2023 Mercedes-Benz CLA45 AMG Cruise Control Isn't Working

Cruise Control Malfunctions in 2023 Mercedes-Benz CLA45 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 2023 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 2023 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.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

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 steps should I take to diagnose the non-functioning cruise control in my 2023 Mercedes-Benz CLA45 AMG?

To effectively diagnose the non-functioning cruise control in your 2023 Mercedes-Benz CLA45 AMG, begin with the simplest checks to avoid unnecessary complications. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, examine the cruise control buttons on your steering wheel to ensure they are operational; faulty buttons can prevent the system from engaging. If these initial checks do not resolve the problem, proceed to verify the speed sensor's functionality, as a malfunction here can disrupt the cruise control's operation. Utilizing a diagnostic scanner to scan for error codes can provide valuable insights into any underlying issues. Additionally, check the brake and clutch switches, as these components are crucial for the cruise control system to function correctly. Finally, inspect the wiring and connections for any signs of damage or corrosion, as poor connections can lead to system failures. By following this structured approach, you can systematically identify and address the root cause of your cruise control issues, ensuring a smoother driving experience.

What are the common problems that could cause the cruise control to malfunction in a 2023 Mercedes-Benz CLA45 AMG?

When dealing with cruise control malfunctions in a 2023 Mercedes-Benz CLA45 AMG, it's crucial to understand the common problems that may arise. One of the primary culprits is a faulty speed sensor, which can hinder the system's ability to maintain a steady speed. Additionally, a malfunctioning brake light switch can prevent the cruise control from engaging or disengaging as intended, leading to frustrating driving experiences. Throttle control issues may also arise, affecting the system's capacity to adjust speed accurately. Furthermore, electrical problems, such as blown fuses or wiring issues, can disrupt the cruise control's functionality. Lastly, software glitches within the vehicle's control module can introduce unexpected behavior in the cruise control system. By being aware of these potential issues, DIY enthusiasts can take proactive steps to diagnose and address cruise control problems, ensuring a smoother and safer driving experience. Regular maintenance and timely repairs are essential to keep the cruise control system operating optimally.

How urgent is it to address the malfunctioning cruise control in a 2023 Mercedes-Benz CLA45 AMG?

Addressing a malfunctioning cruise control in your 2023 Mercedes-Benz CLA45 AMG is not just a matter of convenience; it is a critical safety concern that requires immediate attention. A malfunction can lead to unpredictable acceleration or deceleration, significantly increasing the risk of accidents on the road. Moreover, the enjoyment and ease of driving that cruise control offers can be severely compromised, detracting from the overall driving experience. Ignoring these symptoms can also result in further damage to the vehicle, leading to more extensive and costly repairs down the line. Therefore, it is essential to prioritize the resolution of cruise control issues to ensure both your safety and the longevity of your vehicle.

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