2019 Lexus LC500 Window Won't Go Up Or Down

Troubleshooting Common Issues with Your 2019 Lexus LC500 Windows and Effective Fixes

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Reviewed by
Bo Fader
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 2019 Lexus LC500 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 2019 Lexus LC500 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.

If the door window motor fails, the window may not open or close, or it may operate intermittently. Traditionally, problems with power windows were caused by faulty switches or electrical wiring - especially the wires running between the door and the vehicle body that are subjected to repeated flexing. In these cases, the window might operate intermittently when the door is opened and closed. While this may still be the case on newer cars, it is increasingly common to find window motor problems that originate with a control module. Still, the switches and wiring should be checked thoroughly before replacing a window motor.

If one of the windows in a vehicle will not open or close properly, a failing door window regulator might be the cause. A window that is moving intermittently, or one that gets stuck on the way up or down, could also indicate a broken regulator. Other symptoms might include a clicking, chattering, or grinding noise when the window moves. In some cases a severely damaged window regulator could cause the window to drop inside the door.

When a switch can not make contact and close the circuit, the window cannot be raised and lowered. If the switch on the driver's door will not raise or lower the window in question, but the switch on the corresponding door works just fine, this is a good indication that there is a switch failure. This works the other way around, as well. If the switch on the door does not cause the window to function, but the driver's switch does, that is an indication of a passenger door window switch failure.

Due to the nature of electrical systems on modern vehicles, the range of problems these can cause are nearly limitless. However, there is a way to categorize them in two ways. Permanent and intermittent problems. Permanent problems appear and remain. This may be the vehicle will not start, the radio does not work, or the door chime will not turn off among many, many others. These problems are more straight-forward to diagnose since they present themselves at all time. This means there will always be a fault to find. Intermittent electrical problems, however, can be difficult or impossible to locate, since they appear then disappear without warning. The best case scenario for an intermittent issue is when replicating the problem is easily accomplished and understood. This allows a technician to make an issue semi-permanent, allowing them to find the fault. Other issues that come and go without warning and cannot be replicated on demand must occur when the technician is servicing the vehicle, otherwise there is no problem to correct. It is most important to understand that electrical system faults always require inspection, and can include the vehicle working in any manner, or not working at all.

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 steps should I take to diagnose the window issue in my 2019 Lexus LC500 that won't go up or down?

When diagnosing a window issue in your 2019 Lexus LC500, it's essential to adopt a systematic approach that begins with the simplest solutions before progressing to more complex diagnostics. Start by checking the window switch, as a malfunctioning switch is often the easiest fix. If the switch appears to be functioning, move on to inspecting the fuses in the fuse box, as a blown fuse can halt window operation. Next, test the window motor to ensure it is receiving power and operating correctly; if the motor is unresponsive, it may need replacement. Following this, examine the window regulator, which is crucial for the window's movement; any damage here could prevent the window from functioning. Additionally, look for any obstructions in the window track that might impede movement, as debris can easily cause issues. Finally, inspect the wiring connecting the switch to the motor and regulator, as damaged or loose connections can lead to operational failures. By following this diagnostic approach, you can effectively identify the root cause of the window issue in your Lexus LC500, ensuring a thorough and efficient troubleshooting process. If problems persist after these checks, seeking professional assistance may be necessary.

What are the common problems that could cause the window in a 2019 Lexus LC500 to stop working?

When dealing with a non-functioning window in a 2019 Lexus LC500, it's crucial to understand the common problems that may be at play. One of the primary culprits is a faulty window regulator, which can hinder the window's ability to move smoothly. Additionally, electrical issues such as a blown fuse or a malfunctioning window switch can disrupt the power supply to the window motor, preventing it from operating. If the window motor itself has failed, you may notice that pressing the switch yields no response at all. Another factor to consider is window alignment; if the window is misaligned, it may get stuck or move unevenly, leading to further complications. Lastly, mechanical obstructions, such as debris in the window track, can also impede the window's movement. By identifying these common issues, DIYers can take the necessary steps to diagnose and fix the problem, restoring the window's functionality efficiently.

How urgent is the window malfunction in my 2019 Lexus LC500, and what steps should I take to address it?

When faced with a window malfunction in your 2019 Lexus LC500, it is crucial to act swiftly to mitigate safety risks and prevent further damage. A window stuck in an open or closed position not only compromises your vehicle's security but can also expose it to the elements, leading to interior damage. Start by assessing the severity of the malfunction; if the window is partially open, it is imperative to secure your vehicle to deter theft. Next, check the fuses associated with the window system, as a blown fuse is a common culprit behind such issues. If the fuses are intact, test the window switch to ensure it is functioning correctly, as a faulty switch can prevent the window from operating. Additionally, inspect the window regulator, which is responsible for the window's movement; a malfunction here may require replacement. If these steps do not resolve the issue, seeking professional help is advisable, as certified mechanics possess the expertise to diagnose and repair complex problems. To prevent future malfunctions, consider implementing regular maintenance checks on your vehicle's window system. Addressing these issues promptly not only enhances your safety and comfort but also preserves the integrity of your Lexus LC500.

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