2020 BMW 430i Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2020 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 2020 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 2020 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 steps should I take to diagnose the cruise control issue in my 2020 BMW 430i?

To effectively diagnose the cruise control issue in your 2020 BMW 430i, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable problem that can disrupt the system's functionality. Next, examine the cruise control buttons on your steering wheel to ensure they are operational, as malfunctioning buttons can lead to control issues. If these initial checks do not reveal the problem, utilize an OBD-II scanner to identify any error codes that may indicate specific faults within the cruise control system. Following this, inspect the speed sensors, as faulty sensors can hinder the system's ability to maintain speed. Additionally, verify that the brake and clutch switches are functioning correctly, since defective switches can disable cruise control for safety reasons. Finally, if all else checks out, test the cruise control module itself, as a malfunction here could be the root cause of the issue. By following this structured diagnostic approach, you can efficiently identify and address the cruise control problem in your BMW.

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

When the cruise control in your 2020 BMW 430i 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 speed sensor, which is crucial for the cruise control system to accurately gauge your vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Another frequent issue arises from the brake light switch; if this switch is defective, it may not signal the cruise control system to disengage when the brake pedal is pressed, leading to operational failures. Additionally, a malfunctioning throttle actuator can disrupt the system's ability to maintain a constant speed, as it directly controls the engine's throttle. Electrical problems, such as blown fuses or wiring issues, can also impede the cruise control's functionality, as can vacuum leaks in the engine, which affect the necessary vacuum pressure for the system to operate correctly. By identifying these potential issues, you can take the first steps toward troubleshooting and restoring your cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2020 BMW 430i?

When it comes to a malfunctioning cruise control in a 2020 BMW 430i, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which significantly increases the risk of accidents on the road. This unpredictability not only endangers the driver and passengers but also poses a threat to other road users. Moreover, neglecting this issue can result in higher fuel consumption due to the inability to maintain a consistent speed, ultimately leading to increased costs over time. Timely repairs are essential not only for safety but also for preserving the vehicle's overall functionality and value. By addressing the malfunction promptly, you ensure a smoother driving experience and mitigate the risk of more severe mechanical issues down the line. Therefore, it is crucial to prioritize the repair of your cruise control system to maintain both safety and efficiency in your BMW 430i.

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