2017 Porsche Cayenne Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2017 Porsche Cayenne 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 2017 Porsche Cayenne 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 2017 Porsche Cayenne 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 steps to diagnose the cruise control issue in a 2017 Porsche Cayenne?

To effectively diagnose a cruise control issue in your 2017 Porsche Cayenne, begin with the simplest solutions before moving on to more intricate assessments. Start by checking the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to engagement problems. If these initial checks do not reveal the issue, utilize a diagnostic scanner to identify any error codes from the vehicle's onboard computer, which can provide insights into specific malfunctions. Following this, verify the speed sensors, as they are essential for the cruise control system's operation; any faults here can significantly impact performance. Additionally, examine the wiring connections associated with the cruise control system for any signs of damage or loose connections, as these can also hinder functionality. Finally, if all else fails, test the cruise control module itself to confirm it is functioning correctly. By systematically following these steps, you can effectively diagnose and address the underlying issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2017 Porsche Cayenne?

When the cruise control in a 2017 Porsche Cayenne ceases to function, several common issues may be at play. One of the primary culprits is 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 the desired speed. Additionally, problems with the brake light switch can disrupt the cruise control's operation, as the system relies on signals from the brake system to function correctly. Another potential issue is a malfunctioning throttle actuator, which controls the engine's throttle opening and is crucial for maintaining speed. Electrical problems, such as faulty wiring or blown fuses, can also hinder the cruise control system's performance. Lastly, vacuum leaks within the system can lead to a loss of pressure, preventing the cruise control from engaging. By understanding these common problems, DIY enthusiasts can better diagnose and address the issues affecting their vehicle's cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2017 Porsche Cayenne?

Addressing a malfunctioning cruise control in a 2017 Porsche Cayenne is of utmost importance due to the immediate safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can create hazardous driving conditions for both the driver and others on the road. Additionally, a faulty cruise control system detracts from the overall driving experience, making long journeys less convenient and enjoyable. Ignoring these symptoms not only compromises safety but can also lead to more extensive damage to the vehicle's systems, resulting in costly repairs down the line. Therefore, it is crucial for owners to prioritize the diagnosis and repair of cruise control issues to ensure their vehicle operates safely and efficiently.

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