2019 Mercedes-Benz Maybach S650 Cruise Control Isn't Working

Fixing Cruise Control Issues in 2019 Mercedes-Benz Maybach S650

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Reviewed by
Devin Cabugcal
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 2019 Mercedes-Benz Maybach S650 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 non-functioning cruise control in my 2019 Mercedes-Benz Maybach S650?

To effectively diagnose the non-functioning cruise control in your 2019 Mercedes-Benz Maybach S650, 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 a straightforward fix that can often resolve the issue. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, as malfunctioning buttons can disrupt the system's functionality. Following this, verify the speed sensors, as these components are crucial for the cruise control to engage properly. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, assess the brake and clutch switches, since faulty switches can prevent the cruise control from activating. Finally, inspect the wiring and connections associated with the cruise control system for any signs of damage or corrosion, as these can lead to connectivity problems. By following this structured diagnostic approach, you can efficiently identify and address the root cause of your cruise control malfunction.

What are the common problems that could cause the cruise control to stop working in a 2019 Mercedes-Benz Maybach S650?

When the cruise control in a 2019 Mercedes-Benz Maybach S650 ceases to function, several common issues may be at play. One primary culprit could be a faulty speed sensor, which is essential for the system to accurately gauge the vehicle's speed; if this sensor malfunctions, the cruise control may fail to engage or maintain speed. Additionally, problems with the brake light switch can disrupt the system, as it is designed to disengage when the brake pedal is pressed. If the switch is faulty, it may not signal the cruise control to turn off, leading to operational issues. Another potential problem lies with the throttle actuator, which regulates the engine's throttle opening; if this component is malfunctioning, the cruise control may struggle to maintain a steady speed. Electrical issues, such as blown fuses or wiring problems, can also hinder the cruise control's performance, as can software glitches within the vehicle's onboard computer system. Addressing these common problems can help restore the cruise control functionality, making it easier for DIY enthusiasts to troubleshoot and resolve the issue effectively.

How urgent is it to address the malfunctioning cruise control in a 2019 Mercedes-Benz Maybach S650?

When it comes to a malfunctioning cruise control system in a 2019 Mercedes-Benz Maybach S650, the urgency of addressing the issue cannot be overstated. A malfunctioning cruise control can significantly disrupt your driving experience, making it not only inconvenient but also potentially hazardous. If the system is not functioning correctly, it may lead to unexpected acceleration or deceleration, which poses serious safety risks, especially on highways where maintaining a steady speed is crucial. Moreover, neglecting these symptoms can result in further complications, including increased wear on the vehicle's components, which could lead to more extensive and costly repairs down the line. For those considering a DIY approach, it is essential to recognize that while some issues may seem minor, they can escalate quickly if not addressed. Therefore, seeking professional assistance to accurately diagnose and repair the cruise control system is highly advisable to ensure both your safety and the longevity of your vehicle. Taking prompt action not only enhances your driving experience but also safeguards you and others on the road.

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