2017 Mercedes-Benz Sprinter 3500 Cruise Control Isn't Working

Fixing Cruise Control Issues in 2017 Mercedes-Benz Sprinter 3500

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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 2017 Mercedes-Benz Sprinter 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 Mercedes-Benz Sprinter 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.

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.

What are the initial diagnostic steps to take when the cruise control isn't working on a 2017 Mercedes-Benz Sprinter 3500?

When faced with a malfunctioning cruise control system in a 2017 Mercedes-Benz Sprinter 3500, it's essential to adopt a methodical diagnostic approach. Begin by checking the cruise control fuse, as a blown fuse is a straightforward issue that can easily disrupt functionality. Next, inspect the cruise control buttons on the steering wheel; ensuring they are operational is crucial since faulty buttons can prevent engagement. Following this, verify the speed sensors, as they play a vital role in maintaining the set speed; any malfunction here can lead to cruise control failure. Additionally, examine the brake pedal switch, which is designed to disengage the system when pressed; a faulty switch can cause unexpected deactivation. Utilizing a diagnostic scanner to check for error codes can provide further insights into any underlying issues. Lastly, inspect the wiring and connections associated with the cruise control system for signs of damage or corrosion, as poor connections can lead to malfunctions. By systematically addressing these areas, you can effectively diagnose and potentially resolve the cruise control issue on your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2017 Mercedes-Benz Sprinter 3500?

When the cruise control in your 2017 Mercedes-Benz Sprinter 3500 stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty speed sensor, which is crucial for the cruise control system to accurately gauge the vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Another frequent issue is related to the brake light switch; if this switch is defective, it can cause the cruise control to disengage unexpectedly whenever the brake pedal is pressed. Additionally, a malfunctioning throttle actuator can disrupt communication between the cruise control system and the engine, leading to operational failures. It's also important to consider the cruise control module itself, as a defect here can prevent the system from receiving the necessary signals to function properly. Lastly, electrical problems such as wiring issues or blown fuses can significantly interfere with the cruise control's performance. By identifying these common problems, you can take the first steps toward troubleshooting and potentially fixing the cruise control system in your Sprinter 3500.

How urgent is it to address the malfunctioning cruise control in a 2017 Mercedes-Benz Sprinter 3500?

Addressing a malfunctioning cruise control system in a 2017 Mercedes-Benz Sprinter 3500 is of utmost urgency due to the significant safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, creating hazardous driving conditions that could result in accidents. Moreover, issues with the cruise control may signal deeper problems within the vehicle's electronic systems or sensors, which can compromise overall performance and drivability. Ignoring these symptoms not only risks safety but can also lead to decreased fuel efficiency and increased wear on vehicle components, ultimately resulting in more costly repairs. By promptly addressing the cruise control malfunction, you can prevent further damage to the system and ensure the vehicle operates safely and efficiently, safeguarding both the driver and passengers.

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