2020 Mercedes-Benz CLS53 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in 2020 Mercedes-Benz CLS53 AMG

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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 CLS53 AMG 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 CLS53 AMG 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 steps should I take to diagnose the cruise control issue in my 2020 Mercedes-Benz CLS53 AMG?

To effectively diagnose the cruise control issue in your 2020 Mercedes-Benz CLS53 AMG, begin with the simplest solutions before progressing to more complex diagnostics. Start by checking the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to engagement problems. If these initial checks do not reveal the issue, utilize an OBD-II scanner to identify any error codes that may indicate specific malfunctions within the system. Following this, examine the speed sensors, as they are essential for the cruise control's performance; any faults here can significantly impact its operation. Additionally, test the brake pedal switch, since a malfunctioning switch can prevent the cruise control from engaging. Finally, conduct a thorough inspection of the wiring and connections associated with the cruise control system, looking for signs of damage or corrosion that could hinder functionality. By systematically addressing these areas, you can effectively diagnose and resolve the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to malfunction in a 2020 Mercedes-Benz CLS53 AMG?

When dealing with cruise control malfunctions in a 2020 Mercedes-Benz CLS53 AMG, it's essential to understand the various common problems that may arise. One of the primary culprits is sensor issues, where the sensors responsible for monitoring speed and distance may fail, leading to inaccurate readings and erratic behavior of the cruise control system. Additionally, electrical faults, such as damaged wiring or loose connectors, can disrupt the system's functionality, preventing it from engaging or maintaining the desired speed. Software glitches are another concern, as the electronic nature of the cruise control can lead to unexpected performance issues that may require a software reset or update. Mechanical problems, including a faulty cruise control module or actuator, can also hinder the system's operation, making it crucial to inspect these components regularly. Furthermore, a malfunctioning brake light switch can interfere with the cruise control's ability to engage, as the system is designed to deactivate when the brake pedal is pressed. Lastly, throttle control malfunctions, particularly with the throttle position sensor or actuator, can impact the system's ability to maintain a consistent speed. By being aware of these potential issues, DIY enthusiasts can take proactive steps to diagnose and address cruise control problems, ensuring a safer and more reliable driving experience.

How urgent is it to address the malfunctioning cruise control in a 2020 Mercedes-Benz CLS53 AMG?

When it comes to a malfunctioning cruise control system in a 2020 Mercedes-Benz CLS53 AMG, the urgency of addressing the issue cannot be overstated. A malfunctioning cruise control can significantly disrupt your driving experience, making it inconvenient and potentially hazardous, especially during long drives on highways. The unpredictability of unexpected acceleration or deceleration poses serious safety risks, not only to the driver but also to other road users. Moreover, neglecting these symptoms can lead to more severe complications, including damage to the vehicle's electronic systems, which may result in costly repairs down the line. Therefore, it is crucial to prioritize the diagnosis and repair of cruise control issues promptly, ensuring both your safety and the optimal performance of your vehicle. Taking swift action can prevent accidents and maintain the integrity of your Mercedes-Benz, allowing you to enjoy a smooth and safe driving experience.

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2020 Mercedes-Benz CLS53 AMG Cruise Control Issues & Repairs