2008 BMW 328xi Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2008 BMW 328xi and How to Fix Them

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Reviewed by
Aisha
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 2008 BMW 328xi 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 2008 BMW 328xi 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 cruise control issue in a 2008 BMW 328xi?

To effectively diagnose the cruise control issue in your 2008 BMW 328xi, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse located in the fuse box; a blown fuse is a common and easily fixable problem. If the fuse is intact, proceed to examine the control module, sensor, and switch, as failures in these components are frequent culprits behind cruise control malfunctions. Next, check the throttle actuation, ensuring that the throttle position sensor is functioning properly, since any failure here can lead to performance issues, including fuel overcompensation. If you suspect throttle or sensor failures, conduct a thorough diagnosis of these parts to pinpoint any faults. While DIY fixes can be tempting, ensure you have the necessary skills and confidence before attempting repairs, as the cruise control system is integral to vehicle safety and performance. By following this structured diagnostic approach, you can identify the root cause of the issue and take appropriate steps to restore your cruise control functionality.

How urgent is it to address the non-functioning cruise control in my 2008 BMW 328xi?

Addressing the non-functioning cruise control in your 2008 BMW 328xi should be considered a priority, even if it may not seem like an immediate emergency. The convenience of cruise control significantly enhances driving comfort, especially on long journeys, by allowing you to maintain a steady speed without constant pedal pressure. When this feature fails, it can lead to increased driver fatigue, as you are required to manually control the vehicle's speed at all times. Moreover, the malfunction could stem from various underlying issues, such as a blown fuse, faulty brake switch, or wiring problems, which may also impact other critical systems in your car. Ignoring these symptoms not only compromises your driving experience but could also escalate into more serious mechanical problems, potentially leading to costly repairs down the line. Therefore, it is advisable to have your vehicle inspected by a qualified mechanic at your earliest convenience to diagnose the specific issue and ensure both your safety and the longevity of your BMW.

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