2020 BMW M4 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 BMW M4 and How to Fix Them

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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 M4 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 M4 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 2020 BMW M4?

When troubleshooting the non-functioning cruise control in your 2020 BMW M4, start with the simplest solutions to save time and effort. Begin by checking the cruise control fuse; a blown or damaged fuse can easily disrupt the system's functionality. Next, ensure that the cruise control settings are correctly configured in your vehicle's settings menu, as incorrect settings can prevent activation. If these initial checks do not resolve the issue, use a diagnostic tool to scan for any error codes that may indicate underlying problems with the cruise control system. Additionally, inspect the cruise control buttons on the steering wheel to confirm they are not stuck or malfunctioning, as this can hinder engagement. Finally, test the cruise control at various speeds to determine if it activates and maintains speed as expected. By following this structured approach, you can effectively diagnose and potentially resolve the cruise control issues in your BMW M4.

What are the common problems that could cause the cruise control to stop working in a 2020 BMW M4?

When dealing with cruise control issues in a 2020 BMW M4, it's important to understand the common problems that may be at play. One frequent culprit is a faulty speed sensor, which can hinder the system's ability to accurately gauge the vehicle's speed, preventing it from engaging or maintaining the desired speed. Additionally, brake light switch malfunctions can lead to unexpected disengagement of the cruise control when the brake pedal is pressed, even if the driver hasn't manually turned it off. Another potential issue is a malfunctioning throttle actuator, which disrupts communication between the cruise control system and the engine, resulting in improper functionality. Electrical problems, such as blown fuses or wiring issues, can also impede the cruise control system's operation. Lastly, software glitches within the vehicle's onboard computer may cause erratic behavior or complete failure of the cruise control. To ensure safe and effective operation, it's advisable to have these issues diagnosed and repaired by a qualified mechanic or authorized BMW service center.

How urgent is it to address the malfunctioning cruise control in a 2020 BMW M4?

When it comes to a malfunctioning cruise control in your 2020 BMW M4, the urgency to address the issue cannot be overstated. Cruise control is designed to enhance your driving experience by maintaining a steady speed, which is particularly beneficial during long trips. However, if this system fails, it can lead to unexpected acceleration or deceleration, creating a hazardous situation on the road. Ignoring these symptoms not only compromises your comfort but also poses significant safety risks to you, your passengers, and other drivers. The potential for accidents increases dramatically if the cruise control system is not functioning correctly. Therefore, it is crucial to act swiftly. While some DIY enthusiasts may feel confident in troubleshooting minor issues, it is advisable to consult a certified BMW technician or an authorized service center for a thorough diagnosis and repair. Taking prompt action ensures not only your safety but also the optimal performance of your vehicle, allowing you to enjoy the driving experience without worry.

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