2020 BMW M5 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 BMW M5 and How to Fix Them

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Reviewed by
Devin Cabugcal
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 M5 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 M5 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 take when the cruise control isn't working on a 2020 BMW M5?

When faced with a malfunctioning cruise control system in your 2020 BMW M5, it's important to approach the diagnosis methodically. Begin by checking the cruise control fuse, as a blown or damaged fuse can often be the simplest explanation for the issue. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent the system from engaging. The vehicle speed sensor is another critical component; verify its functionality since it directly impacts the cruise control's operation. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues that may not be immediately visible. Lastly, don't overlook the possibility of vacuum leaks; inspect the vacuum lines connected to the cruise control system, as any leaks can disrupt its performance. By following these steps, you can effectively narrow down the cause of the cruise control malfunction and take the necessary actions to resolve it.

What are the common problems that could cause the cruise control to stop working in a 2020 BMW M5?

When the cruise control in a 2020 BMW M5 ceases to function, it can be attributed to several common problems that are relatively straightforward to diagnose. One of the primary culprits is a faulty speed sensor, which is essential for the cruise control system to accurately gauge the 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 send the correct signal to disengage the cruise control when the brake pedal is pressed, leading to operational failures. Additionally, a malfunctioning throttle actuator can disrupt the system's ability to maintain speed, as it directly controls the engine's throttle opening. Electrical problems, such as wiring issues or blown fuses, can also impede the cruise control's functionality, making it crucial to inspect the electrical components. Lastly, if the cruise control module itself is faulty, it can prevent the system from working as intended. By understanding these common issues, BMW M5 owners can take the first steps toward troubleshooting and potentially resolving their cruise control problems.

How urgent is it to address the non-functioning cruise control in a 2020 BMW M5?

Addressing the non-functioning cruise control in a 2020 BMW M5 should be considered a priority, even if it may not seem like an immediate safety concern. Cruise control enhances the driving experience by allowing drivers to maintain a consistent speed, which is particularly beneficial during long trips where fatigue can set in. While the absence of this feature does not directly compromise the vehicle's safety, it can lead to increased driver frustration, especially on highways where cruise control is frequently utilized. Moreover, neglecting this issue could potentially mask underlying problems within the vehicle's electronic systems, which may escalate into more significant and costly repairs down the line. Therefore, it is advisable to address the malfunction promptly to ensure a smoother driving experience and to safeguard against future complications.

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