2021 BMW I3s Cruise Control Isn't Working

Fix Cruise Control Issues in Your 2021 BMW i3s for Restored Functionality

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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 2021 BMW i3s 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 2021 BMW i3s 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 non-functioning cruise control in my 2021 BMW i3s?

To effectively diagnose the non-functioning cruise control in your 2021 BMW i3s, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box; a blown fuse is a straightforward fix that can often resolve the issue. Next, examine the cruise control buttons on your steering wheel to ensure they are operational, as malfunctioning buttons can prevent the system from engaging. Following this, verify the speed sensor's functionality, since a faulty sensor can disrupt the cruise control's ability to maintain speed. Additionally, check the brake pedal switch, as this component is designed to disengage the cruise control when the brake is applied; ensure it is not stuck or malfunctioning. If these initial checks do not reveal the problem, utilize a diagnostic scanner to identify any error codes related to the cruise control system, which can provide insights into underlying issues. Should you still be unable to pinpoint the problem, it may be wise to consult a professional mechanic or an authorized BMW service center for a comprehensive evaluation and repair. By following this structured diagnostic approach, you can efficiently identify and address the cause of your cruise control malfunction.

What are the common problems that could cause the cruise control to stop working in a 2021 BMW i3s?

When troubleshooting the cruise control system in a 2021 BMW i3s, 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 crucial role; if it malfunctions, it can send incorrect signals to the cruise control system, causing it to disengage unexpectedly. Another potential culprit is the throttle actuator, which controls the engine's throttle opening; any issues here can hinder the cruise control's performance. Electrical problems, such as faulty wiring or blown fuses, can also affect the system's functionality, leading to a complete failure. Lastly, software glitches within the vehicle's onboard computer may require updates or resets to restore proper operation. By identifying and addressing these common issues, you can effectively troubleshoot and potentially resolve the cruise control problems in your BMW i3s.

How urgent is it to address the malfunctioning cruise control in a 2021 BMW i3s?

Addressing a malfunctioning cruise control in a 2021 BMW i3s is of utmost urgency due to the significant safety risks it poses. When cruise control fails, it can lead to unpredictable speed changes, which may result in dangerous driving conditions, especially on highways where maintaining a consistent speed is crucial. Ignoring these symptoms not only compromises your safety but can also lead to more extensive damage to the vehicle's electronic systems, potentially resulting in costly repairs. Therefore, it is essential to act promptly by consulting a certified BMW technician or an authorized service center to diagnose and rectify the issue. Timely intervention ensures that your vehicle remains safe and reliable, allowing you to enjoy the comfort and convenience that cruise control is designed to provide.

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