2017 Toyota Mirai Window Won't Go Up Or Down

Common Causes of Window Malfunctions in Your 2017 Toyota Mirai and How to Fix Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
36% chance it's the
Fuse, Relay or Electrical System
0%
20% chance it's the
Window Motor
0%
24% chance it's the
Window Regulator
0%
20% chance it's
Something else
The most common reasons a 2017 Toyota Mirai window won't go up or down are window's electrical system such as a fuse or relay, a broken window motor, or a broken window regulator.
  • Fuse, Relay or Electrical System: A blown fuse or a faulty relay can disrupt the electrical circuit, causing components to fail or operate intermittently.
  • Window Motor: A faulty window motor or a broken window regulator can prevent the window from moving up or down properly.
  • Window Regulator: A faulty window regulator can cause the window to become stuck or operate erratically due to worn gears or a broken cable.
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 Mirai window won't go up or down?

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.

Like we noted in the last section, general diagnosis symptoms are the most vague of the bunch. There are several diagnostic spectrums, electrical diagnosis, drivability diagnostics, engine diagnostics, transmission diagnostics, and the list could continue for about 5 or 10 more spectrums of diagnostics. The most important take-away here, is that general diagnostics are diagnostics that have no other spectrum in which they fit, or the problem is unknown. This means that any vehicle left outside of a repair facility with the keys and an authorization to perform diagnosis will be diagnosed under the general diagnosis spectrum.

What are the steps to diagnose the window malfunction in a 2017 Toyota Mirai?

To effectively diagnose a window malfunction in your 2017 Toyota Mirai, start with the simplest solutions before progressing to more intricate assessments. Begin by testing the window switch to ensure it operates correctly; if it controls other windows, the switch is likely functional. Next, inspect the fuse box for any blown fuses related to the window, as this is a common and easily fixable issue. If the fuse is intact, use a multimeter to check for power at the window motor, as a lack of power may indicate a problem with the motor or wiring. Following this, examine the window regulator for any visible damage, as a faulty regulator can hinder window movement. Additionally, look for any obstructions in the window track that could impede its operation, and ensure the window is properly aligned within the frame, as misalignment can also lead to malfunctions. By following this structured approach, you can efficiently identify and address the cause of the window issue in your vehicle.

What are the common problems that could cause the window in a 2017 Toyota Mirai to not go up or down?

When dealing with a window that won't go up or down in a 2017 Toyota Mirai, it's essential to understand the common problems that could be at play. One of the primary culprits is a faulty window regulator, which is crucial for the window's movement. If this component is damaged, the window may become stuck. Additionally, issues with the power window motor can prevent the window from operating smoothly; a worn-out motor may fail to provide the necessary power. Electrical problems, such as blown fuses or faulty wiring, can also disrupt the window's functionality, making it vital to check the electrical system. Another potential issue is a malfunctioning window switch, which can stop the window from responding to commands. Furthermore, if the window has come off its track, it will not move properly, often requiring realignment. Lastly, any damage to the window glass itself, like cracks or chips, can hinder movement and may necessitate repair or replacement. By identifying and addressing these common issues, you can effectively troubleshoot and restore the window's functionality in your Toyota Mirai.

How urgent is it to repair the malfunctioning window in a 2017 Toyota Mirai?

When faced with a malfunctioning window in your 2017 Toyota Mirai, addressing the issue promptly is crucial for several reasons. First and foremost, safety is paramount; a window that does not operate correctly can severely limit visibility, increasing the risk of accidents and making the vehicle vulnerable to break-ins. Additionally, a malfunctioning window can expose the interior to harsh weather conditions, leading to discomfort and potential damage to upholstery and electronics. Ignoring this issue can escalate into more significant problems, such as water damage or electrical failures, which can be costly to repair. Furthermore, in many jurisdictions, driving with a non-functional window may violate safety regulations, resulting in fines or legal repercussions. Therefore, it is essential to prioritize the repair of your window to ensure the safety of both the vehicle and its occupants, maintain the vehicle's integrity, and comply with legal standards.

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