BMW M4 Cruise Control Isn't Working

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

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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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 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 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.

Troubleshooting Cruise Control Issues in a BMW M4

When troubleshooting cruise control issues in a BMW M4, it's essential to adopt a systematic diagnostic approach that begins with the simplest potential fixes. Start by checking the cruise control fuse located in the vehicle's fuse box, as a blown fuse is a common and easily rectifiable issue. If the fuse is intact, inspect the control module and associated sensors for any signs of malfunction. Pay close attention to the cruise control switch, as it may be faulty or stuck, preventing proper operation. Additionally, mechanical issues such as a stuck clutch actuator can disrupt the system; if you suspect this, you may need to energize the system to see if it resolves the problem. Always prioritize safety by addressing these issues promptly, as a malfunctioning cruise control system can pose significant risks while driving. If these DIY methods do not yield results, seeking assistance from a local BMW dealership for a thorough diagnosis and repair is advisable.

What Could Cause Cruise Control Malfunctions in a BMW M4?

When troubleshooting cruise control malfunctions in a BMW M4, it's essential to understand the common problems that may arise within the system. A failed control module, sensor, or switch is often at the heart of the issue, as these components are critical for the cruise control's operation. Additionally, throttle actuation problems, particularly with the throttle position sensor, can lead to erratic engine behavior, such as excessive fuel delivery and black exhaust emissions. Dirty or malfunctioning speed sensors can disrupt the communication between the vehicle's computer and the cruise control system, further complicating the issue. It's also important to consider the breaker pedal switch, which may fail to engage properly, especially when driving over bumps. Wiring issues, including damaged throttle control connections or dirty speed sensors, can contribute to intermittent failures, where the cruise control may stop working unexpectedly. Lastly, specific component failures, such as a faulty cruise control actuator or issues with the steering wheel module, can also lead to malfunctions. By identifying these common problems, DIY enthusiasts can better diagnose and address the underlying causes of cruise control issues in their BMW M4.

Why is the Cruise Control Not Working in a BMW M4?

When the cruise control in your BMW M4 malfunctions, it’s crucial to address the issue promptly to avoid potential safety hazards. Common culprits such as failed control modules, faulty sensors, or malfunctioning switches can lead to erratic behavior of the cruise control system, which may distract you while driving. Additionally, problems with throttle actuation or speed sensors can exacerbate the situation, potentially causing the engine to behave unpredictably. Ignoring these symptoms not only compromises your safety but can also lead to more significant mechanical issues, resulting in costly repairs down the line. Therefore, if you notice any irregularities with your cruise control, it’s advisable to consult a professional or visit a BMW dealership to diagnose and rectify the problem before it escalates. Prioritizing these repairs ensures a safer driving experience and maintains the integrity of your vehicle.

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