Mercedes-Benz S560e Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz S560e 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Mercedes-Benz S560e 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 Mercedes-Benz S560e 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.

Troubleshooting Cruise Control Issues in a Mercedes-Benz S560e

When troubleshooting cruise control issues in your Mercedes-Benz S560e, it's essential to adopt a methodical diagnostic approach. Start by checking the simplest components, such as the fuses related to the cruise control system, as a blown fuse can easily disrupt functionality. Next, inspect the brake light switch; even if your brake lights are operational, a faulty switch can prevent the cruise control from engaging. If these initial checks do not resolve the issue, examine the spiral cable within the steering wheel, as a malfunction here can hinder communication between the cruise control switch and the system. Additionally, ensure that the cruise control button is clean and free from debris, as dirt or damage can impede its operation. If these steps do not yield results, it may be time to consult a professional mechanic who specializes in Mercedes-Benz vehicles for a more in-depth diagnosis. By following this structured approach, you can effectively identify and address the root causes of cruise control problems, enhancing your driving experience.

What Could Cause the Cruise Control to Malfunction in a Mercedes-Benz S560e?

When dealing with cruise control malfunctions in a Mercedes-Benz S560e, it's essential to consider several common problems that could be at fault. A defective brake pedal switch is often the primary suspect, as it can prevent the cruise control from engaging properly. Additionally, a dead battery may disrupt the electrical systems, leading to cruise control failure. The ABS wheel speed sensor is another critical component; if it malfunctions, it can trigger warning lights and affect cruise control functionality. Blown fuses can also interrupt power to the cruise control system, while issues with the brake pedal position sensor can hinder its operation. Furthermore, a malfunctioning throttle body can impact the cruise control's ability to maintain speed. Problems with the PRNDL or shifter position switch may also contribute to these issues. To accurately diagnose the problem, using a diagnostic scanner to check the cruise control switch circuit is advisable, along with inspecting the wiring and connectors for any signs of damage. Lastly, ensure that the link rod connecting the cruise control actuator to the throttle is secure, as a loose or disconnected link can lead to significant operational issues. By systematically addressing these potential problems, DIYers can effectively troubleshoot and resolve cruise control malfunctions in their Mercedes-Benz S560e.

Why is the Cruise Control Not Working in a Mercedes-Benz S560e?

When your Mercedes-Benz S560e's cruise control is not functioning, it is crucial to address the issue without delay. Ignoring symptoms such as a non-responsive cruise control can lead to more significant problems, including potential safety hazards while driving. For instance, a defective brake pedal switch can prevent the cruise control from engaging, which may result in unexpected speed changes that could compromise your control of the vehicle. Additionally, if the problem stems from a faulty ABS wheel speed sensor, it could trigger warning lights and affect other systems, leading to costly repairs down the line. Furthermore, issues like blown fuses or malfunctioning throttle control systems can escalate if not resolved quickly. Therefore, it is advisable to have your vehicle inspected by a professional service team to diagnose the root cause of the cruise control failure and ensure your driving experience remains safe and reliable.

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