2015 BMW 435i Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2015 BMW 435i 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 2015 BMW 435i 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 435i 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 non-functioning cruise control in a 2015 BMW 435i?

To effectively diagnose the non-functioning cruise control in your 2015 BMW 435i, start by reading the fault codes using an OBD-II scanner, as this will provide valuable insights into any underlying issues. Pay close attention to any cruise control malfunction messages displayed on your dashboard, as these indicate that the system has detected a problem. Next, attempt to activate the cruise control by pressing the button on the steering wheel; if the system indicates readiness but fails to set a speed, this points to a malfunction. A common culprit for such issues is a blown fuse, so inspect the relevant fuses and replace any that are damaged. If the problem persists, check the ABS control module and wheel speed sensors for faults, as these components are crucial for cruise control functionality. Additionally, inspect the wiring harness for any signs of wear or damage, as intermittent failures can often be traced back to electrical issues. Finally, take your vehicle for a test drive on the freeway to see if the cruise control operates correctly, which will help confirm whether the problem has been resolved or if further investigation is needed. By following this structured approach, you can systematically identify and address the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2015 BMW 435i?

When troubleshooting cruise control issues in a 2015 BMW 435i, it's essential to consider several common problems that may be at play. A blown fuse is often the first suspect, as it can easily disrupt the electrical flow necessary for the cruise control system to function. Additionally, a defective brake pedal switch can prevent the system from engaging, as it signals when the brakes are applied. Another potential culprit is the throttle control system; if there are any malfunctions here, they can directly affect cruise control performance. Furthermore, issues with the Anti-lock Braking System (ABS) can also interfere with cruise control functionality, as these systems are interconnected. Lastly, while less common in modern vehicles, a broken vacuum line could still be a factor in older cruise control systems. By systematically checking these components, DIY enthusiasts can effectively diagnose and potentially resolve cruise control problems in their BMW 435i.

How urgent is it to address the non-functioning cruise control in a 2015 BMW 435i?

Addressing a non-functioning cruise control in your 2015 BMW 435i is more urgent than it may initially seem. While it might not pose an immediate safety risk, ignoring the issue can lead to a decline in your vehicle's overall performance and driving experience. A malfunctioning cruise control can affect acceleration, making it harder to maintain a steady speed, which can be particularly frustrating during long road trips. Additionally, the longer you wait to diagnose and fix the problem, the more likely it is that underlying issues could escalate, potentially leading to more significant repairs down the line. By taking prompt action, you not only restore the convenience of cruise control but also ensure a safer and more enjoyable driving experience. Therefore, if you notice any signs of malfunction, it’s advisable to investigate the root cause sooner rather than later.

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2015 BMW 435i Cruise Control Not Working: Causes & Repairs