2012 Mercedes-Benz CL65 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in 2012 Mercedes-Benz CL65 AMG

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Reviewed by
Bo Fader
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 2012 Mercedes-Benz CL65 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 2012 Mercedes-Benz CL65 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.

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.

What are the steps to diagnose the cruise control issue in a 2012 Mercedes-Benz CL65 AMG?

To effectively diagnose a cruise control issue in a 2012 Mercedes-Benz CL65 AMG, it's essential to adopt a systematic approach that begins with the simplest potential problems before progressing to more complex diagnostics. Start by checking the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to engagement issues. Utilizing a diagnostic scanner to check for error codes is a crucial step, as it can reveal specific malfunctions within the cruise control system. Additionally, verify the speed sensors, which are vital for the cruise control's performance; any faults here can significantly impact its operation. It's also important to examine the wiring and connections for signs of damage or corrosion, as poor connections can hinder the system's effectiveness. Finally, testing the cruise control module itself will help confirm whether it is functioning correctly, as a malfunctioning module can prevent the cruise control from engaging altogether. By following this structured diagnostic approach, you can efficiently identify and address the underlying issues affecting the cruise control system in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2012 Mercedes-Benz CL65 AMG?

When the cruise control in your 2012 Mercedes-Benz CL65 AMG ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging if it fails to signal that the brake pedal has been pressed. Additionally, issues with the speed sensor can disrupt the system, as it relies on accurate speed readings to maintain control. Another potential problem is vacuum leaks within the cruise control system, which can interfere with its operation. If these components check out, consider the cruise control module itself, as a defect here can lead to complete system failure. Lastly, don’t overlook electrical problems, such as blown fuses or wiring issues, which can also impact the functionality of your cruise control. By systematically checking these areas, you can identify and resolve the issue, restoring your vehicle's cruise control to working order.

How urgent is it to address the non-functioning cruise control in a 2012 Mercedes-Benz CL65 AMG?

Addressing the non-functioning cruise control in a 2012 Mercedes-Benz CL65 AMG is more urgent than it may initially seem. While it might not pose an immediate threat like a brake failure, the cruise control system is integral to maintaining a safe and comfortable driving experience, especially on long journeys. A malfunctioning cruise control can indicate deeper issues within the vehicle's electronic systems or sensors, which, if left unchecked, could escalate into more significant problems. Moreover, relying on manual speed control can lead to driver fatigue and increased risk of accidents, particularly on highways where cruise control is frequently utilized. By prioritizing the repair of this feature, you not only enhance your driving safety but also prevent potential damage to other vehicle components, ultimately saving on future repair costs. Therefore, it is advisable to have the cruise control system inspected and repaired promptly to ensure the optimal performance and safety of your Mercedes-Benz CL65 AMG.

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2012 Mercedes-Benz CL65 AMG Cruise Control Issues & Repairs