2016 Smart Fortwo Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2016 Smart Fortwo 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
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2016 Smart Fortwo 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 2016 Smart Fortwo 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 initial diagnostic steps to troubleshoot the non-functional cruise control in a 2016 Smart Fortwo?

When troubleshooting the non-functional cruise control in a 2016 Smart Fortwo, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, verify the functionality of the cruise control switch; ensure it engages properly when activated, as a malfunctioning switch can prevent the system from engaging. Following this, inspect the speed sensors, which are crucial for the cruise control to function correctly; any faults here can disrupt the system's performance. Additionally, examine the wiring connections associated with the cruise control system for any loose or damaged wires that could be causing the issue. Finally, if the problem persists, consider using a diagnostic scanner to check for error codes that may provide further insight into the underlying issue. By following these steps, you can effectively diagnose and potentially resolve the cruise control problem in your Smart Fortwo.

What are the common problems that could cause the cruise control to stop working in a 2016 Smart Fortwo?

When troubleshooting the cruise control system in a 2016 Smart Fortwo, it's essential to understand the common problems that may lead to its malfunction. One frequent issue is a faulty speed sensor, which can disrupt the system's ability to accurately gauge the vehicle's speed, preventing the cruise control from engaging or maintaining speed. Additionally, a blown fuse can interrupt the electrical flow necessary for the cruise control to function, while a malfunctioning brake light switch may inadvertently signal the system to disengage whenever the brakes are applied. Problems with the throttle actuator can also arise, as this component is crucial for regulating engine speed and ensuring the cruise control maintains a steady pace. Lastly, a defective cruise control module can hinder the entire system's operation, necessitating repair or replacement. By identifying these potential issues, DIY enthusiasts can better diagnose and address the problems affecting their vehicle's cruise control functionality.

How urgent is it to address the non-functioning cruise control in a 2016 Smart Fortwo?

When it comes to the non-functioning cruise control in a 2016 Smart Fortwo, understanding the urgency of the situation is crucial for any DIY enthusiast. While the immediate safety risks may not be as severe as those associated with malfunctioning brakes or steering, neglecting the cruise control issue can lead to a range of inconveniences and potential complications. For instance, without cruise control, long drives can become more tiring, increasing driver fatigue and reducing overall comfort. Moreover, unresolved cruise control problems might signal underlying issues within the vehicle's electrical or mechanical systems, which could escalate into more significant repairs if left unchecked. Therefore, while it may not be an emergency, addressing the cruise control malfunction promptly is advisable to maintain the vehicle's performance and ensure a smoother driving experience. Taking the time to inspect and repair this feature can prevent future inconveniences and contribute to the overall reliability of your Smart Fortwo.

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