BMW 335xi Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your BMW 335xi and How to Fix Them

Find Repair Location
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 BMW 335xi 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 335xi 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.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

Troubleshooting Cruise Control Issues in a BMW 335xi

When troubleshooting cruise control issues in your BMW 335xi, it's essential to adopt a systematic diagnostic approach. Begin by checking the control module, throttle, and associated sensors, as these are often the primary sources of malfunction. Next, inspect the fuse related to the cruise control system; a blown fuse can easily disrupt functionality and is a straightforward fix. If these initial checks do not resolve the issue, consider examining the brake pedal switch, as a malfunctioning switch can prevent the cruise control from engaging. Additionally, inspect the wiring harness for any signs of wear or damage, as this can also lead to problems. If you've gone through these steps and the cruise control is still not functioning, it may be time to consult with a professional BMW technician who can provide a more in-depth diagnosis and recommend necessary repairs. By following this methodical approach, you can effectively identify and address the root causes of cruise control issues in your BMW 335xi.

What Are the Common Problems Causing Cruise Control Issues in a BMW 335xi?

When diagnosing cruise control issues in a BMW 335xi, it's crucial to recognize the various factors that can contribute to system malfunctions. One of the first indicators of a problem is often a warning light on the dashboard, signaling that the cruise control system has detected an unsafe condition. Common culprits behind these malfunctions include the Control Module, which manages the cruise control functions, and various sensors that monitor vehicle speed and throttle position. Additionally, issues with the throttle itself can prevent the cruise control from engaging or maintaining speed. For DIY enthusiasts, understanding these potential failure modes is essential for effective troubleshooting. By systematically checking these components, you can identify the root cause of the problem and take the necessary steps to restore your cruise control system to proper working order, ensuring a safer and more enjoyable driving experience.

Why is the Cruise Control Not Working in a BMW 335xi?

When your BMW 335xi's cruise control fails, it’s essential to act promptly, as neglecting the issue can lead to safety risks and potentially more significant vehicle damage. Common culprits include failed or dirty speed sensors, which are vital for the cruise control system's communication with the car's computer. Additionally, a blown fuse or a malfunctioning brake pedal switch can disrupt the system's operation. If your vehicle is older, consider checking for broken vacuum lines, as these can also affect cruise control functionality. Addressing these issues not only restores your cruise control but also ensures your vehicle operates safely and efficiently on the road. Taking the time to diagnose and fix these problems can save you from more costly repairs down the line.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

BMW 335xi Cruise Control Issues: Common Causes & Repairs