2020 BMW 430i Gran Coupe Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2020 BMW 430i Gran Coupe

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Reviewed by
Andrew Hajjar
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 BMW 430i Gran Coupe 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 BMW 430i Gran Coupe 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 2020 BMW 430i Gran Coupe?

To diagnose the cruise control issue in your 2020 BMW 430i Gran Coupe, begin with the simplest checks to avoid unnecessary complications. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common culprit for malfunction. Next, examine the cruise control buttons on your steering wheel to ensure they are functioning correctly, as faulty buttons can disrupt the system's operation. 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. Following this, inspect the speed sensors, as any faults here can prevent the cruise control from maintaining speed. Additionally, check for loose or damaged wiring connections related to the cruise control system, as poor connections can lead to functionality issues. If all else fails, consider testing the cruise control module itself, as a malfunctioning module may require replacement to restore proper functionality. By systematically following these steps, you can effectively diagnose and address the cruise control issue in your BMW, ensuring a smoother driving experience.

What are the common problems that could cause the cruise control to stop working in a 2020 BMW 430i Gran Coupe?

When the cruise control in your 2020 BMW 430i Gran Coupe ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a faulty speed sensor, which is crucial for the cruise control system to maintain the desired speed. If the speed sensor is malfunctioning, it may not relay accurate information to the system. Another potential issue is the brake light switch; if this switch is defective, it can inadvertently signal the cruise control to disengage whenever the brakes are applied, disrupting its operation. Additionally, problems with the throttle actuator can hinder the system's ability to adjust speed effectively, leading to erratic behavior. Electrical issues, such as blown fuses or damaged wiring, can also interfere with the cruise control functionality, making it essential to check the vehicle's electrical system. Lastly, software glitches within the vehicle's computer system can cause unexpected malfunctions, so ensuring that your software is up to date is also a good practice. By identifying these common problems, you can take the first steps toward troubleshooting and potentially resolving the cruise control issues in your BMW.

How urgent is it to address the non-functioning cruise control in a 2020 BMW 430i Gran Coupe?

When it comes to a non-functioning cruise control in your 2020 BMW 430i Gran Coupe, addressing the issue promptly is crucial for both safety and vehicle performance. While it may not seem like an immediate emergency, the malfunction could signal deeper electronic system problems that might affect other critical functions of your car. Ignoring this issue could lead to increased driver fatigue during long trips, as you lose the convenience of maintaining a steady speed, which is essential for comfort and fuel efficiency. Moreover, a faulty cruise control system may indicate a larger underlying problem that could compromise your vehicle's safety and drivability. Delaying repairs not only risks further complications but could also create hazardous driving conditions, especially on highways where cruise control is frequently utilized. Therefore, it is advisable to diagnose and repair the cruise control system as soon as possible to ensure your BMW operates safely and efficiently.

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