2021 Mercedes-Benz GLC63 AMG Window Won't Go Up Or Down

Troubleshooting Common Issues with Your 2021 Mercedes-Benz GLC63 AMG 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 2021 Mercedes-Benz GLC63 AMG 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 Mercedes-Benz GLC63 AMG 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 2021 Mercedes-Benz GLC63 AMG?

To effectively diagnose a window issue in your 2021 Mercedes-Benz GLC63 AMG, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by testing the window switch to confirm its functionality, as a malfunctioning switch can prevent the window from operating. If the switch appears to be working, proceed to inspect the fuses associated with the window system in the fuse box, since a blown fuse is a frequent cause of window failures. If both the switch and fuses are intact, listen for any sounds from the window motor when you activate the switch; if the motor is running but the window does not move, the issue may lie with the window regulator or motor itself. Additionally, examine the window regulator for any signs of wear or damage, as this component is vital for the window's movement. It's also important to check for any physical obstructions in the window tracks, as debris can impede smooth operation. Lastly, inspect the wiring connected to the window motor and switch for any signs of damage or loose connections, as faulty wiring can also contribute to window issues. By following this methodical approach, you can effectively pinpoint the source of the problem and determine the necessary repairs or replacements needed to restore your window's functionality.

What are the common problems that could cause the window of a 2021 Mercedes-Benz GLC63 AMG to stop working?

When dealing with a non-functioning window in a 2021 Mercedes-Benz GLC63 AMG, 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 responsible for the mechanical movement of the window and can wear out over time, leading to operational issues. Additionally, the window motor itself may be malfunctioning; if it fails, the window will not respond to commands from the switch. Electrical problems, such as blown fuses or damaged wiring, can also disrupt the window's functionality, making it crucial to inspect the vehicle's electrical system. Another potential issue is a malfunctioning window switch, which may fail to send the correct signals to the motor, preventing the window from moving. Furthermore, alignment issues can cause the window to get stuck, while obstructions in the window's path, such as debris, can also hinder its movement. By systematically checking these areas, you can effectively troubleshoot and resolve window problems in your GLC63 AMG.

How urgent is it to address the malfunctioning window in a 2021 Mercedes-Benz GLC63 AMG?

Addressing a malfunctioning window in a 2021 Mercedes-Benz GLC63 AMG is crucial for several reasons. First and foremost, a window that fails to close properly compromises the vehicle's security, making it an easy target for theft or vandalism, especially in public spaces. Additionally, leaving a window open can expose the interior to adverse weather conditions, such as rain or snow, which can lead to costly damage and discomfort for passengers. Furthermore, a malfunctioning window may indicate underlying electrical or mechanical issues that, if left unchecked, could escalate into more significant problems requiring expensive repairs. Therefore, it is advisable to prioritize the repair of a malfunctioning window to ensure the safety, security, and overall integrity of your vehicle.

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2021 Mercedes-Benz GLC63 AMG Window Troubleshooting Guide