2016 Mercedes-Benz CLA250 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2016 Mercedes-Benz CLA250 and How to Fix Them

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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 2016 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 2016 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.

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 initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2016 Mercedes-Benz CLA250?

When troubleshooting the non-functioning cruise control in your 2016 Mercedes-Benz CLA250, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse, as a blown fuse is a straightforward issue that can easily be resolved. Next, inspect the cruise control buttons on the steering wheel to ensure they are responsive; sometimes, dirt or wear can hinder their functionality. Following this, verify the speed sensors, which play a crucial role in the cruise control system by detecting vehicle speed; faulty sensors can lead to operational failures. Utilizing a diagnostic scanner to check for error codes can provide insights into any underlying issues that may not be immediately visible. Additionally, examine the brake and clutch switches, as these components are designed to disengage the cruise control when the pedals are pressed; malfunctioning switches can cause unexpected deactivation. Finally, inspect the wiring and connections associated with the cruise control system for any signs of damage or corrosion, as these can disrupt communication between components. By methodically following these steps, you can effectively diagnose and potentially resolve the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2016 Mercedes-Benz CLA250?

When the cruise control in your 2016 Mercedes-Benz CLA250 ceases to function, it can be frustrating, but understanding the common problems can guide you in diagnosing the issue. One frequent culprit is a faulty speed sensor, which is essential for the cruise control system to accurately gauge your vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Another common issue is related to the brake light switch; if this switch is defective, it may not properly signal the cruise control to disengage when the brake pedal is pressed, leading to operational failures. Additionally, problems with the throttle actuator can disrupt the system's ability to maintain a constant speed, as this component regulates the engine's throttle opening. Electrical issues, such as blown fuses or wiring problems, can also impede the cruise control's functionality, as can vacuum leaks in the engine that affect the necessary vacuum signals for operation. By identifying these potential issues, you can take the first steps toward restoring your cruise control system, whether through DIY repairs or seeking professional assistance.

How urgent is it to address the malfunctioning cruise control in a 2016 Mercedes-Benz CLA250?

When it comes to a malfunctioning cruise control in a 2016 Mercedes-Benz CLA250, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can lead to erratic speed changes, posing significant safety risks, particularly during highway driving where maintaining a consistent speed is crucial. Moreover, such malfunctions may signal deeper electronic or sensor-related problems that could compromise other vehicle functions, leading to a cascade of issues if left unchecked. Ignoring these symptoms not only jeopardizes your safety but can also result in decreased fuel efficiency and increased wear on the vehicle, ultimately leading to more costly repairs down the line. Therefore, it is essential to prioritize the diagnosis and repair of cruise control issues promptly, ensuring both your safety and the longevity of your vehicle.

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2016 Mercedes-Benz CLA250 Cruise Control Issues & Solutions