2020 BMW I8 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 BMW i8 and How to Fix Them

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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 2020 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 2020 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 steps should I take to diagnose the cruise control issue in my 2020 BMW i8?

When diagnosing a cruise control issue in your 2020 BMW i8, it's essential to adopt a systematic approach that begins with the simplest solutions before progressing to more complex diagnostics. Start by checking the cruise control settings to ensure the system is activated and set to your desired speed. Next, inspect the cruise control buttons on the steering wheel for any signs of damage or malfunction, as these can often be the source of the problem. If everything appears in order, utilize an OBD-II scanner to identify any error codes that may indicate specific issues within the cruise control system. Additionally, don't overlook the importance of checking the cruise control fuse; a blown fuse can easily disrupt functionality. After these preliminary checks, take your BMW i8 for a test drive to see if the cruise control engages correctly and maintains speed. If the problem persists despite these efforts, it may be time to consult a professional mechanic or an authorized BMW service center, as they possess the specialized knowledge and tools necessary for a thorough diagnosis and repair. By following this structured diagnostic approach, you can effectively identify and address the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2020 BMW i8?

When troubleshooting the cruise control system in a 2020 BMW i8, it's essential to understand the common problems that may lead to its malfunction. 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 critical role; if this switch is malfunctioning, it may inadvertently signal the cruise control to disengage when the brake pedal is not pressed, causing operational issues. Another potential culprit is the throttle actuator, which regulates 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 onboard computer, which may require updates or resets. By identifying and addressing these common problems, DIY enthusiasts can effectively troubleshoot and restore the cruise control system in their BMW i8.

How urgent is it to address the malfunctioning cruise control in my 2020 BMW i8?

Addressing the malfunctioning cruise control in your 2020 BMW i8 is of utmost importance due to the potential safety risks it poses. A faulty cruise control system can lead to unexpected acceleration or deceleration, increasing the likelihood of accidents and creating unsafe driving conditions. Moreover, neglecting this issue can result in more extensive damage to your vehicle's electronic systems, leading to costly repairs down the line. Beyond safety and financial implications, a properly functioning cruise control enhances your driving experience by providing comfort and efficiency on long journeys. Therefore, it is crucial to prioritize the repair of your cruise control system to ensure your safety, protect your investment, and enjoy the full benefits of your BMW i8.

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