2023 Mercedes-Benz EQB 350 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2023 Mercedes-Benz EQB 350 and How to Fix Them

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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 2023 Mercedes-Benz EQB 350 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.

What steps should I take to diagnose the cruise control issue in my 2023 Mercedes-Benz EQB 350?

To effectively diagnose the cruise control issue in your 2023 Mercedes-Benz EQB 350, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, inspect the cruise control buttons on your steering wheel to ensure they are responsive and not stuck, as faulty buttons can lead to operational problems. If these initial checks do not reveal the issue, use an OBD-II scanner to identify any error codes that may indicate specific malfunctions within the cruise control system. Pay close attention to the speed sensors, as they are essential for the cruise control's performance; ensure they are functioning correctly. Additionally, examine the wiring and connections associated with the cruise control system for any signs of damage or loose connections that could be causing the malfunction. If all else fails, test the cruise control module itself, as a malfunctioning module can be the root of the problem. Should you still be unable to pinpoint the issue, it may be wise to consult a professional mechanic or an authorized Mercedes-Benz service center for a comprehensive diagnosis and repair. By following this structured approach, you can systematically identify and address the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2023 Mercedes-Benz EQB 350?

When the cruise control in your 2023 Mercedes-Benz EQB 350 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 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 frequent issue arises from the brake light switch; if this switch is defective, it can inadvertently signal the cruise control to deactivate whenever the brakes are applied, disrupting its operation. Additionally, a malfunctioning throttle actuator can hinder the cruise control's ability to adjust the throttle position, further complicating its functionality. In some cases, the cruise control module itself may be at fault, requiring repair or replacement to restore proper operation. Lastly, electrical problems such as blown fuses or wiring issues can also impact the cruise control system, leading to its failure. By identifying these potential issues, you can take the first steps toward diagnosing and resolving the problem, whether through DIY repairs or seeking professional assistance.

How urgent is it to address the malfunctioning cruise control in a 2023 Mercedes-Benz EQB 350?

When it comes to the malfunctioning cruise control in your 2023 Mercedes-Benz EQB 350, the urgency of addressing this issue cannot be overstated. A faulty cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which significantly increases the risk of accidents on the road. Moreover, neglecting this problem may not only compromise your safety but could also result in more extensive damage to other vehicle components, leading to costly repairs down the line. By prioritizing the repair of your cruise control, you not only enhance your driving comfort and convenience but also ensure a safer driving experience for yourself and others on the road. Therefore, it is essential to act swiftly and seek professional assistance to resolve any cruise control malfunctions as soon as they arise.

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