2020 Porsche 911 Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2020 Porsche 911 and How to Fix Them

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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 2020 Porsche 911 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 2020 Porsche 911 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.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2020 Porsche 911?

When troubleshooting the non-functioning cruise control in a 2020 Porsche 911, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse, as a blown or damaged fuse can easily disrupt the system's functionality. Next, ensure that the cruise control settings are correctly configured according to the vehicle's manual, as incorrect settings can prevent engagement. Utilizing a diagnostic tool to scan for error codes is also crucial, as it can reveal underlying issues that may not be immediately visible. Additionally, inspect the cruise control buttons on the steering wheel for any signs of damage or malfunction, as these controls are vital for operation. Finally, test the cruise control engagement to determine if it activates at all; if it does not, further investigation into potential sensor malfunctions or wiring issues may be necessary. By following these steps, you can effectively diagnose and address the cruise control problems in your Porsche 911.

What are the common problems that could cause the cruise control to stop working in a 2020 Porsche 911?

When the cruise control in a 2020 Porsche 911 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 essential for the cruise control system to accurately gauge the vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain speed. Another frequent issue arises from the brake light switch; if this switch is defective, it can disrupt the cruise control's operation since the system is designed to disengage when the brakes are applied. Additionally, a malfunctioning throttle actuator can hinder the system's ability to maintain a steady speed, as it controls the engine's throttle opening. Electrical problems, including blown fuses or wiring issues, can also impede the cruise control's functionality, as can vacuum leaks within the system. By identifying these potential issues, DIYers can take the first steps toward diagnosing and possibly fixing the cruise control system in their Porsche 911.

How urgent is it to address the malfunctioning cruise control in my 2020 Porsche 911?

When it comes to the malfunctioning cruise control in your 2020 Porsche 911, the urgency to address the issue cannot be overstated. A faulty cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk not only to you but also to other road users. Ignoring these symptoms can result in dangerous driving conditions and increase the likelihood of accidents. Moreover, delaying repairs may exacerbate the problem, potentially leading to more extensive damage to your vehicle's systems, which could translate into costly repairs down the line. Therefore, it is crucial to consult a qualified mechanic or an authorized Porsche service center as soon as you notice any irregularities. Taking prompt action not only ensures your safety but also helps maintain the integrity and performance of your vehicle.

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