2018 BMW 430i Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2018 BMW 430i

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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 2018 BMW 430i 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 430i 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 2018 BMW 430i?

When troubleshooting the non-functioning cruise control in a 2018 BMW 430i, start with the simplest solutions to avoid unnecessary complications. Begin by checking the cruise control fuse in the fuse box; a blown fuse can easily disrupt the system's functionality. Next, ensure that the cruise control settings on your dashboard are correctly configured, as incorrect settings can prevent engagement. If these initial checks do not resolve the issue, use a diagnostic scanner to look for any error codes that may indicate deeper problems within the system. Additionally, inspect the cruise control buttons on the steering wheel for any signs of damage or malfunction, as stuck or broken buttons can hinder operation. Finally, while driving, attempt to engage the cruise control to see if it responds; this practical test can help identify whether the issue lies in the activation process itself. By following these steps, you can systematically diagnose and potentially resolve the cruise control issue in your BMW.

What are the common problems that could cause the cruise control to stop working in a 2018 BMW 430i?

When troubleshooting the cruise control system in a 2018 BMW 430i, it's essential to consider several common issues that may be at play. One of the primary culprits could be a faulty speed sensor, which is crucial for the system to accurately gauge the vehicle's speed. If this sensor is malfunctioning, the cruise control may fail to engage or maintain the desired speed. Additionally, the brake light switch is another critical component; if it is defective, it can prevent the cruise control from functioning properly since the system is designed to disengage when the brake pedal is pressed. Another area to inspect is the throttle actuator, as any malfunction here can hinder the system's ability to maintain speed effectively. Furthermore, a defective cruise control module can disrupt communication between various system components, leading to operational issues. Lastly, don't overlook potential electrical problems, such as wiring issues or blown fuses, which can also impede the cruise control's functionality. By systematically checking these components, DIYers can identify and address the root cause of the cruise control failure in their BMW.

How urgent is it to address the malfunctioning cruise control in a 2018 BMW 430i?

Addressing a malfunctioning cruise control in a 2018 BMW 430i is of utmost urgency due to the significant safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can be dangerous while driving. Moreover, issues with cruise control may signal deeper electronic system or sensor problems that could compromise the vehicle's overall performance. Ignoring these symptoms not only risks safety but can also lead to decreased fuel efficiency and potential damage to other vehicle components, resulting in more costly repairs down the line. Therefore, it is crucial to diagnose and repair cruise control malfunctions promptly, ensuring both the safety of the driver and passengers and the longevity of the vehicle.

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