Mercedes-Benz E63 AMG S Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz E63 AMG S 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 Mercedes-Benz E63 AMG S 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 E63 AMG S 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.

Troubleshooting Cruise Control Issues in a Mercedes-Benz E63 AMG S

When troubleshooting cruise control issues in a Mercedes-Benz E63 AMG S, it's essential to adopt a systematic diagnostic approach. Start by checking the simplest potential problems, such as inspecting the fuse related to the cruise control system. A blown fuse can often be the culprit behind a non-functioning system. Next, examine the brake light switch, as a faulty switch can prevent the cruise control from engaging, even if the brake lights appear to be working. If the cruise control is still inoperative and warning lights are illuminated on the dashboard, this may indicate a more complex issue that requires further investigation, possibly involving the vehicle's electronic systems. In cases where the cruise control operates intermittently, consider performing a full vehicle shutdown and restart, as this can sometimes reset the system and clear any temporary faults. Additionally, if you encounter an annoying flashing ring while using the cruise control, simply activating the system and allowing it to run for a short period may resolve the issue. By following this structured approach, you can effectively identify and address the underlying causes of cruise control malfunctions in your E63 AMG S.

What Could Cause the Cruise Control to Malfunction in a Mercedes-Benz E63 AMG S?

When dealing with cruise control malfunctions in a Mercedes-Benz E63 AMG S, it's crucial to understand the common problems that may arise. One frequent issue is a defective brake pedal switch, which can prevent the cruise control from engaging properly. Additionally, a faulty ABS wheel speed sensor can trigger warning lights and disrupt the cruise control functionality. It's also important to inspect the control stalk and the connections to the throttle body, as these components can wear out or become damaged over time. The multi-function relay is another potential culprit that could affect the system's performance. For a thorough diagnosis, using a diagnostic scanner can help identify specific circuit issues, including any damaged wiring in the cruise control circuit. By systematically checking these components and conducting visual inspections, DIYers can effectively pinpoint the root cause of the malfunction and take the necessary steps to restore the cruise control system to full functionality.

Why is the Cruise Control Not Working in a Mercedes-Benz E63 AMG S?

When the cruise control in your Mercedes-Benz E63 AMG S is not functioning, it is crucial to address the problem promptly, as neglecting it can lead to safety risks and potentially more significant vehicle damage. Common culprits include a defective brake pedal switch, which can prevent the system from engaging, or a blown fuse that disrupts electrical connections. Additionally, issues with the throttle control system or the ABS can also interfere with cruise control functionality. In older models, a broken vacuum line may be responsible for the malfunction. Furthermore, an ESP error can disable cruise control, often linked to problems with the brake light switch, wheel speed sensors, or steering angle sensors. Given the complexity of these systems, it is advisable to seek professional inspection and repair to ensure your vehicle operates safely and efficiently. Addressing these issues not only enhances your driving experience but also safeguards against potential hazards on the road.

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