2018 BMW 330i GT XDrive Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2018 BMW 330i GT xDrive

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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 2018 BMW 330i GT xDrive 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 BMW 330i GT xDrive 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 steps should I take to diagnose the cruise control issue in my 2018 BMW 330i GT xDrive?

To effectively diagnose the cruise control issue in your 2018 BMW 330i GT xDrive, begin with the simplest solutions before progressing to more complex diagnostics. Start by checking the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, inspect the cruise control buttons on your steering wheel to ensure they are operational, since faulty buttons can lead to malfunctions. If these initial checks do not resolve the issue, utilize an OBD-II scanner to identify any error codes that may indicate specific problems within the cruise control system. Pay close attention to the speed sensors, as they are essential for the system's operation; ensure they are functioning correctly. Additionally, examine the wiring connections associated with the cruise control system for any signs of damage or loose connections. If the problem persists, test the cruise control module itself, as a malfunctioning module can be a common culprit. Should you find that these steps do not lead to a resolution, it may be time to consult a professional mechanic who specializes in BMW vehicles for a thorough diagnosis and repair. By following this structured approach, you can systematically identify and address the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2018 BMW 330i GT xDrive?

When dealing with cruise control issues in a 2018 BMW 330i GT xDrive, it's essential to understand the common problems that may arise. One frequent culprit is a faulty speed sensor, which can disrupt the system's ability to maintain the desired speed. Additionally, a malfunctioning brake light switch can cause the cruise control to disengage unexpectedly, even when the brakes are not applied. Another potential issue lies with the throttle actuator, which may hinder communication between the cruise control system and the engine, leading to operational problems. Vacuum leaks in the engine can also impact the system's performance, preventing it from maintaining a steady speed. Lastly, electrical problems, such as blown fuses or wiring issues, can interfere with the cruise control's functionality. By identifying these common issues, DIY enthusiasts can take the first steps toward diagnosing and resolving cruise control malfunctions effectively.

How urgent is it to address the malfunctioning cruise control in a 2018 BMW 330i GT xDrive?

When it comes to a malfunctioning cruise control system in your 2018 BMW 330i GT xDrive, the urgency of addressing the issue cannot be overstated. A malfunctioning cruise control can lead to unexpected acceleration or deceleration, creating a significant safety hazard on the road. This unpredictability not only compromises your safety but also that of other drivers. Additionally, cruise control problems can detract from the overall driving experience, making long trips less enjoyable and convenient. Ignoring these symptoms may also result in decreased fuel efficiency, as the system may not operate optimally, leading to increased fuel consumption. Furthermore, neglecting the issue could lead to more severe damage to other vehicle components, resulting in costly repairs down the line. Therefore, it is crucial to diagnose and address any cruise control malfunctions promptly, ensuring both your safety and the longevity of your vehicle. If you're considering a DIY approach, be sure to consult reliable resources and, if necessary, seek professional assistance to ensure the issue is resolved effectively.

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