2018 Volkswagen Passat Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Volkswagen Passat and How to Fix Them

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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 2018 Volkswagen Passat 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 2018 Volkswagen Passat 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 2018 Volkswagen Passat?

To effectively diagnose a cruise control issue in a 2018 Volkswagen Passat, it's essential to adopt a systematic approach that begins with the simplest checks before progressing to more complex diagnostics. Start by examining the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to engagement problems. Utilizing an OBD-II scanner to scan for error codes is a crucial step, as it can reveal specific issues within the cruise control system. Additionally, checking the vehicle's speed sensors is vital, as these components are integral to the cruise control's performance; any malfunction here can hinder its operation. Don't overlook the brake lights, as a malfunctioning brake light switch can prevent the cruise control from engaging altogether. Finally, testing the cruise control module will help determine if it is sending the correct signals, as a faulty module can be the root cause of the issue. By following this structured diagnostic approach, you can efficiently identify and address the cruise control problems in your Volkswagen Passat.

What are the common problems that could cause the cruise control to stop working in a 2018 Volkswagen Passat?

When the cruise control in your 2018 Volkswagen Passat ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty brake pedal switch, which is crucial for the cruise control system as it disengages the system when the brake is applied. If this switch is malfunctioning, it may prevent the cruise control from engaging at all. Another potential issue could be related to the speed sensor; if this component is not providing accurate readings, the cruise control may struggle to maintain a steady speed. Additionally, a blown fuse can disrupt the entire cruise control system, rendering it inoperable. It's also worth checking the throttle actuator, as any malfunction here can directly affect the cruise control's ability to function properly. Lastly, a defective cruise control module can be a significant factor in the system's failure. By systematically checking these components, you can identify and address the root cause of your cruise control issues, potentially saving time and money on repairs.

How urgent is it to address the malfunctioning cruise control in a 2018 Volkswagen Passat?

Addressing a malfunctioning cruise control in a 2018 Volkswagen Passat is of utmost importance due to the potential safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, creating hazardous driving conditions that could endanger both the driver and other road users. Additionally, neglecting this issue may compromise the overall driving experience, making it inconvenient to use this feature when needed. Furthermore, a faulty cruise control system can result in inconsistent speed control, which may lead to increased fuel consumption and higher operating costs. By addressing the malfunction promptly, you not only enhance your safety but also protect your vehicle from further damage, ensuring that all systems function optimally. Therefore, it is crucial to take immediate action to resolve any cruise control issues to maintain both safety and vehicle performance.

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