2016 Mercedes-Benz CLA45 AMG Cruise Control Isn't Working

Fix Cruise Control Malfunctions in Your 2016 Mercedes-Benz CLA45 AMG

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Reviewed by
Aisha
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 2016 Mercedes-Benz CLA45 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 2016 Mercedes-Benz CLA45 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.

What are the steps to diagnose the non-functioning cruise control in a 2016 Mercedes-Benz CLA45 AMG?

To effectively diagnose the non-functioning cruise control in your 2016 Mercedes-Benz CLA45 AMG, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the vehicle's fuse box, as a blown fuse can often be the simplest explanation for the issue. Next, examine the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying electronic issues. Additionally, inspect the speed sensors on the wheels, as they play a crucial role in the cruise control's functionality. Ensure that the brake and clutch switches are operating correctly, since these components are designed to disengage the cruise control when necessary. A thorough inspection of the wiring and connections related to the cruise control system is also essential, as damaged or loose connections can disrupt functionality. Finally, test the cruise control module to confirm it is sending and receiving signals properly. If these steps do not resolve the issue, seeking assistance from a professional mechanic or an authorized Mercedes-Benz service center is advisable to ensure a comprehensive diagnosis and repair. By following this structured approach, you can efficiently identify the root cause of the cruise control malfunction.

What are the common problems that could cause the cruise control to stop working in a 2016 Mercedes-Benz CLA45 AMG?

When diagnosing why the cruise control has stopped working in a 2016 Mercedes-Benz CLA45 AMG, it's essential to consider several common issues that could be at play. A faulty speed sensor is often a primary culprit, as it is responsible for relaying accurate speed information to the cruise control system; if it malfunctions, the system may fail to engage or maintain speed. Additionally, the brake light switch plays a critical role, as any issues here can disrupt the signals necessary for the cruise control to function properly. Another potential problem could be a malfunctioning throttle actuator, which directly affects the engine's throttle response and can hinder the cruise control's ability to maintain speed. Electrical problems, such as blown fuses or wiring issues, can also lead to cruise control failure, as the system relies on a stable electrical connection. Lastly, vacuum leaks within the engine can impact overall performance and responsiveness, further complicating the cruise control's operation. Addressing these issues promptly can help restore the functionality of the cruise control system in your vehicle.

How urgent is it to address the malfunctioning cruise control in my 2016 Mercedes-Benz CLA45 AMG?

Addressing a malfunctioning cruise control in your 2016 Mercedes-Benz CLA45 AMG is of utmost importance due to the immediate safety risks it poses. A faulty system can lead to erratic acceleration or deceleration, which can result in dangerous driving conditions and increase the likelihood of accidents. Additionally, the comfort of your driving experience is compromised, particularly during long journeys where cruise control is typically utilized for ease. Ignoring these symptoms not only affects your driving experience but can also lead to more severe issues within the vehicle's systems, potentially resulting in costly repairs. Therefore, it is crucial to prioritize the repair of your cruise control system to ensure both your safety and the longevity of your vehicle.

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2016 Mercedes-Benz CLA45 AMG Cruise Control Fix Guide