2011 Smart Fortwo Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2011 Smart Fortwo and How to Fix Them

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Reviewed by
Devin Cabugcal
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 2011 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 2011 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 2011 Smart Fortwo?

When troubleshooting the non-functional cruise control in a 2011 Smart Fortwo, it's essential to adopt a methodical diagnostic approach. Begin by checking the cruise control fuse, as a blown fuse is a straightforward issue that can easily disrupt the system. Next, inspect the cruise control switch located on the steering wheel; ensuring it operates correctly is crucial since a malfunction here can prevent engagement. Following this, verify the speed sensors, as they play a vital role in the cruise control's functionality; any faults can hinder its operation. Additionally, examine the brake pedal switch, which is designed to disable the cruise control for safety reasons if it malfunctions. Lastly, assess the throttle position sensor to confirm it is relaying accurate signals to the cruise control module, as discrepancies can lead to further complications. By systematically addressing these components, you can effectively identify and resolve the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2011 Smart Fortwo?

When troubleshooting cruise control issues in a 2011 Smart Fortwo, it's essential to consider several common problems that may be at play. One of the primary culprits could be a faulty cruise control switch, which may prevent the system from engaging or disengaging as intended. Additionally, a defective brake pedal switch can lead to unexpected disengagement, as it may fail to communicate properly with the cruise control system. Another critical component to examine is the speed sensor; if it malfunctions, it can provide inaccurate speed readings, hindering the cruise control's ability to maintain a set speed. Furthermore, a blown fuse within the cruise control system can completely disable its functionality, making it a straightforward issue to check. Lastly, vacuum leaks can disrupt the system's operation by affecting the engine's ability to maintain a constant speed. By systematically addressing these potential issues, DIYers can effectively diagnose and resolve cruise control problems in their Smart Fortwo.

How urgent is it to address the malfunctioning cruise control in a 2011 Smart Fortwo?

Addressing a malfunctioning cruise control in a 2011 Smart Fortwo is a matter of urgency that should not be overlooked. The safety risks associated with a faulty cruise control system can lead to unexpected vehicle behavior, such as sudden acceleration or deceleration, which can result in dangerous driving conditions and potential accidents. Moreover, the convenience of cruise control significantly enhances driving comfort, especially during long trips; thus, neglecting this issue can detract from the overall driving experience. Additionally, a malfunctioning cruise control may signal deeper electronic system problems within the vehicle, which, if left unaddressed, could lead to more severe damage and costly repairs down the line. Therefore, it is crucial to prioritize the inspection and repair of the cruise control system, ideally by a qualified mechanic, to ensure both safety and optimal vehicle performance. Taking prompt action not only safeguards your well-being but also preserves the integrity of your vehicle.

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2011 Smart Fortwo Cruise Control Malfunctions & Solutions