2015 Mercedes-Benz S63 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2015 Mercedes-Benz S63 AMG and How to Fix Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2015 Mercedes-Benz S63 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 2015 Mercedes-Benz S63 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 non-functioning cruise control in my 2015 Mercedes-Benz S63 AMG?

When diagnosing the non-functioning cruise control in your 2015 Mercedes-Benz S63 AMG, it's crucial to take a methodical approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by examining the cruise control fuse, as a blown fuse is a frequent culprit that can easily be replaced. Next, assess the cruise control buttons on the steering wheel to ensure they are operational, since unresponsive buttons can lead to functionality issues. Utilizing a diagnostic scanner to retrieve error codes from the vehicle's computer can reveal hidden problems that may not be immediately apparent. Additionally, check the speed sensors, which are vital for the cruise control system to function correctly. It's also essential to inspect the brake and clutch switches, as any malfunction in these components can disable the cruise control for safety reasons. Lastly, take a close look at the wiring and connections related to the cruise control system for any signs of wear, damage, or corrosion, as these can disrupt the necessary signals. By following this structured diagnostic process, you can effectively pinpoint and resolve the underlying issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2015 Mercedes-Benz S63 AMG?

When the cruise control in a 2015 Mercedes-Benz S63 AMG ceases to function, several common issues may be at play. One of the primary culprits is a faulty speed sensor, which is crucial for the system to accurately gauge the vehicle's speed. If this sensor malfunctions, the cruise control may fail to engage or maintain the desired speed. Another frequent issue arises from the brake light switch; if this switch is defective, it can disrupt the cruise control's operation since the system is designed to disengage when the brake pedal is pressed. Additionally, a malfunctioning throttle actuator can hinder the cruise control's ability to maintain a constant speed, as it directly controls the engine's throttle opening. A defective cruise control module is also a potential problem, as it processes speed data and manages the engagement and disengagement of the system. Lastly, electrical issues such as wiring faults or blown fuses can lead to cruise control malfunctions. By systematically checking these components, DIYers can effectively diagnose and address the issues affecting the cruise control system in their vehicle.

How urgent is it to address the non-functioning cruise control in a 2015 Mercedes-Benz S63 AMG?

When it comes to the non-functioning cruise control in a 2015 Mercedes-Benz S63 AMG, understanding the urgency of the situation is crucial for any DIY enthusiast. While this issue may not present an immediate safety hazard, it can significantly affect your driving comfort, especially during long trips or highway driving where maintaining a consistent speed is beneficial. Ignoring the malfunction could lead to further complications, such as increased wear on the vehicle's engine or transmission, which may result in more extensive and costly repairs down the line. Additionally, a fully operational cruise control system contributes to the overall performance and efficiency of your vehicle, making it essential to address any malfunctions promptly. By taking the time to diagnose and repair the cruise control system, you not only enhance your driving experience but also safeguard against potential future issues, ensuring that your luxury vehicle remains in optimal condition.

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