2009 Mercedes-Benz S63 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2009 Mercedes-Benz S63 AMG and How to Fix Them

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Reviewed by
Aisha
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 2009 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 2009 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 are the steps to diagnose the cruise control issue in a 2009 Mercedes-Benz S63 AMG?

To effectively diagnose a cruise control issue in a 2009 Mercedes-Benz S63 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 resolve the issue, utilize a diagnostic scanner to identify any error codes from the vehicle's onboard computer, which can provide insights into specific malfunctions. Following this, verify the speed sensors, as they are essential for the cruise control system's operation; any faults here can significantly impact performance. Additionally, test the brake pedal switch, since a malfunction can prevent the cruise control from engaging altogether. 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 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 2009 Mercedes-Benz S63 AMG?

When dealing with cruise control issues in a 2009 Mercedes-Benz S63 AMG, it's essential to understand the common problems that may arise. One of the primary culprits is a defective component or sensor within the cruise control system, which can prevent it from functioning correctly. Additionally, malfunctions can occur that cause the cruise control to fail to set or to drop out unexpectedly while driving, leading to a frustrating experience. Another area to investigate is the vehicle's fuse and brake lights, as problems in these components can significantly impact the cruise control's operation. For those looking to tackle this issue themselves, it's crucial to methodically check these components and consider consulting a service manual for detailed guidance. However, if the problem persists, seeking assistance from a qualified service team is advisable to ensure a thorough diagnosis and repair.

How urgent is it to address the non-functioning cruise control in a 2009 Mercedes-Benz S63 AMG?

When it comes to the non-functioning cruise control in a 2009 Mercedes-Benz S63 AMG, understanding the urgency of the situation is crucial for any DIY enthusiast. While the immediate safety risks may not be apparent, neglecting this issue can lead to a cascade of complications that affect both the vehicle's performance and your driving experience. A malfunctioning cruise control system can diminish the convenience of long drives, increasing driver fatigue and potentially leading to distractions that could compromise safety. Moreover, if left unaddressed, the underlying electrical issues that may be causing the cruise control failure could escalate, resulting in more significant and costly repairs down the line. Therefore, while it may not seem like an emergency, it is wise to investigate the problem sooner rather than later. Taking proactive steps to diagnose and repair the cruise control system not only enhances your driving comfort but also helps maintain the overall integrity of your vehicle, ensuring that you can enjoy the full benefits of this essential feature.

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2009 Mercedes-Benz S63 AMG Cruise Control Issues & Fixes