2020 BMW 740i Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2020 BMW 740i

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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 2020 BMW 740i 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 2020 BMW 740i 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 2020 BMW 740i?

When faced with a non-functioning cruise control in your 2020 BMW 740i, start by checking the cruise control fuse, as a blown fuse can often be the simplest explanation for the malfunction. Next, ensure that the cruise control settings are correctly configured according to your vehicle's manual, as incorrect settings can prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues that may not be immediately visible. Additionally, inspect the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can hinder functionality. Finally, while driving, attempt to engage the cruise control to see if it responds; this practical test can help you determine if the system is operational or if further investigation is needed. By following these steps, you can systematically identify and address the potential causes of your cruise control issues.

What are the common problems that could cause the cruise control to stop working in a 2020 BMW 740i?

When troubleshooting the cruise control system in a 2020 BMW 740i, it's essential to understand the common problems that may lead to its failure. One prevalent issue is a faulty speed sensor, which can disrupt 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 this switch malfunctions, it may not properly signal the cruise control system to disengage when the brake pedal is pressed, leading to operational issues. Another potential culprit is the throttle actuator, which is responsible for controlling the engine's throttle opening; any malfunction here can hinder the cruise control's performance. Electrical problems, such as blown fuses or wiring issues, can also impede the system's functionality, as can software glitches within the vehicle's control module. By identifying and addressing these common problems, DIY enthusiasts can effectively diagnose and potentially resolve cruise control issues in their BMW 740i.

How urgent is it to address the malfunctioning cruise control in a 2020 BMW 740i?

When it comes to a malfunctioning cruise control in a 2020 BMW 740i, the urgency of addressing 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 be indicative of deeper electronic system issues that could compromise other vehicle functions, making it crucial to investigate the root cause promptly. Neglecting these symptoms not only risks your safety but can also result in decreased fuel efficiency and potential long-term damage to the vehicle, leading to more costly repairs down the line. By taking immediate action to diagnose and resolve the cruise control problem, you not only enhance your driving experience but also safeguard your investment in the vehicle. Therefore, if you're considering a DIY approach, it's essential to prioritize this issue and ensure that your BMW operates smoothly and safely.

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