2018 Mercedes-Benz S63 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Mercedes-Benz S63 AMG and How to Fix Them

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Reviewed by
Devin Cabugcal
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 2018 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 2018 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.

What steps should I take to diagnose the non-functioning cruise control in my 2018 Mercedes-Benz S63 AMG?

To effectively diagnose the non-functioning cruise control in your 2018 Mercedes-Benz S63 AMG, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily rectifiable issue. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, as malfunctioning buttons can prevent engagement. Following this, verify the speed sensors, as faulty sensors can disrupt the cruise control system's functionality. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, inspect the brake and clutch switches, as these components must function correctly for the cruise control to operate. Lastly, examine the wiring and connections for any signs of damage or looseness, which could also contribute to the problem. If these steps do not resolve the issue, it may be necessary to consult a professional mechanic or an authorized Mercedes-Benz service center for further assistance. This methodical approach not only helps in identifying the root cause but also ensures that you cover all potential issues efficiently.

What are the common problems that could cause the cruise control to stop working in a 2018 Mercedes-Benz S63 AMG?

When dealing with cruise control issues in a 2018 Mercedes-Benz S63 AMG, it's crucial to understand the common problems that may be at play. One frequent culprit is a faulty speed sensor, which can disrupt the system's ability to accurately gauge the vehicle's speed, preventing the cruise control from engaging or maintaining speed. Additionally, the brake light switch can pose problems; if this switch malfunctions, it may not properly signal the cruise control system to disengage when the brake pedal is pressed, leading to unexpected behavior. 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 performance. Furthermore, a defective cruise control module can interrupt communication between various system components, resulting in a complete failure of the cruise control system. Lastly, electrical problems such as wiring issues or blown fuses can also contribute to cruise control malfunctions. For those looking to troubleshoot these issues themselves, it's advisable to start by checking the speed sensor and brake light switch, as these are often the most accessible components to inspect.

How urgent is it to address the malfunctioning cruise control in a 2018 Mercedes-Benz S63 AMG?

When it comes to a malfunctioning cruise control system in your 2018 Mercedes-Benz S63 AMG, the urgency of addressing the issue cannot be overstated. A faulty cruise control can compromise your driving experience, making it less convenient and potentially hazardous. Safety should always be a top priority; a malfunctioning system may lead to unexpected acceleration or deceleration, increasing the risk of accidents. Moreover, neglecting this issue could exacerbate the problem, resulting in more extensive damage to your vehicle's electronic systems, which can lead to costly repairs. By addressing the cruise control malfunction promptly, you not only ensure your safety but also help maintain the vehicle's performance and reliability, allowing you to enjoy the luxury and capabilities of your Mercedes-Benz to the fullest.

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2018 Mercedes-Benz S63 AMG Cruise Control Issues & Repairs