2005 Chrysler 300 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2005 Chrysler 300 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 2005 Chrysler 300 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 2005 Chrysler 300 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.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

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 steps to diagnose the cruise control issue in a 2005 Chrysler 300?

To effectively diagnose a cruise control issue in a 2005 Chrysler 300, it's essential to adopt a systematic approach that begins with the simplest potential problems before progressing to more complex diagnostics. Start by checking the fuse associated with the cruise control system, as a blown fuse can often be the root cause of malfunction. Next, inspect the cruise control buttons on the steering wheel to ensure they are functioning correctly, as faulty buttons can disrupt the system's operation. Following this, examine the brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied; a malfunctioning switch can prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific issues affecting the cruise control system. Additionally, verify the speed sensor's functionality, as it is vital for accurate speed readings necessary for cruise control operation. Lastly, if your vehicle's cruise control relies on vacuum lines, inspect these for any leaks or damage that could impair performance. By methodically addressing these areas, you can effectively troubleshoot and resolve cruise control issues in your Chrysler 300.

What are the common problems that could cause the cruise control to stop working in a 2005 Chrysler 300?

When troubleshooting cruise control issues in a 2005 Chrysler 300, it's essential to consider several common problems that may be at play. One of the primary culprits is a faulty brake pedal switch, which can prevent the cruise control from engaging or cause it to disengage unexpectedly. Additionally, a defective speed sensor can disrupt the system's ability to maintain a constant speed, leading to erratic performance. It's also worth checking for a blown fuse, as this can completely disable the cruise control functionality. Another potential issue is vacuum leaks within the engine, which can adversely affect the operation of the cruise control system. Lastly, a malfunctioning cruise control module may be the root cause of the problem, preventing the system from working as intended. By systematically examining these components, DIYers can effectively diagnose and address the cruise control issues in their Chrysler 300.

How urgent is it to address the non-functioning cruise control in a 2005 Chrysler 300, considering potential safety risks and further damage?

Addressing the non-functioning cruise control in a 2005 Chrysler 300 is of utmost urgency due to the significant safety risks it poses. A malfunctioning cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which can be particularly hazardous on highways where maintaining a steady speed is crucial. This unpredictability not only increases the risk of accidents but can also contribute to driver fatigue and distraction, making it essential to resolve the issue promptly. Furthermore, neglecting the problem can lead to more severe damage to the vehicle's components, including the throttle control system and electrical circuits. Such neglect can escalate repair costs and compromise the vehicle's overall performance and longevity. Therefore, it is vital for owners to prioritize the repair of their cruise control system to ensure both their safety and the health of their vehicle.

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