2020 Tesla S Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2020 Tesla S

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Reviewed by
Aisha
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 2020 Tesla S 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 are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2020 Tesla S?

When faced with a non-functioning cruise control in your 2020 Tesla Model S, start by checking the cruise control settings on the vehicle's display. Ensure that the system is activated and set to your desired speed. Next, inspect the sensors that play a crucial role in cruise control functionality, including the radar sensor and cameras; make sure they are clean and unobstructed. It's also important to review any error messages displayed on the dashboard, as these can provide insights into the problem. If everything appears normal, try restarting the vehicle, as this can often clear minor software glitches. Additionally, check for any available software updates, as Tesla frequently releases updates that may address cruise control issues. Finally, consult the owner's manual for specific troubleshooting guidance tailored to your vehicle. By following these steps, you can systematically diagnose and potentially resolve the cruise control issue, ensuring a smoother driving experience.

What are the common problems that could cause the cruise control to stop working in a 2020 Tesla S?

When the cruise control in a 2020 Tesla Model S ceases to function, several common problems may be at play. One frequent culprit is a software glitch, which can disrupt the system's normal operations. Additionally, sensor issues can arise, as the sensors responsible for monitoring speed and distance are crucial for cruise control functionality. A malfunctioning cruise control module may also prevent the system from engaging or maintaining speed, while problems with the brake light switch can inadvertently disengage the cruise control when the brakes are applied. Lastly, issues with the throttle control system can hinder the cruise control's ability to regulate speed effectively. For those looking to diagnose these issues themselves, it's important to check for software updates, inspect the sensors, and ensure that all related components are functioning properly. However, for a thorough diagnosis and repair, consulting a qualified technician is recommended to ensure the cruise control system operates safely and effectively.

How urgent is it to address the malfunctioning cruise control in a 2020 Tesla S?

When it comes to a malfunctioning cruise control system in a 2020 Tesla Model S, the urgency to address the issue cannot be overstated. Cruise control is a critical feature that enhances the driving experience by allowing drivers to maintain a steady speed without constant manual input. If this system fails, it not only disrupts the convenience of driving but also poses significant safety risks. A malfunctioning cruise control can lead to unintended acceleration or deceleration, increasing the likelihood of accidents. Moreover, modern vehicles like the Tesla Model S have complex electronic systems that are interconnected; neglecting a cruise control issue could potentially lead to further complications with other vehicle systems, resulting in more extensive and costly repairs down the line. For those considering a DIY approach, it is essential to recognize the limitations of personal expertise and the specialized nature of Tesla's technology. Therefore, while some troubleshooting may be feasible, seeking assistance from a certified Tesla service center is highly recommended to ensure a thorough and effective diagnosis and repair. Taking prompt action not only safeguards your safety but also preserves the overall performance and reliability of your vehicle.

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