BMW I8 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your BMW i8 and How to Fix Them

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Reviewed by
Andrew Hajjar
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 BMW i8 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 BMW i8 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.

Troubleshooting Cruise Control Issues in a BMW i8

When troubleshooting cruise control issues in your BMW i8, it's essential to adopt a systematic diagnostic approach. Start by checking the simplest potential causes, such as inspecting the cruise control fuse located in the vehicle's fuse box. A blown fuse is a common culprit and can be easily replaced. Next, assess the battery's condition, as a weak battery can hinder the cruise control system's functionality. If these initial checks do not resolve the issue, turn your attention to the speed sensor; a dirty or malfunctioning sensor can disrupt the system's operation, so cleaning or replacing it may be necessary. Additionally, examine the wiring connected to the cruise control system for any signs of damage or loose connections, as these can also lead to malfunctions. Finally, inspect the throttle control for dirt or damage, as its proper functioning is crucial for maintaining speed. By following this structured approach, you can effectively diagnose and potentially fix cruise control issues in your BMW i8, enhancing your DIY troubleshooting skills.

What Could Cause Cruise Control Malfunctions in a BMW i8?

When dealing with cruise control malfunctions in a BMW i8, it's crucial to understand the various common problems that could be affecting the system. One of the primary culprits is the speed sensors, which can become dirty or fail, leading to inaccurate readings and subsequent cruise control issues. Additionally, the cruise control actuator may experience intermittent problems, often due to bad solder joints that can fail under specific conditions, such as high engine temperatures. Another area to inspect is the Steering Column Switch Cluster; if this component is malfunctioning, it may trigger a Cruise Control Malfunction message, indicating that it needs replacement. Other potential issues include blown fuses, battery problems, and wiring faults, all of which can disrupt the cruise control functionality. Lastly, ensure that the throttle control is clean and undamaged, as any debris or wear can also contribute to the malfunction. By systematically diagnosing these areas, DIY enthusiasts can effectively pinpoint the cause of the cruise control issues and take appropriate corrective actions.

Why is the Cruise Control Not Working in a BMW i8?

When the cruise control in your BMW i8 is not functioning, it’s crucial to act promptly, as neglecting the problem can lead to safety risks and potentially more significant vehicle damage. A blown fuse is often the first culprit to check, as it can easily disrupt the cruise control system. Additionally, if you notice a warning light on your dashboard, it’s a clear indication that the vehicle has detected an issue that requires immediate attention. Other components, such as the cruise control module, sensors, throttle, or brake pedal switch, may also be at fault, and their failure can compromise the system's operation. Furthermore, issues like a faulty brake light or brake switch, along with engine-related problems, can contribute to the malfunction. Addressing these symptoms systematically not only helps restore your cruise control functionality but also ensures your safety on the road. Therefore, it’s advisable to diagnose and resolve these issues as soon as they arise.

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