2017 Mercedes-Benz S600 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2017 Mercedes-Benz S600

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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 S600 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 S600 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 2017 Mercedes-Benz S600?

To effectively diagnose the non-functioning cruise control in your 2017 Mercedes-Benz S600, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse in the fuse box, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, examine the cruise control buttons on the steering wheel to ensure they are responsive and not malfunctioning, as faulty buttons can prevent engagement. Following this, verify the functionality of the speed sensors, since any malfunction here can directly impact the cruise control's performance. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific issues within the cruise control system. Additionally, assess the brake and clutch switches, as these components are crucial for the safe operation of cruise control and can disable the system if they are faulty. Finally, inspect the wiring and connections for any signs of damage or corrosion, as poor connections can disrupt communication with the cruise control module. If these steps do not resolve the issue, consulting a professional mechanic or an authorized Mercedes-Benz service center is advisable for a comprehensive diagnosis and repair. By following this structured approach, you can efficiently identify the root cause of the cruise control malfunction.

What are the common problems that could cause the cruise control to stop working in a 2017 Mercedes-Benz S600?

When the cruise control in a 2017 Mercedes-Benz S600 ceases to function, several common problems 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 speed. Additionally, issues with the brake light switch can disrupt the system, as it is designed to disengage when the brake pedal is pressed. A malfunctioning switch may prevent this disengagement, leading to cruise control failure. Another potential issue is a malfunctioning throttle actuator, which controls the engine's throttle opening and is essential for maintaining a constant speed. Electrical problems, such as blown fuses or wiring issues, can also hinder the cruise control's operation, as can vacuum leaks in the engine that disrupt the necessary vacuum supply for the system. By understanding these common problems, DIY enthusiasts can better diagnose and address the issues affecting their cruise control system, potentially restoring its functionality without the need for professional assistance.

How urgent is it to address the malfunctioning cruise control in a 2017 Mercedes-Benz S600?

When it comes to the malfunctioning cruise control in a 2017 Mercedes-Benz S600, the urgency of addressing the issue cannot be overstated. A malfunctioning system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk not only to the driver but also to other road users. Additionally, the inconvenience of a faulty cruise control can detract from the overall driving experience, making long journeys more stressful and uncomfortable. Moreover, neglecting this issue may result in further complications within the vehicle's electronic systems, potentially leading to more extensive and costly repairs down the line. Therefore, it is crucial to prioritize the diagnosis and repair of the cruise control system to ensure safe and enjoyable driving while preserving the integrity of your vehicle.

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