BMW 535i GT Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your BMW 535i GT 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a BMW 535i GT 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 535i GT 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 535i GT

When troubleshooting cruise control issues in your BMW 535i GT, it's essential to adopt a methodical diagnostic approach. Begin by checking the vehicle's fuse box for any blown fuses, particularly the one associated with the cruise control system, as this is a straightforward fix that can often resolve the problem. If the fuses are intact, inspect the battery and wiring for any signs of damage or corrosion, as these can disrupt the electrical flow necessary for cruise control functionality. Next, examine the speed sensor for dirt or malfunction, as a dirty sensor can lead to inaccurate readings and system failures. If these initial checks do not yield results, consider the condition of the throttle control and the cruise control actuator, as issues such as broken gears or throttle actuation problems can prevent proper engagement. Lastly, if the system shuts down unexpectedly while driving, a simple restart of the vehicle may reset the system and restore functionality. By following this structured approach, you can effectively diagnose and potentially resolve cruise control issues in your BMW 535i GT without the need for professional assistance.

What Could Cause the Cruise Control to Malfunction in a BMW 535i GT?

When diagnosing cruise control malfunctions in a BMW 535i GT, it's essential to consider several common problems that could be affecting the system. One of the primary culprits is a failed control module, which can disrupt the entire cruise control functionality. Additionally, sensor issues, particularly with speed sensors, can lead to communication failures between the vehicle's computer and the cruise control system, resulting in erratic behavior or complete failure. Throttle actuation problems, often linked to a malfunctioning throttle position sensor, can also contribute to cruise control issues, potentially causing the engine to overcompensate and emit black exhaust. While these problems may not seem urgent if the cruise control is not in use, they can pose significant safety risks if they occur while driving. For those looking to tackle these issues themselves, inspecting the control module, cleaning or replacing sensors, and checking the throttle position sensor are good starting points before considering a professional diagnosis.

Why is the Cruise Control Not Working in a BMW 535i GT?

When the cruise control in your BMW 535i GT is not functioning, it is crucial to understand the urgency of the situation. Ignoring symptoms such as unresponsive controls or erratic behavior can lead to dangerous driving conditions, particularly if the malfunction occurs while you are relying on the system for speed regulation. Common issues, such as failed control modules, faulty sensors, or throttle actuation problems, can compromise the effectiveness of your cruise control, making it essential to diagnose and address these problems swiftly. While some minor issues may be resolved with simple fixes, many will require professional attention to prevent further complications or damage. Prioritizing the repair of your cruise control system not only enhances your driving experience but also ensures your safety on the road.

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