2021 BMW 750i XDrive Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2021 BMW 750i xDrive

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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 2021 BMW 750i 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 2021 BMW 750i 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 steps should I take to diagnose the cruise control issue in my 2021 BMW 750i xDrive?

To effectively diagnose the cruise control issue in your 2021 BMW 750i xDrive, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse can often be the root cause of malfunction. Next, examine the cruise control buttons on your steering wheel for any signs of damage or debris that could hinder their operation. Utilizing an OBD-II scanner is crucial at this stage; it allows you to retrieve error codes that may indicate specific problems within the cruise control system. Following this, check the speed sensors, as they are integral to the system's functionality. Ensure that all wiring connections related to the cruise control are secure and undamaged, as loose or frayed wires can disrupt communication within the system. Finally, test the cruise control module to confirm it is functioning correctly. If these steps do not resolve the issue, it may be time to consult a professional mechanic or a BMW dealership for a more thorough diagnosis. By following this structured approach, you can efficiently identify and address the cruise control problem in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2021 BMW 750i xDrive?

When troubleshooting the cruise control system in a 2021 BMW 750i xDrive, it's essential to understand the common problems that may lead to its malfunction. One prevalent issue 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, the brake light switch plays a crucial role; if it malfunctions, it can send incorrect signals to the cruise control system, causing it to disengage unexpectedly. Another potential culprit is the throttle actuator, which is responsible for adjusting the throttle position; any issues here can disrupt the cruise control's functionality. Electrical problems, such as blown fuses or wiring issues, can also impede the system's operation, as can software glitches within the vehicle's control module. By identifying and addressing these common issues, you can effectively troubleshoot and potentially restore the cruise control functionality in your BMW.

How urgent is it to address the non-functioning cruise control in a 2021 BMW 750i xDrive?

Addressing a non-functioning cruise control in a 2021 BMW 750i xDrive is crucial for both safety and vehicle performance. When cruise control fails, it not only diminishes the convenience of maintaining a steady speed during long drives but may also signal deeper electronic or sensor issues that could compromise the vehicle's overall functionality. Ignoring this problem can lead to more severe complications, potentially escalating repair costs and affecting other systems within the car. Moreover, a malfunctioning cruise control can detract from the driving experience, particularly on highways where this feature is most beneficial. Therefore, it is essential for DIY enthusiasts to prioritize diagnosing and fixing cruise control issues promptly, ensuring both the safety of the driver and the longevity of the vehicle.

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Troubleshooting 2021 BMW 750i xDrive Cruise Control Issues