2018 BMW M6 Gran Coupe Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 BMW M6 Gran Coupe 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 2018 BMW M6 Gran Coupe 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 2018 BMW M6 Gran Coupe 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-functional cruise control in a 2018 BMW M6 Gran Coupe?

When faced with a non-functional cruise control in your 2018 BMW M6 Gran Coupe, start by checking the cruise control fuse, as a blown fuse can often be the simplest explanation for the malfunction. Next, verify that the cruise control settings are correctly configured on your dashboard and steering wheel controls, as incorrect settings can prevent the system from engaging. Utilizing a diagnostic scanner to check for any error codes related to the cruise control system is also crucial, as it can provide insights into underlying issues. Additionally, inspect the cruise control buttons on the steering wheel for any signs of physical damage or wear that could hinder their operation. After these checks, conduct a test drive to see if the cruise control engages and maintains speed properly. Finally, ensure that the vehicle speed sensor is functioning correctly, as it plays a vital role in the cruise control system's performance. By systematically following these steps, you can effectively diagnose and potentially resolve the cruise control issues in your BMW M6 Gran Coupe.

What are the common problems that could cause the cruise control to stop working in a 2018 BMW M6 Gran Coupe?

When troubleshooting the cruise control system in a 2018 BMW M6 Gran Coupe, 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, issues with the brake light switch can disrupt the cruise control's functionality; since the system is designed to disengage when the brake pedal is pressed, a faulty switch may prevent this from happening, leading to unexpected behavior. Another potential issue is a malfunctioning throttle actuator, which is responsible for controlling the engine's throttle opening. If this component fails, the cruise control may struggle to maintain a constant speed. Electrical problems, such as blown fuses or wiring issues, can also hinder the system's performance, as can software glitches within the vehicle's onboard computer. By systematically checking these areas, DIY enthusiasts can effectively diagnose and potentially resolve the cruise control issues in their BMW M6 Gran Coupe.

How urgent is it to address the non-functioning cruise control in a 2018 BMW M6 Gran Coupe?

When it comes to the non-functioning cruise control in a 2018 BMW M6 Gran Coupe, understanding the urgency of the situation is crucial for any DIY enthusiast. While the malfunction may not present an immediate safety hazard like failing brakes or steering, it is still essential to address the issue promptly. A functioning cruise control system not only enhances driving comfort by maintaining a steady speed, thereby reducing fatigue on long journeys, but it also contributes to better fuel efficiency. Ignoring this problem could lead to more significant electronic system malfunctions, which may complicate repairs and affect the overall driving experience. Therefore, even though the urgency may not be as high as with other critical vehicle components, it is advisable to investigate and resolve the cruise control issue sooner rather than later to ensure the vehicle operates at its best and to prevent any potential inconveniences down the road.

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2018 BMW M6 Gran Coupe Cruise Control Issues & Repairs