2020 Mercedes-Benz Sprinter 1500 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2020 Mercedes-Benz Sprinter 1500

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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 2020 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 2020 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.

What are the steps to diagnose the non-functioning cruise control in a 2020 Mercedes-Benz Sprinter 1500?

To effectively diagnose the non-functioning cruise control in a 2020 Mercedes-Benz Sprinter 1500, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, examine the cruise control buttons on the steering wheel to ensure they are responsive and not stuck, as this can also lead to functionality problems. If these initial checks do not reveal the issue, utilize a diagnostic scanner to identify any error codes from the vehicle's onboard computer, which can provide valuable insights into the malfunction. Following this, assess the speed sensors, as they are critical for the cruise control system's engagement; faulty sensors can prevent the system from activating. Additionally, inspect the wiring and connections associated with the cruise control for any signs of damage or corrosion, as these can disrupt the necessary signals. Finally, if all else fails, test the cruise control module itself to confirm it is operating correctly. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control malfunction.

What are the common problems that could cause the cruise control to stop working in a 2020 Mercedes-Benz Sprinter 1500?

When dealing with cruise control issues in a 2020 Mercedes-Benz Sprinter 1500, it's essential to understand the common problems that may arise. A faulty speed sensor is often at the forefront, as it plays a crucial role in relaying the vehicle's speed to the cruise control system. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Additionally, the brake light switch can be a culprit; if it has issues, it may incorrectly signal the cruise control to deactivate when the brakes are not applied. Another potential problem lies with the throttle actuator, which is responsible for controlling the engine's throttle opening. If this component is not functioning correctly, it can hinder the cruise control's ability to maintain speed. Furthermore, a defective cruise control module can lead to complete system failure, necessitating repair or replacement. Lastly, electrical problems, such as faulty wiring or blown fuses, can disrupt the cruise control's operation. For those looking to troubleshoot these issues, a thorough inspection of these components can help identify the root cause and guide necessary repairs.

How urgent is it to address the malfunctioning cruise control in a 2020 Mercedes-Benz Sprinter 1500?

Addressing a malfunctioning cruise control system in a 2020 Mercedes-Benz Sprinter 1500 is of utmost importance due to the immediate safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can create hazardous driving conditions and increase the likelihood of accidents. Promptly repairing the cruise control not only mitigates these risks but also helps prevent further damage to the vehicle's components, which could result in more extensive and costly repairs down the line. Additionally, a functioning cruise control system enhances the overall driving experience, providing convenience and comfort during long trips. Therefore, it is crucial to prioritize the repair of any cruise control issues to ensure both safety and optimal vehicle performance.

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2020 Mercedes-Benz Sprinter 1500 Cruise Control Fix & Costs