2020 Mercedes-Benz Metris Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 Mercedes-Benz Metris 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
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2020 Mercedes-Benz Metris 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 Metris 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.

What steps should I take to diagnose the non-functioning cruise control in my 2020 Mercedes-Benz Metris?

To effectively diagnose the non-functioning cruise control in your 2020 Mercedes-Benz Metris, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, as malfunctioning buttons can disrupt the system's functionality. Following this, verify the speed sensors, since faulty sensors can prevent the cruise control from engaging properly. It's also essential to check the brake pedal switch, as a malfunction here can disable the cruise control entirely. If these initial checks do not reveal the problem, utilize a diagnostic scanner to identify any error codes that may indicate specific issues within the cruise control system. Should you still be unable to determine the cause, consulting a professional mechanic or an authorized Mercedes-Benz service center is advisable for a comprehensive diagnosis and repair. By following this structured approach, you can efficiently troubleshoot and potentially resolve the cruise control issue in your vehicle.

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

When troubleshooting cruise control issues in a 2020 Mercedes-Benz Metris, it's essential to consider several common problems that may be at play. A faulty cruise control switch is often the first suspect, as it can hinder the system's ability to engage or disengage properly. Additionally, a malfunctioning speed sensor can disrupt the system's capacity to maintain a consistent speed, leading to erratic behavior. Another critical component is the brake light switch; if this switch fails, it may cause the cruise control to disengage unexpectedly, even when the brakes are not applied. Furthermore, issues with the throttle actuator can prevent the cruise control from adjusting the vehicle's speed accurately, which is vital for smooth operation. Lastly, electrical issues, such as wiring problems or faults within the cruise control system, can also lead to functionality loss. By understanding these potential failure modes, DIYers can better diagnose and address the underlying issues affecting their vehicle's cruise control system.

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

Addressing a malfunctioning cruise control in a 2020 Mercedes-Benz Metris is of utmost urgency due to the significant safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can create dangerous driving conditions for both the driver and others on the road. Additionally, neglecting this issue can diminish the overall driving experience, as the convenience of cruise control is compromised. Beyond immediate safety concerns, ignoring these symptoms may result in further wear and tear on the vehicle's components, leading to more extensive and costly repairs down the line. Therefore, it is crucial to diagnose and repair cruise control malfunctions promptly to maintain the vehicle's efficiency and safety, ensuring that it operates at its best for the long term.

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2020 Mercedes-Benz Metris Cruise Control Issues & Solutions