2020 BMW Z4 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 BMW Z4 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
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 Z4 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 Z4 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 Z4?

When troubleshooting the non-functioning cruise control in your 2020 BMW Z4, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, as malfunctioning buttons can prevent engagement. Following this, verify the speed sensors, which play a crucial role in the cruise control system; faulty sensors can disrupt functionality. Utilizing a diagnostic scanner to check for error codes can provide insights into specific problems affecting the system. Additionally, examine the brake and clutch switches, as these components must function correctly for the cruise control to activate. Finally, inspect the wiring and connections associated with the cruise control system for any signs of damage or corrosion, as these issues can lead to connectivity problems. By following these steps, you can effectively diagnose and potentially resolve the cruise control issue in your BMW Z4.

What are the common problems that could cause the cruise control to stop working in a 2020 BMW Z4?

When the cruise control in your 2020 BMW Z4 ceases to function, it can be frustrating, but understanding the common problems can help you troubleshoot the issue. One frequent culprit is a faulty speed sensor, which is essential for the cruise control system to accurately gauge your vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Another common issue is related to the brake light switch; if this switch is defective, it can send incorrect signals to the cruise control system, disrupting its operation. Additionally, a malfunctioning throttle actuator can hinder the system's ability to control the engine's throttle, further complicating speed maintenance. In some cases, the cruise control module itself may be at fault, requiring replacement if it is defective. Lastly, electrical problems such as wiring issues or blown fuses can also prevent the cruise control from functioning properly. By identifying these potential problems, you can take the first steps toward diagnosing and possibly fixing the cruise control system in your BMW Z4.

How urgent is it to address the malfunctioning cruise control in a 2020 BMW Z4?

When dealing with a malfunctioning cruise control in a 2020 BMW Z4, it is crucial to recognize the urgency of the situation. While it may not seem like an immediate emergency, neglecting this issue can lead to significant safety risks on the road, potentially resulting in accidents or loss of vehicle control. Furthermore, a malfunctioning cruise control system can detract from the overall driving experience, diminishing comfort and convenience during long journeys. Additionally, this problem may signal deeper issues within the vehicle's electronics or sensors, which could compromise overall performance if left unaddressed. If your BMW Z4 is still under warranty, prompt action is essential to ensure that any necessary repairs are covered, preventing out-of-pocket expenses. Ignoring the symptoms of a malfunctioning cruise control could also lead to further damage to other vehicle components, resulting in costly repairs down the line. Therefore, it is advisable to address any cruise control issues as soon as they arise to maintain safety, comfort, and the integrity of your vehicle.

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2020 BMW Z4 Cruise Control Issues & Repair Guide | RepairPal