2017 BMW 640i Gran Coupe Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2017 BMW 640i Gran Coupe

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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 2017 BMW 640i 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 2017 BMW 640i 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-functioning cruise control in a 2017 BMW 640i Gran Coupe?

When troubleshooting the non-functioning cruise control in a 2017 BMW 640i Gran Coupe, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse, as a blown or damaged fuse can easily disrupt the system's functionality. Next, inspect the cruise control switch located on the steering wheel to ensure it is operational; a faulty switch can prevent the system from engaging. Following this, verify the vehicle speed sensor, which is critical for cruise control operation, as it relays speed information to the system. Additionally, examine the brake pedal switch, ensuring it is not stuck or malfunctioning, since the cruise control is designed to disengage when the brakes are applied. Finally, if the previous steps do not reveal the issue, scanning the vehicle's onboard computer for error codes can provide insights into any underlying problems affecting the cruise control system. By methodically following these steps, you can effectively diagnose and potentially resolve the cruise control issue in your BMW.

What are the common problems that could cause the cruise control to stop working in a 2017 BMW 640i Gran Coupe?

When troubleshooting the cruise control system in a 2017 BMW 640i Gran Coupe, it's essential to consider several common problems that may be at play. One of the primary culprits could be a faulty speed sensor, which is crucial for the system to accurately gauge the vehicle's speed. If this sensor malfunctions, the cruise control may fail to engage or maintain the desired speed. Additionally, issues with the brake light switch can lead to unexpected disengagement of the cruise control when the brake pedal is pressed, making it vital to check this component. Another potential issue is a malfunctioning throttle actuator, which can disrupt communication between the cruise control system and the engine, preventing proper functionality. Furthermore, a defective cruise control module may hinder the system from receiving necessary operational signals. Lastly, don't overlook electrical problems such as wiring issues or blown fuses, as these can significantly impact the cruise control's performance. By systematically examining these areas, DIY enthusiasts can identify and potentially resolve the issues affecting their cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2017 BMW 640i Gran Coupe?

When it comes to a malfunctioning cruise control in a 2017 BMW 640i Gran Coupe, the urgency to address the issue cannot be overstated. A faulty cruise control system can lead to unexpected acceleration or deceleration, creating a significant safety hazard on the road. Moreover, such malfunctions may signal deeper issues within the vehicle's electronic systems or sensors, which could compromise overall drivability and performance. Ignoring these symptoms not only risks your safety but can also result in decreased fuel efficiency and potential damage to other critical components of the vehicle. By promptly diagnosing and repairing the cruise control system, you can prevent further complications and potentially save on costly repairs down the line. Therefore, if you notice any irregularities with your cruise control, it is crucial to take action quickly, whether that means consulting a professional mechanic or attempting a DIY fix, to ensure the reliability and safety of your vehicle.

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2017 BMW 640i Gran Coupe Cruise Control Issues & Repairs