Mercedes-Benz CLS53 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz CLS53 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 CLS53 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 CLS53 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.

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.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

Troubleshooting Cruise Control Issues in a Mercedes-Benz CLS53 AMG

When troubleshooting cruise control issues in your Mercedes-Benz CLS53 AMG, start with the simplest potential problems before moving on to more complex diagnostics. Begin by inspecting the cruise control button for any dirt or debris that may be obstructing its function; a clean button can often resolve the issue. Next, check the brake light switch, as a malfunctioning switch can disrupt the cruise control system even if the brake lights appear to be working. If these initial checks do not yield results, examine the electrical connections related to the cruise control system for any signs of wear or damage, as faulty wiring can prevent proper operation. Additionally, inspect the spiral cable in the steering wheel, as a defective cable can hinder communication between the control switch and the cruise control system. Lastly, consider the possibility of defective components or sensors, such as ABS sensors, which are crucial for cruise control functionality. By following this diagnostic approach, you can effectively identify and address the common causes of cruise control issues in your vehicle. If the problem persists after these checks, seeking assistance from a professional mechanic may be necessary to ensure a thorough resolution.

What Are the Common Causes of Cruise Control Malfunction in a Mercedes-Benz CLS53 AMG?

When dealing with cruise control malfunctions in a Mercedes-Benz CLS53 AMG, it's essential to recognize several common problems that could be at play. One frequent issue is the failure of the control module, which can disrupt the entire cruise control system. Additionally, defective sensors or switches are often culprits, as they play a crucial role in the system's operation. It's also important to consider the ABS sensors; if any of these sensors fail, it can lead to the cruise control being disabled. Problems with the throttle control system can further complicate matters, as can issues with the brake pedal switch or a blown fuse. For those looking to troubleshoot these issues themselves, inspecting these components can be a good starting point. However, given the complexity of the system, consulting a qualified technician for a thorough diagnosis may ultimately be necessary to ensure a proper fix.

Why is the Cruise Control Not Working in a Mercedes-Benz CLS53 AMG?

When the cruise control in your Mercedes-Benz CLS53 AMG is not functioning, it is crucial to address the issue without delay. Ignoring symptoms such as erratic speed maintenance or sudden disengagement can lead to dangerous driving conditions, particularly on highways where consistent speed is essential for safety. A faulty speed sensor, for instance, can mislead the system, causing it to fail at maintaining your desired speed, which may result in unintended acceleration or deceleration. Additionally, a malfunctioning brake light switch can prevent the cruise control from disengaging when you apply the brakes, posing a significant risk of collision. Electrical issues, such as blown fuses or wiring problems, can further complicate the situation, potentially leading to more extensive damage if left unresolved. Moreover, software glitches in the vehicle's control module can disrupt the entire system, necessitating immediate attention. Therefore, it is advisable to consult a qualified mechanic or authorized service center as soon as you notice any cruise control malfunctions to ensure your vehicle remains safe and reliable on the road.

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