BMW 428i XDrive Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your BMW 428i xDrive 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
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25% chance it's the
Control Module
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a BMW 428i 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 BMW 428i 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.

Troubleshooting Cruise Control Issues in a BMW 428i xDrive

When troubleshooting cruise control issues in your BMW 428i xDrive, it's crucial to adopt a methodical diagnostic approach. Begin by checking the simplest potential problems, such as a blown fuse. Locate the fuse box and inspect the cruise control fuse for any signs of damage; replacing a blown fuse can often resolve the issue quickly. Next, assess the condition of your vehicle's battery, as a weak battery can impact the cruise control system's functionality. If these initial checks do not yield results, turn your attention to the speed sensor, which may require cleaning or replacement if it is dirty. Additionally, inspect the wiring for any loose connections or damage that could disrupt the system. Don't overlook the throttle control mechanism, as dirt or damage here can also lead to malfunctions. Finally, examine the mechanical components, including the cruise control actuator, for any visible wear or damage. By following this structured approach, you can effectively identify and address the root cause of your cruise control issues, ensuring a smoother driving experience.

What Could Cause the Cruise Control to Malfunction in a BMW 428i xDrive?

When dealing with cruise control malfunctions in a BMW 428i xDrive, it's crucial to understand the common problems that may arise. One of the primary culprits is a failed control module, which can disrupt the entire system's functionality. Additionally, sensor or switch issues can lead to erratic behavior, making it difficult for the cruise control to maintain speed. Throttle actuation problems, particularly those stemming from a faulty throttle position sensor, can cause the engine to overcompensate with fuel, resulting in black exhaust emissions. Furthermore, wiring issues within the SZL unit or the steering wheel loom can also contribute to cruise control failures, often necessitating replacement. Random malfunctions at lower speeds may indicate wiring harness problems, while inaccuracies in speed readings can stem from issues with the ECM or BUS, affecting communication with the electronic throttle. Recognizing these potential issues is vital for any DIY enthusiast looking to troubleshoot and resolve cruise control problems effectively, ensuring both safety and performance in their BMW 428i xDrive.

Why is the Cruise Control Not Working in a BMW 428i xDrive?

When the cruise control in your BMW 428i xDrive fails to operate, it’s crucial to address the issue without delay. Ignoring symptoms such as warning lights on the dashboard or unusual engine behavior can lead to more significant problems, including safety risks while driving. A malfunctioning cruise control system may indicate underlying issues with the control module, sensors, or switches, which could compromise your vehicle's overall performance. Additionally, throttle actuation problems, such as a faulty throttle position sensor, can not only affect cruise control but also lead to excessive fuel consumption and engine damage, evidenced by black exhaust emissions. Furthermore, a blown fuse related to the cruise control system is a common yet easily overlooked cause of malfunction. By taking immediate action to diagnose and repair these issues, you can ensure a safer driving experience and prevent further damage to your vehicle, making it essential for any DIY enthusiast to prioritize these repairs.

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BMW 428i xDrive Cruise Control Issues & Repair Costs