2015 Toyota Tundra Cruise Control Not Working

Troubleshooting Common Issues with Cruise Control in Your 2015 Toyota Tundra and How to Fix Them

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Reviewed by
Aisha
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 2015 Toyota Tundra 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 2015 Toyota Tundra 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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2015 Toyota Tundra?

When troubleshooting a non-functioning cruise control in a 2015 Toyota Tundra, it's essential to adopt a systematic diagnostic approach. Start by checking the fuses related to the cruise control system, as a blown fuse can easily disrupt functionality. Next, examine the cruise control switch itself; this component is often the culprit behind malfunctions, so ensure it activates properly when pressed. Following this, assess the vehicle speed sensor, which is crucial for the cruise control to operate correctly, as it provides the necessary speed data. Additionally, inspect the electrical connections and wiring associated with the cruise control system for any signs of damage or loose connections that could impede performance. Don't overlook the importance of safety systems; ensure that brake lights and other related components are functioning, as issues here can disable the cruise control. If the check engine light is illuminated, use an OBD-II scanner to identify any error codes that may be affecting the system. For a more in-depth analysis, consider utilizing diagnostic tools like Techstream to monitor the cruise control switch's signals. Lastly, perform a physical inspection of the cruise control cable to confirm it is intact and securely connected. By following these steps, you can effectively diagnose and potentially resolve the cruise control issue without the need for professional assistance.

What are the common problems that could cause the cruise control to stop working in a 2015 Toyota Tundra?

When dealing with cruise control issues in a 2015 Toyota Tundra, it's essential to understand the common problems that may arise. One frequent culprit is a faulty cruise control stalk, which can prevent the system from engaging properly. Additionally, brake light and brake switch malfunctions are significant factors; if the brake lights are not functioning or the brake pedal pressure switch is faulty, the cruise control will not activate. It's also wise to inspect the fuses related to the cruise control system, as loose or malfunctioning fuses can disrupt operation. Another area to consider is the clockspring within the steering column, which can lead to intermittent issues if it fails. Electrical and wiring problems, including damaged connections or wiring harnesses, can also hinder cruise control functionality. Furthermore, sensor and module failures, particularly with components like the throttle position sensor, can cause the system to malfunction. Lastly, ensure that the cruise control is correctly activated, as simple user errors can sometimes be the root of the problem. By systematically checking these areas, you can effectively troubleshoot and potentially resolve the cruise control issues in your Tundra. If these steps do not yield results, seeking assistance from a professional mechanic may be necessary for a more in-depth diagnosis.

How urgent is it to address the cruise control malfunction in my 2015 Toyota Tundra?

When dealing with a cruise control malfunction in your 2015 Toyota Tundra, understanding the urgency of the situation is crucial. If the issue stems from a faulty brake pedal switch, it is imperative to address it immediately, as this can lead to the vehicle mistakenly believing the brake is engaged, which not only disables the cruise control but also jeopardizes the functionality of your brake lights. This poses a significant safety risk on the road. Similarly, if a damaged speed sensor is at fault, it can disrupt both cruise control and speedometer accuracy, leading to unsafe driving conditions. While some issues, like a blown fuse, may seem less critical, they can still affect your driving comfort and may indicate underlying electrical problems that could escalate if left unattended. Therefore, it is essential to prioritize repairs based on the potential consequences of neglecting these symptoms, ensuring both your safety and the long-term reliability of your vehicle.

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