2008 BMW Z4 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2008 BMW Z4 and How to Fix Them

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Reviewed by

Andrew Hajjar

Written by RepairPal Car Genius

Updated January 14, 2025

30% chance it's the

Sensor

25% chance it's the

Control Module

25% chance it's the

Throttle

20% chance it's

Something else

The most common reasons a 2008 BMW Z4 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.

What are the best BMW repair shops?

RepairPal Certified shops can diagnose and repair your 2008 BMW Z4 electronics and electrical issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

How much does it cost to fix a 2008 BMW Z4 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 common problems that could cause the cruise control to stop working in a 2008 BMW Z4?

When the cruise control in your 2008 BMW Z4 ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is the brake or clutch pedal switch, which can fail and prevent the cruise control from engaging. Additionally, wiring issues, particularly short circuits like those caused by the third brake light wire near the trunk hinge, can disrupt the system's operation. It's also essential to check the fuses related to the cruise control; a blown fuse can completely disable the system. Lastly, malfunctions within the steering column can lead to difficulties in controlling the cruise control, making it crucial to inspect this area as well. By systematically checking these components, you can identify and potentially resolve the issue, restoring your cruise control functionality.

How urgent is it to address the malfunctioning cruise control in a 2008 BMW Z4?

When dealing with a malfunctioning cruise control in a 2008 BMW Z4, it's essential to assess the urgency of the situation. While many cruise control issues stem from non-critical components like sensors or fuses, neglecting these symptoms can lead to more significant problems down the line. For instance, a warning light on the dashboard may indicate a malfunction that, if left unaddressed, could affect the vehicle's overall performance. Although the immediate safety risks are low, particularly if the malfunction is not linked to critical systems like the brakes or throttle, restoring the functionality of your cruise control is vital for enhancing your driving experience. Regularly checking for blown fuses and ensuring that the system is properly calibrated can prevent minor issues from escalating into costly repairs. Therefore, while it may not be an emergency, addressing cruise control malfunctions promptly is advisable to maintain the convenience and reliability of your vehicle.

Related 2008 BMW Z4 Problems

Read about related problems experienced by other BMW Z4 drivers like you.

BMW Z4 DSC Control Module and Hydraulic Pump replacement required due to illuminated DSC, ABS, and Brake lights

Some BMW Z4 owners report experiencing illuminated DSC, ABS, and brake lights, which often indicate a failing DSC control module and hydraulic pump. These symptoms are common and typically require the replacement of the DSC unit, with costs estimated around $3354 after discounts. Many users have found that replacing the DSC control module and hydraulic pump is the only effective solution to resolve the issue. Prompt attention to these warning lights is crucial to maintain the proper functioning of essential safety systems like DSC and ABS. When undertaking the replacement, owners must ensure they have the correct part numbers for their specific model, such as 34526778492 or 34526769164 for 2006 and newer Z4s. Additionally, some owners report encountering anomalies during the replacement process, including solid yellow lights on the instrument cluster and the need for software for brake bleed procedures and calibration of the steering wheel sensor and DSC/ABS unit. It is advisable to consult a qualified mechanic or BMW dealership for accurate diagnosis and repair of these issues.

1 model year affected

Avg Mileage: 145,916

10 others reported problem

4 comments

Front Control Arm Bracket Bushings May Fail

Failure of the front control arm bracket bushings — often referred to as thrust rod bushings — is moderately common. One symptom is a clunk or jolt felt in the steering when braking.

6 model years affected

See More 2008 BMW Z4 Problems

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