2022 Mercedes-Benz CLS450 Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2022 Mercedes-Benz CLS450

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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 2022 Mercedes-Benz CLS450 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 2022 Mercedes-Benz CLS450 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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2022 Mercedes-Benz CLS450?

When faced with a non-functional cruise control in your 2022 Mercedes-Benz CLS450, start by checking the cruise control fuse, as a blown or damaged fuse can often be the simplest fix. Next, ensure that the cruise control settings are correctly configured and activated according to your vehicle's manual, as incorrect settings can prevent the system from engaging. Utilizing a diagnostic scanner to check for any error codes related to the cruise control system is also crucial, as these codes can provide insight into underlying issues. Additionally, inspect the cruise control buttons on the steering wheel for any signs of physical damage or malfunction, as these components are vital for operation. Finally, while driving, attempt to engage the cruise control system to see if it responds; this practical test can help you determine if the issue lies within the system's engagement mechanism. By systematically 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 2022 Mercedes-Benz CLS450?

When the cruise control in your 2022 Mercedes-Benz CLS450 ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. 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 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. By identifying these potential problems, you can take the first steps toward troubleshooting and resolving the cruise control issues in your vehicle.

How urgent is it to address the malfunctioning cruise control in a 2022 Mercedes-Benz CLS450?

When it comes to a malfunctioning cruise control system in your 2022 Mercedes-Benz CLS450, the urgency of addressing the issue cannot be overstated. A faulty cruise control can significantly compromise your driving experience, making it inconvenient and potentially hazardous. Safety should always be a top priority; a malfunctioning system can lead to unexpected acceleration or deceleration, increasing the risk of accidents. Moreover, delaying repairs may exacerbate the problem, leading to more extensive damage to the vehicle's electronic systems, which could result in higher repair costs down the line. Therefore, it is crucial to act swiftly and consult a qualified mechanic or an authorized Mercedes-Benz service center to accurately diagnose and resolve the issue. By taking prompt action, you not only ensure your safety but also maintain the integrity and performance of your vehicle.

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