2017 Toyota Sienna Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2017 Toyota Sienna 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2017 Toyota Sienna 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 Toyota Sienna 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 steps to diagnose the cruise control issue in a 2017 Toyota Sienna?

To effectively diagnose a cruise control issue in a 2017 Toyota Sienna, it's essential to adopt a systematic approach that begins with the simplest checks before progressing to more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are operational and not stuck, as this can prevent engagement. Utilizing an OBD-II scanner to check for error codes can provide critical insights into any underlying issues. Following this, assess the vehicle speed sensor, as a malfunction here can directly impact cruise control performance. Additionally, inspect the brake light switch, since a faulty switch can inhibit the cruise control from activating. It's also important to examine the wiring and connections for any signs of damage or corrosion, which could lead to communication failures within the system. Finally, testing the cruise control module will help confirm whether it is functioning correctly and transmitting signals as intended. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control problem in your Sienna.

What are the common problems that could cause the cruise control to stop working in a 2017 Toyota Sienna?

When troubleshooting cruise control issues in a 2017 Toyota Sienna, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty brake pedal switch, which can disrupt the system's ability to engage or disengage, leading to unexpected behavior. Additionally, a malfunctioning speed sensor can prevent the cruise control from maintaining a consistent speed, causing frustration during long drives. Another potential issue is a blown fuse, which can completely disable the cruise control system. It's also important to consider the throttle actuator; if it is not functioning correctly, it can hinder the cruise control's operation. Lastly, problems with the Electronic Control Module (ECM) can affect various vehicle functions, including cruise control. By identifying and addressing these issues, you can effectively troubleshoot and restore the cruise control functionality in your Sienna, ensuring a smoother driving experience.

How urgent is it to address the malfunctioning cruise control in my 2017 Toyota Sienna?

Addressing the malfunctioning cruise control in your 2017 Toyota Sienna is of utmost importance due to the immediate safety risks it poses. A faulty cruise control system can lead to unexpected acceleration or deceleration, increasing the likelihood of accidents on the road. Moreover, neglecting this issue can exacerbate the problem, potentially causing damage to other vehicle systems, which may result in more extensive and costly repairs down the line. Beyond safety and repair costs, a properly functioning cruise control enhances your driving experience by providing comfort and efficiency during long trips. Therefore, it is crucial to prioritize the repair of your cruise control system to ensure your safety, protect your investment, and enjoy the full benefits of your vehicle's features.

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