2015 BMW Z4 Cruise Control Isn't Working

Troubleshooting Common Issues with the Cruise Control System in Your 2015 BMW Z4 and How to Fix Them

Find Repair Location
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 2015 BMW Z4 cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
  • Control Module: A faulty control module can result in 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 acceleration and poor engine 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 2015 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 steps to diagnose the cruise control issue in a 2015 BMW Z4?

To effectively diagnose a cruise control issue in a 2015 BMW Z4, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the fuse associated with the cruise control system, as a blown fuse is a common culprit for malfunctions. If the fuse is intact, assess the battery's condition, since weak batteries can impact electronic systems, including cruise control. Next, examine the speed sensor for any dirt or damage, as a malfunctioning sensor can disrupt the system's operation. Following this, inspect the wiring connected to the cruise control for any signs of wear or loose connections that could hinder functionality. Lastly, check the throttle control mechanism for cleanliness and damage, as issues here can also lead to cruise control failures. By following this diagnostic approach, you can identify and potentially resolve the underlying issues affecting your vehicle's cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2015 BMW Z4?

When your 2015 BMW Z4's cruise control stops functioning, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the first things to check is the fuse associated with the cruise control system; a blown fuse is a frequent culprit that can easily be replaced. If the fuse is intact, the next step is to inspect the brake pedal switch, as a defective switch can prevent the cruise control from engaging. Additionally, issues with the throttle control system may hinder the cruise control's ability to maintain speed, so examining this system is crucial. Don't overlook the Anti-lock Braking System (ABS), as faults here can also disrupt cruise control functionality. Lastly, while less common in newer models, if your Z4 has any vacuum lines, ensure they are intact, as breaks or leaks can affect the cruise control's operation. By systematically checking these components, you can identify and resolve the issue, restoring your cruise control to working order.

How urgent is it to address the malfunctioning cruise control in a 2015 BMW Z4?

Addressing a malfunctioning cruise control in your 2015 BMW Z4 should not be taken lightly, as neglecting this issue can lead to significant safety risks and potential damage to your vehicle. The cruise control system is designed to enhance driving comfort and efficiency, but when it malfunctions, it can compromise your ability to maintain safe speeds, especially on highways. Warning lights on the dashboard are often the first indication of a problem, signaling that immediate attention is required. Common culprits such as blown fuses, faulty brake switches, or issues with the speed sensor can escalate if not addressed promptly, potentially leading to more complex repairs and increased costs. Moreover, a malfunctioning cruise control can distract you from the road, increasing the risk of accidents. Therefore, it is crucial to diagnose and resolve any issues as soon as they arise to ensure the safe and efficient operation of your vehicle's cruise control system.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.