Mercedes-Benz R63 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz R63 AMG and How to Fix Them

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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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Mercedes-Benz R63 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 Mercedes-Benz R63 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.

Troubleshooting Cruise Control Issues in a Mercedes-Benz R63 AMG

When troubleshooting cruise control issues in your Mercedes-Benz R63 AMG, it's essential to adopt a methodical diagnostic approach. Start by checking the instrument cluster for any warning messages, as these can provide immediate clues about the underlying problem. Next, inspect the spiral cable in the steering wheel, which is crucial for communication with the cruise control system; any damage here could lead to intermittent functionality. Following this, verify the condition of electrical components and connectors, as poor connections can disrupt the system's operation. Additionally, test the brake light switch, since a malfunctioning switch can prevent the cruise control from engaging. Finally, ensure that all fuses are intact and functioning properly, as a blown fuse can completely disable the cruise control system. By following these steps, you can effectively diagnose and potentially resolve the cruise control issues, restoring functionality to your vehicle.

What Are the Common Problems Causing Cruise Control Issues in a Mercedes-Benz R63 AMG?

When dealing with cruise control issues in a Mercedes-Benz R63 AMG, it's crucial to understand the common problems that may arise. One of the primary culprits is a failed control module, which can disrupt the entire cruise control system's functionality. Additionally, sensor or switch malfunctions can prevent the system from engaging or maintaining speed, leading to frustrating driving experiences. Another significant factor is throttle actuation problems, where the throttle may not respond correctly to the cruise control commands, further complicating the situation. By familiarizing yourself with these potential issues, you can take the first steps toward diagnosing and resolving cruise control malfunctions in your vehicle, ensuring a smoother and more enjoyable driving experience.

Why is the Cruise Control Not Working in a Mercedes-Benz R63 AMG?

When the cruise control in your Mercedes-Benz R63 AMG is not functioning, it is crucial to address the issue promptly to avoid potential safety hazards and further mechanical complications. A malfunctioning cruise control system can lead to erratic vehicle behavior, making it difficult to maintain a safe speed, especially on highways. Common culprits such as a defective brake pedal switch or a dead battery can disrupt the system's operation, while issues with the ABS wheel speed sensor or throttle control can exacerbate the problem. Ignoring these symptoms may not only compromise your driving safety but could also lead to more significant repairs down the line, such as replacing faulty sensors or addressing electrical issues. Therefore, if you notice any signs of cruise control failure, it is advisable to seek professional inspection and repair to ensure your vehicle remains safe and reliable on the road.

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