2016 Mercedes-Benz SL65 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2016 Mercedes-Benz SL65 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 2016 Mercedes-Benz SL65 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 2016 Mercedes-Benz SL65 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.

What steps should I take to diagnose the non-functioning cruise control in my 2016 Mercedes-Benz SL65 AMG?

When diagnosing the non-functioning cruise control in your 2016 Mercedes-Benz SL65 AMG, it's crucial to take a methodical approach that prioritizes simpler checks before delving into more complex issues. Begin by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a frequent culprit that can easily disrupt the system. Next, ensure that the cruise control buttons on the steering wheel are working properly, since malfunctioning buttons can prevent the system from engaging. After that, verify the speed sensors, as any faults here can significantly impact cruise control performance. Utilizing a diagnostic scanner to check for error codes can also be beneficial, as it may reveal specific issues within the system. Additionally, check the brake and clutch switches, which are essential for the cruise control to function correctly. Lastly, examine the wiring and connections related to the cruise control system for any damage or loose connections that could be causing the malfunction. By following this structured approach, you can effectively diagnose and resolve the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2016 Mercedes-Benz SL65 AMG?

When troubleshooting cruise control issues in a 2016 Mercedes-Benz SL65 AMG, it's essential to consider several common problems that could be at play. A faulty speed sensor is often a primary culprit, as it plays a crucial role in relaying the vehicle's speed to the cruise control system. If this sensor malfunctions, the system may struggle to maintain the desired speed. Additionally, the brake light switch is another critical component; if it fails, it can inadvertently signal the cruise control to disengage whenever the brakes are applied, disrupting the system's operation. Another potential issue lies with the throttle actuator, which is responsible for adjusting the throttle position. If it encounters problems, the cruise control may not respond correctly to speed adjustments. Furthermore, vacuum leaks within the engine can significantly impact the cruise control's functionality, as these leaks can disrupt the necessary vacuum supply. Lastly, electrical problems, including blown fuses or wiring issues, can prevent the cruise control module from functioning properly. By systematically checking these components, DIY enthusiasts can effectively diagnose and resolve cruise control malfunctions in their SL65 AMG.

How urgent is it to address the malfunctioning cruise control in a 2016 Mercedes-Benz SL65 AMG?

When it comes to the malfunctioning cruise control in a 2016 Mercedes-Benz SL65 AMG, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can lead to unpredictable speed fluctuations, posing significant safety risks, especially during highway driving where maintaining a constant speed is crucial. Ignoring these symptoms may not only compromise your safety but could also result in more severe mechanical issues down the line, leading to costly repairs. Furthermore, a well-functioning cruise control system is essential for the overall performance and reliability of your vehicle, ensuring a smooth and enjoyable driving experience. Therefore, it is imperative to have the malfunction diagnosed and repaired by a qualified mechanic as soon as possible to mitigate any potential risks and maintain the integrity of your vehicle.

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