2015 BMW 740i Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2015 BMW 740i and How to Fix Them

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Reviewed by

Devin Cabugcal

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 2015 BMW 740i 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 2015 BMW 740i 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 2015 BMW 740i 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.

How urgent is it to address the non-functioning cruise control in a 2015 BMW 740i?

Addressing the non-functioning cruise control in a 2015 BMW 740i is a matter of urgency that should not be overlooked. A malfunctioning cruise control system can signal deeper issues within the vehicle's electronic systems, potentially leading to more significant problems if left unaddressed. For instance, the failure of cruise control can affect the vehicle's acceleration and speedometer accuracy, which are critical for safe driving. Moreover, the frustration of dealing with a non-functional cruise control can detract from the overall driving experience, particularly on long trips where this feature is most beneficial. Ignoring these symptoms could not only compromise your comfort but also pose safety risks, as it may lead to erratic vehicle behavior. Therefore, it is essential to diagnose and resolve the issue promptly to maintain the performance and safety of your BMW, ensuring a smoother and more enjoyable driving experience.

What are the common problems that could cause the cruise control to stop working in a 2015 BMW 740i?

When the cruise control in a 2015 BMW 740i ceases to function, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the first indicators of a malfunction is often a warning light on the dashboard, signaling that the vehicle's system has detected an issue. A blown fuse or a faulty brake pedal switch is frequently the culprit behind cruise control failures, as these components are essential for the system's operation. Additionally, problems with the throttle control system or the anti-lock braking system (ABS) can disrupt cruise control functionality. In older models, a broken vacuum line may also prevent the system from engaging properly. Furthermore, issues with the steering wheel wiring loom or the SZL unit can lead to significant cruise control malfunctions, often requiring repair or replacement. By being aware of these common problems, DIY enthusiasts can take the first steps toward diagnosing and potentially resolving cruise control issues in their BMW 740i.

Related 2015 BMW 740i Problems

Read about related problems experienced by other BMW 740i drivers like you.

BMW 740i suspected EC module issue after head gasket replacement and wiring problems

Some BMW 740i owners report experiencing issues after a head gasket replacement, including misfiring, which can lead to rough engine performance and may indicate misaligned components or unresolved problems. Additionally, external coolant leaks are commonly reported, which, while less severe, still require attention to avoid complications. Owners have also noted that improper torque on cylinder head bolts during the repair can result in uneven pressure on the gasket, leading to leakage and potential engine damage. Furthermore, some owners suspect issues with the Engine Control (EC) module and wiring, emphasizing the importance of checking connections and the wiring harness for damage. It is crucial for owners to address these concerns promptly to prevent further damage to the engine or electrical system, and consulting a qualified mechanic or BMW specialist is recommended for thorough inspection and resolution.

1 model year affected

Avg Mileage: 1171,000

1 other reported problem

1 comment

Mitsubishi Diamante cruise control malfunction after drive line obstruction removal

Some Mitsubishi Diamante owners report experiencing cruise control malfunctions after removing a drive line obstruction, often linked to issues with the control module, sensor, or switch. These problems may stem from failed components that prevent the cruise control system from engaging or holding speed, despite power being available to the dash and fuse. Additionally, throttle actuation issues, such as a faulty throttle position sensor, can lead to the engine's computer overcompensating with fuel, which may result in black exhaust from the tailpipe. Owners are advised to thoroughly troubleshoot the cruise control system and inspect key components like the control module, sensor, and throttle to identify any damage or malfunction caused during the obstruction removal process.

4 model years affected

Avg Mileage: 1162,250

5 others reported problem

1 comment

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