2017 Mercedes-Benz CLS63 AMG S Cruise Control Isn't Working

Fixing Cruise Control Issues in 2017 Mercedes-Benz CLS63 AMG S

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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 2017 Mercedes-Benz CLS63 AMG S 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 CLS63 AMG S 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.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

What steps should I take to diagnose the cruise control issue in my 2017 Mercedes-Benz CLS63 AMG S?

To effectively diagnose the cruise control issue in your 2017 Mercedes-Benz CLS63 AMG S, 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 for any signs of damage or wear that could hinder their operation. Utilizing an OBD-II scanner to scan for error codes is a crucial step, as these codes can pinpoint specific problems within the cruise control system. Following this, verify the functionality of the vehicle's speed sensors, which are essential for the cruise control to operate correctly. Additionally, examine the wiring connections associated with the cruise control system for any loose or damaged wires that may be causing the issue. If these preliminary checks do not resolve the problem, testing the cruise control module is advisable, as a malfunctioning module can lead to persistent issues. Should you find yourself unable to diagnose the problem after these steps, seeking assistance from a professional mechanic or an authorized Mercedes-Benz service center is recommended to ensure a thorough and accurate resolution.

What are the common problems that could cause the cruise control to stop working in a 2017 Mercedes-Benz CLS63 AMG S?

When troubleshooting the cruise control system in a 2017 Mercedes-Benz CLS63 AMG S, it's essential to understand the common problems that may lead to its failure. One of the primary culprits is a faulty speed sensor, which can disrupt the system's ability to accurately gauge the vehicle's speed, preventing it from engaging or maintaining the desired speed. Additionally, issues with the brake light switch can pose significant problems; since the cruise control is designed to disengage when the brake pedal is pressed, a malfunctioning switch may fail to signal this action, causing the system to stop working unexpectedly. Another potential issue is a malfunctioning throttle actuator, which is responsible for controlling the engine's throttle opening and can hinder the cruise control's ability to maintain a constant speed. Furthermore, a defective cruise control module can also be a significant factor, as it may not effectively communicate with other vehicle systems necessary for speed regulation. Lastly, electrical problems such as wiring issues or blown fuses can lead to system malfunctions, making it crucial to inspect all electrical components for faults. By identifying and addressing these common issues, you can effectively diagnose and restore the cruise control functionality in your vehicle.

How urgent is it to address the non-functioning cruise control in a 2017 Mercedes-Benz CLS63 AMG S?

When it comes to the non-functioning cruise control in a 2017 Mercedes-Benz CLS63 AMG S, understanding the urgency of the situation is crucial for any DIY enthusiast. While the absence of this feature may not pose an immediate safety risk, it can significantly detract from the overall driving experience, especially during long trips where maintaining a consistent speed is essential for comfort and fatigue reduction. Ignoring the problem could lead to increased frustration during highway driving, where cruise control is most beneficial. Moreover, what may initially seem like a minor inconvenience could potentially escalate into more serious electronic issues if left unaddressed. Therefore, it is advisable to tackle the non-functioning cruise control promptly, ensuring not only the convenience of the feature but also the long-term health of your vehicle's systems. Taking action now can prevent further complications down the road, making it a wise choice for any conscientious driver.

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