2021 BMW I3 Window Won't Go Up Or Down

Troubleshooting Common Issues with Your 2021 BMW i3 Windows and Effective Fixes

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Reviewed by
Aisha
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 2021 BMW i3 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 2021 BMW i3 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 are the initial diagnostic steps to take for a 2021 BMW i3 window that won't operate?

When faced with a non-operational window in your 2021 BMW i3, start by checking the window switch to ensure it is functioning properly; a simple test can reveal if it is sending the necessary signal to the window motor. Next, inspect the relevant fuse to determine if it has blown, as this can easily disrupt the window's operation. If the switch and fuse are in good condition, proceed to test the window motor for power when the switch is activated; if power is present but the motor remains unresponsive, it may require replacement. Additionally, examine the window regulator for any signs of damage or wear, as a faulty regulator can hinder window movement. Finally, look for any obstructions in the window track that could be blocking its path. By following this structured diagnostic approach, you can effectively identify and address the issue with your BMW i3 window, ensuring a smoother repair process.

What are the common problems that could cause the windows to stop functioning in a 2021 BMW i3?

When dealing with window issues in a 2021 BMW i3, it's essential to understand the common problems that may arise. One frequent culprit is the window regulator, which is crucial for the smooth operation of the window; if it malfunctions, the window may become stuck or fail to move altogether. Another potential issue is a faulty window motor, which powers the regulator; without a functioning motor, the window will not respond to commands. Additionally, electrical problems such as blown fuses or damaged wiring can disrupt the power supply to the window system, leading to operational failures. It's also important to consider the window switches, as a defective switch may not send the correct signals to the motor, preventing the window from functioning. Lastly, improper window alignment can cause the window to get stuck or move unevenly, often due to issues with the window track or mounting. By identifying and addressing these common problems, you can effectively troubleshoot and restore functionality to the windows of your BMW i3.

How urgent is it to fix the window issue on my 2021 BMW i3 that won't go up or down?

When faced with a window issue on your 2021 BMW i3 that won't go up or down, it is crucial to recognize the urgency of the situation. A malfunctioning window can create significant safety concerns, particularly if it is stuck in a partially open position, exposing you to adverse weather conditions and reducing visibility while driving. Additionally, an open window can compromise the security of your vehicle, making it an easy target for theft or vandalism. Beyond safety and security, neglecting this issue can lead to further complications within the electrical system of your car, potentially resulting in more extensive and costly repairs. To protect your vehicle's interior from weather-related damage and to ensure a safe driving experience, it is advisable to address the window malfunction as soon as possible. Seeking a professional inspection will not only help diagnose the problem accurately but also prevent any additional damage, ensuring your BMW i3 remains in optimal condition.

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2021 BMW i3 Window Issues: Troubleshooting & Repair Costs