2017 Mercedes-Benz AMG GT S Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2017 Mercedes-Benz AMG GT S and How to Fix Them

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Reviewed by
Bo Fader
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 2017 Mercedes-Benz AMG GT S 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 2017 Mercedes-Benz AMG GT S 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 steps should I take to diagnose the cruise control issue in my 2017 Mercedes-Benz AMG GT S?

To effectively diagnose the cruise control issue in your 2017 Mercedes-Benz AMG GT S, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse is a common and easily fixable problem that can disrupt the system's functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, as faulty buttons can prevent engagement. Utilizing an OBD-II scanner to check for error codes is a crucial step, as these codes can pinpoint specific issues within the cruise control system. Following this, verify the speed sensors, which are essential for the cruise control to function correctly; any faults here can lead to significant problems. Additionally, inspect the wiring connections associated with the cruise control system for any signs of damage or corrosion, as poor connections can hinder performance. Finally, test the cruise control module itself to confirm it is functioning properly, as a malfunctioning module can be the root cause of the issue. By following this structured diagnostic approach, you can identify and address the underlying problems affecting your vehicle's cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2017 Mercedes-Benz AMG GT S?

When troubleshooting the cruise control system in a 2017 Mercedes-Benz AMG GT S, it's essential to understand the common problems that may lead to its malfunction. One prevalent issue is a faulty speed sensor, which can disrupt the system's ability to detect the vehicle's speed accurately, preventing it from engaging or maintaining speed. Additionally, the brake light switch plays a crucial role; if it malfunctions, the cruise control may fail to activate or disengage properly when the brake pedal is pressed. Another potential culprit is the throttle actuator, which controls the engine's throttle opening and is vital for maintaining a constant speed. Electrical problems, such as blown fuses or wiring issues, can also hinder the cruise control's functionality, as can vacuum leaks in the engine that affect the necessary vacuum pressure for operation. By identifying and addressing these common issues, you can effectively troubleshoot and restore the cruise control system in your vehicle.

How urgent is it to address the malfunctioning cruise control in a 2017 Mercedes-Benz AMG GT S?

Addressing the malfunctioning cruise control in your 2017 Mercedes-Benz AMG GT S is of utmost importance due to the potential safety risks and performance implications involved. A malfunctioning cruise control system can lead to unexpected acceleration or deceleration, creating hazardous driving conditions that could result in accidents. Moreover, neglecting this issue may exacerbate the problem, leading to more extensive damage to the vehicle's electronic systems, which could incur significant repair costs down the line. Timely intervention not only ensures your safety on the road but also helps maintain the overall efficiency and driving experience of your luxury vehicle. Therefore, it is crucial to prioritize this repair to safeguard both your well-being and the integrity of your Mercedes-Benz.

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