2020 BMW 540i XDrive Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2020 BMW 540i xDrive and How to Fix Them

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Reviewed by
Bo Fader
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 540i xDrive 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 540i xDrive 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 540i xDrive?

When faced with a non-functioning cruise control in your 2020 BMW 540i xDrive, start by checking the cruise control fuse in the fuse box to ensure it is intact. A blown fuse can often be the simplest fix. Next, verify that the cruise control system is activated and set to your desired speed, as sometimes the issue may stem from incorrect settings. If these initial checks do not resolve the issue, use a diagnostic scanner to look for any error codes that could indicate a deeper problem within the system. Additionally, inspect the cruise control buttons on the steering wheel for any signs of damage or malfunction, as these can hinder functionality. It’s also crucial to test the brake pedal switch, since a faulty switch can prevent the cruise control from engaging. Lastly, check the vehicle speed sensor to ensure it is accurately sending speed signals to the cruise control system. By systematically following these steps, you can effectively diagnose and potentially fix the cruise control issue in your BMW, saving time and money on professional repairs.

What are the common problems that could cause the cruise control to stop working in a 2020 BMW 540i xDrive?

When troubleshooting cruise control issues in a 2020 BMW 540i xDrive, it's essential to consider several common problems that could be at play. A faulty speed sensor is often the primary culprit, as it plays a crucial role in relaying the vehicle's speed to the cruise control system. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Additionally, the brake light switch can cause significant disruptions; if this switch is defective, it may prevent the cruise control from activating or cause it to disengage unexpectedly when the brake pedal is pressed. Another potential issue lies with the throttle actuator, which controls the engine's throttle opening. If this component is malfunctioning, it can lead to erratic speed control, making it difficult to maintain a constant speed. Electrical problems, such as blown fuses or wiring faults, can also disrupt the cruise control's operation, so checking these components is vital. Lastly, software glitches within the vehicle's control module may lead to cruise control malfunctions, and updating or resetting the software could resolve these issues. By systematically addressing these common problems, you can effectively troubleshoot and restore the functionality of the cruise control system in your BMW.

How urgent is it to address the non-functioning cruise control in a 2020 BMW 540i xDrive?

When it comes to the non-functioning cruise control in your 2020 BMW 540i xDrive, understanding the urgency of the situation is crucial for both safety and vehicle performance. While it may seem like a minor inconvenience, a malfunctioning cruise control system can signal deeper electronic issues that might affect other critical components of your vehicle. For those who frequently embark on long drives, the absence of this feature can lead to increased driver fatigue and a less efficient fuel consumption rate. Moreover, neglecting this problem could escalate into more significant safety risks, particularly during extended highway travel where maintaining a consistent speed is essential. Therefore, it is advisable to conduct a thorough inspection of the cruise control system as soon as possible. If you're considering a DIY approach, start by checking the fuses and connections related to the cruise control system, as these are often the culprits behind such malfunctions. However, for a comprehensive diagnosis and repair, consulting a qualified mechanic or an authorized BMW service center is recommended to ensure that any underlying issues are properly addressed, ultimately safeguarding your driving experience and the longevity of your vehicle.

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