2023 Mercedes-Benz C43 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2023 Mercedes-Benz C43 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 2023 Mercedes-Benz C43 AMG cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
  • Control Module: A faulty control module can result in 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 acceleration and poor engine 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 C43 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.

How do I diagnose the cruise control issue in my 2023 Mercedes-Benz C43 AMG?

To effectively diagnose the cruise control issue in your 2023 Mercedes-Benz C43 AMG, start with the simplest potential problems before moving on to more complex diagnostics. Begin by checking the brake pedal switch, as a malfunction here is a common culprit for cruise control failures in Mercedes-Benz vehicles. Next, inspect the ABS wheel speed sensor, since a faulty sensor can disrupt the cruise control system's operation. Additionally, examine the spiral cable within the steering wheel; if this cable is damaged, it can impede communication between the control switch and the cruise control system. It's also crucial to look for any electrical issues, such as faulty connectors or components that may be affecting functionality. If these steps do not resolve the issue, it may be time to consult a professional mechanic or dealership for a comprehensive inspection and repair. By following this diagnostic approach, you can systematically identify and address the root cause of your cruise control problem.

Common Issues Causing Cruise Control Failure in 2023 Mercedes-Benz C43 AMG

When experiencing cruise control failure in your 2023 Mercedes-Benz C43 AMG, it's crucial to understand the common problems that may be at play. One of the primary culprits could be the control module, which is responsible for managing the cruise control system. If this module is malfunctioning, it can prevent the cruise control from engaging properly. Additionally, sensor problems are another frequent issue; sensors that monitor vehicle speed and throttle position can fail or send incorrect signals, leading to cruise control inoperability. Throttle issues, such as a stuck or malfunctioning throttle body, can also disrupt the cruise control functionality, as the system relies on precise throttle control to maintain speed. Lastly, there may be other less common factors contributing to the failure, such as wiring issues or software glitches. To effectively address the cruise control problem, a thorough diagnosis is essential, allowing you to pinpoint the exact cause and take the necessary steps for repair.

How urgent is it to address the malfunctioning cruise control in a 2023 Mercedes-Benz C43 AMG?

When it comes to a malfunctioning cruise control in your 2023 Mercedes-Benz C43 AMG, understanding the urgency of the situation is crucial. While it may not seem like an immediate emergency, neglecting the issue can lead to significant inconveniences and potential safety risks. A malfunctioning cruise control can disrupt your driving experience, particularly on long journeys where this feature is most beneficial. Moreover, the underlying causes of the malfunction—such as issues with the Control Module, Sensor, or Throttle—could indicate more serious problems that, if left unaddressed, might escalate into costly repairs. Additionally, if the cruise control system is affected by low electrical voltage, it may not function properly until the root cause is resolved, which can be frustrating during your drives. Furthermore, complications with components like the brake pedal switch can not only hinder the cruise control's operation but also pose safety concerns. Therefore, while it may not require immediate action, addressing the malfunction promptly is essential for ensuring a smooth and safe driving experience in your vehicle.

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