speed. Furthermore, a defective cruise control module can prevent the system from responding to user commands, while electrical problems such as wiring issues or blown fuses can disrupt communication between the various components. By systematically checking these areas, DIYers can identify and potentially resolve the issues affecting their cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2020 Mercedes-Benz Sprinter 3500XD?

When it comes to a malfunctioning cruise control in a 2020 Mercedes-Benz Sprinter 3500XD, the urgency to address the issue cannot be overstated. A faulty cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses significant safety risks on the road. Moreover, these malfunctions may be indicative of deeper electronic system or sensor problems that could compromise the overall drivability of your vehicle. Ignoring these symptoms not only jeopardizes your safety but can also lead to decreased fuel efficiency and increased wear on critical components, ultimately resulting in more costly repairs down the line. Therefore, if you notice any irregularities with your cruise control, it is crucial to diagnose and resolve the issue promptly, either through DIY troubleshooting or by consulting a qualified technician, to maintain the safety and performance of your Sprinter.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

2020 Mercedes-Benz Sprinter 3500XD Cruise Control Fix