2014 BMW I8 Cruise Control Isn't Working

Troubleshooting Common Issues with the Cruise Control System in Your 2014 BMW i8 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 2014 BMW i8 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 2014 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.

What are the common problems that could cause the cruise control to stop working in a 2014 BMW i8?

When the cruise control in a 2014 BMW i8 ceases to function, it can be frustrating, but understanding the common problems can guide you in diagnosing the issue. One frequent culprit is a faulty speed sensor, which is essential for the cruise control system to accurately gauge the vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Another potential issue lies with the brake light switch; if this switch is defective, it may not signal the cruise control system correctly, causing it to disengage unexpectedly. Additionally, problems with the throttle actuator can hinder the system's ability to maintain speed, as this component regulates the engine's throttle opening. Electrical issues, such as blown fuses or wiring problems, can also disrupt the cruise control's operation, as can vacuum leaks in the engine system, which are critical for maintaining the necessary vacuum supply. By systematically checking these components, DIYers can often identify and address the root cause of cruise control failure, restoring functionality without the need for professional assistance.

How urgent is it to address the malfunctioning cruise control in a 2014 BMW i8?

When it comes to addressing a malfunctioning cruise control in a 2014 BMW i8, understanding the urgency of the situation is crucial. While the cruise control system is not essential for the vehicle's basic operation, neglecting its malfunction can lead to significant safety concerns. A faulty system may cause unexpected changes in speed, which can be dangerous, especially in high-traffic situations. Additionally, the convenience of cruise control enhances long drives, allowing for a more comfortable experience by reducing the need for constant speed adjustments. Furthermore, a properly functioning cruise control can contribute to better fuel efficiency by maintaining a steady speed, ultimately saving you money on gas. Lastly, it plays a vital role in reducing driver fatigue during extended journeys, making it easier to stay alert and focused. Therefore, while it may not be an immediate emergency, addressing the issue promptly is advisable to ensure a safe and enjoyable driving experience.

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