BMW 340i GT XDrive Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your BMW 340i GT xDrive and How to Fix Them

Find Repair Location
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 BMW 340i GT xDrive 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 340i GT xDrive 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.

Troubleshooting Cruise Control Issues in a BMW 340i GT xDrive

When faced with cruise control issues in your BMW 340i GT xDrive, a methodical diagnostic approach is crucial for identifying and resolving the problem efficiently. Start by checking the simplest potential causes, such as a blown fuse. Locate the fuse box and inspect the cruise control fuse for any signs of damage; replacing a blown fuse can often restore functionality. Next, assess the condition of your vehicle's battery, as a weak battery can impact the cruise control system's performance. If these initial checks do not resolve the issue, examine the speed sensor for dirt or debris, as a dirty sensor can disrupt the system's operation. Additionally, inspect the wiring connected to the cruise control system for any signs of damage or looseness, as faulty wiring can lead to malfunctions. Finally, take a closer look at the throttle control mechanism; any dirt or damage here can also hinder cruise control functionality. By following this structured approach, you can effectively troubleshoot and potentially fix cruise control issues in your BMW 340i GT xDrive, ensuring a smoother driving experience.

What Are the Common Problems with Cruise Control in a BMW 340i GT xDrive?

When dealing with cruise control issues in a BMW 340i GT xDrive, it's essential to understand the common problems that may arise. One frequent issue is a malfunction of the cruise control system, which can lead to sudden deceleration and pose safety risks. A blown fuse is another common culprit; checking the fuse box for the cruise control fuse and replacing it if necessary can often resolve the problem. Additionally, some drivers may encounter activation errors, such as messages indicating that cruise control cannot be activated, particularly after making coding changes. In such cases, further investigation may be required to identify the root cause. For more complex issues, like those involving the SZL Unit or steering wheel wiring, professional assistance may be needed. Addressing these problems promptly is crucial for maintaining the safety and functionality of your vehicle's cruise control system.

Why is the Cruise Control Not Working in a BMW 340i GT xDrive?

When the cruise control in your BMW 340i GT xDrive is not functioning, it is crucial to address the issue promptly to avoid potential safety risks and further damage to your vehicle. A malfunctioning cruise control system can lead to erratic speed control, increasing the likelihood of accidents, especially on highways where maintaining a steady speed is essential. Common culprits include failed or dirty speed sensors, which are vital for the system's operation, and blown fuses that can completely disable cruise control functionality. Additionally, coding changes or intermittent actuator problems can complicate matters, leading to error messages that may require a system reset. Regular maintenance and immediate attention to these symptoms not only enhance your driving experience but also ensure your safety on the road. Ignoring these issues could result in more significant repairs down the line, making it imperative to diagnose and resolve cruise control problems as soon as they arise.

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.