2023 Mercedes-Benz CLA250 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2023 Mercedes-Benz CLA250

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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 CLA250 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 CLA250 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 cruise control issue in my 2023 Mercedes-Benz CLA250?

To effectively diagnose the cruise control issue in your 2023 Mercedes-Benz CLA250, begin with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable problem that can disrupt functionality. Next, examine the cruise control buttons on your steering wheel to ensure they are operational, as malfunctioning buttons can also lead to issues. If these initial checks do not resolve the problem, utilize an OBD-II scanner to identify any error codes that may indicate specific faults within the cruise control system. Following this, inspect the speed sensors, as faulty sensors can prevent the cruise control from engaging properly. Additionally, check the brake and clutch switches to ensure they are functioning correctly, as these components are crucial for disengaging the cruise control when necessary. If all else fails, consider testing the cruise control module itself, as a malfunction here may require repair or replacement. By following this structured diagnostic approach, you can efficiently identify and address the underlying issues affecting your vehicle's cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2023 Mercedes-Benz CLA250?

When the cruise control in your 2023 Mercedes-Benz CLA250 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 speed sensor, which is crucial for the system to accurately gauge your vehicle's speed. If this sensor malfunctions, the cruise control may fail to engage or maintain speed. Another frequent issue arises from the brake light switch; if this switch is defective, it may not signal the cruise control system to disengage when the brake pedal is pressed, leading to operational failures. Additionally, a malfunctioning throttle actuator can disrupt the system's ability to maintain a steady speed, as it directly controls the engine's throttle. Electrical problems, such as blown fuses or wiring issues, can also impede the cruise control's functionality, as can vacuum leaks in the engine, which affect the necessary vacuum pressure for the system to operate correctly. By systematically checking these components, you can effectively troubleshoot and potentially resolve the cruise control issues in your CLA250.

How urgent is it to address the malfunctioning cruise control in my 2023 Mercedes-Benz CLA250?

Addressing a malfunctioning cruise control system in your 2023 Mercedes-Benz CLA250 is of utmost importance due to the immediate safety risks it poses. A faulty cruise control can lead to erratic vehicle behavior, such as unexpected acceleration or deceleration, which can significantly increase the likelihood of accidents. Beyond safety, neglecting this issue can adversely affect your vehicle's overall performance, potentially leading to more extensive and costly repairs down the line. Additionally, driving with a malfunctioning cruise control may violate local road safety regulations, exposing you to fines or legal repercussions. Lastly, maintaining your vehicle's systems, including cruise control, is crucial for preserving its resale value; a well-maintained car is more appealing to potential buyers. Therefore, it is essential to prioritize the repair of your cruise control system to ensure your safety, maintain vehicle performance, comply with legal standards, and protect your investment.

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