2020 Mercedes-Benz GLA250 Cruise Control Isn't Working

Fixing cruise control issues in the 2020 Mercedes-Benz GLA250

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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
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2020 Mercedes-Benz GLA250 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 2020 Mercedes-Benz GLA250 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 steps should I take to diagnose the non-functioning cruise control in my 2020 Mercedes-Benz GLA250?

To effectively diagnose the non-functioning cruise control in your 2020 Mercedes-Benz GLA250, 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 fuse box; a blown fuse is an easy fix that can often resolve the issue. Next, examine the cruise control buttons on your steering wheel for any signs of sticking or damage, as these can hinder functionality. If the buttons appear to be in good condition, proceed to verify the speed sensor, as a malfunctioning sensor can disrupt the cruise control system's operation. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, inspect the brake and clutch switches, as faulty switches can prevent the cruise control from engaging altogether. Finally, ensure that all wiring connections related to the cruise control system are secure and free from damage. By following this diagnostic approach, you can efficiently identify the root cause of the cruise control malfunction and take appropriate action to restore its functionality.

What are the common problems that could cause the cruise control to stop working in a 2020 Mercedes-Benz GLA250?

When the cruise control in your 2020 Mercedes-Benz GLA250 ceases to function, it can be frustrating, but understanding the common problems can help you troubleshoot 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 the desired speed. Another frequent issue arises from the brake light switch; if this switch is defective, it may incorrectly signal the cruise control to disengage, preventing it from working properly. Additionally, problems with the throttle actuator can hinder the system's ability to maintain speed, as this component regulates the engine's throttle opening. A defective cruise control module can also disrupt communication between various system components, leading to operational failures. Lastly, electrical issues such as wiring problems or blown fuses can significantly impact the cruise control's functionality. By identifying these potential issues, you can take the first steps toward diagnosing and fixing the cruise control system in your GLA250, whether you choose to tackle the repairs yourself or consult a professional.

How urgent is it to address the malfunctioning cruise control in my 2020 Mercedes-Benz GLA250?

When it comes to the malfunctioning cruise control in your 2020 Mercedes-Benz GLA250, the urgency of addressing this issue cannot be overstated. A faulty cruise control system poses significant safety risks, as it can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which can result in accidents. Moreover, a malfunctioning system detracts from the overall driving experience, making it challenging to maintain a steady speed and causing discomfort for both the driver and passengers. Timely intervention is also crucial for preserving your vehicle's performance; neglecting the issue may lead to further complications that could affect related components, ultimately resulting in more extensive and costly repairs. Therefore, it is essential to prioritize the diagnosis and repair of your cruise control system to ensure not only your safety but also the longevity and efficiency of your Mercedes-Benz GLA250.

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