2023 Mercedes-Benz S500 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2023 Mercedes-Benz S500

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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 2023 Mercedes-Benz S500 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 2023 Mercedes-Benz S500 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 initial steps to diagnose the cruise control issue in a 2023 Mercedes-Benz S500?

To effectively diagnose a cruise control issue in your 2023 Mercedes-Benz S500, begin with the simplest checks to rule out common problems. Start by inspecting the cruise control fuse; a blown fuse can easily disrupt the system's functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, as faulty buttons can prevent the system from engaging. If these initial checks do not reveal the issue, utilize a diagnostic scanner to identify any error codes from the vehicle's onboard computer, which can provide insights into specific malfunctions. Additionally, verify the functionality of the speed sensors, as they are essential for the cruise control system to operate correctly. Finally, inspect the wiring connections associated with the cruise control system for any signs of damage or corrosion, as compromised wiring can lead to system failures. By following this structured approach, you can efficiently diagnose and address cruise control issues in your vehicle.

What are the common problems that could cause the cruise control to malfunction in a 2023 Mercedes-Benz S500?

When experiencing cruise control malfunctions in a 2023 Mercedes-Benz S500, it's crucial to understand the potential issues that could be at play. One of the most frequent culprits is sensor problems, where the sensors responsible for monitoring vehicle speed and distance may fail, leading to erratic cruise control behavior. Additionally, electrical faults, such as blown fuses or damaged wiring, can disrupt the system's functionality, making it essential to inspect the vehicle's electrical components. Another common issue is a faulty brake light switch, which can prevent the cruise control from engaging or disengaging as intended. Furthermore, if the throttle control system is malfunctioning, it can hinder the cruise control's ability to maintain a steady speed. Lastly, software glitches within the vehicle's onboard computer can also contribute to these malfunctions. By identifying and addressing these common problems, DIY enthusiasts can effectively troubleshoot and restore the cruise control system to optimal performance.

How urgent is it to address the malfunctioning cruise control in a 2023 Mercedes-Benz S500?

Addressing a malfunctioning cruise control in a 2023 Mercedes-Benz S500 is of utmost importance due to the immediate safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can result in dangerous driving situations. Promptly fixing this issue not only safeguards your safety but also helps prevent potential accidents that could arise from erratic vehicle behavior. Additionally, neglecting the repair can lead to further complications within the vehicle's systems, resulting in more extensive and costly repairs down the line. Beyond safety and financial implications, a malfunctioning cruise control detracts from the overall driving experience, diminishing the convenience and comfort that this feature is designed to provide. Therefore, it is crucial to prioritize the repair of your cruise control system to ensure both your safety and the optimal performance of your vehicle.

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