2018 Audi A5 Quattro Window Won't Go Up Or Down

Troubleshooting Common Issues with Your 2018 Audi A5 Quattro Windows and Effective Repair Solutions

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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 2018 Audi A5 Quattro 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 2018 Audi A5 Quattro 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 2018 Audi A5 Quattro?

To effectively diagnose a window issue in your 2018 Audi A5 Quattro, begin with a systematic approach that prioritizes simpler solutions before delving into more complex diagnostics. Start by checking the fuse associated with the window; a blown fuse is often the simplest explanation for a malfunction. If the fuse is intact, proceed to test the window switch to ensure it is operational, as a faulty switch can easily disrupt window functionality. Next, inspect the window motor, which is crucial for the window's movement; verify that it is receiving power and functioning correctly. Following this, examine the window regulator for any signs of damage, as it plays a vital role in the window's operation. Additionally, check the wiring connected to the window components for any visible issues, such as fraying or loose connections. Lastly, consider the window control module, as a malfunction here could also be the root of the problem. If these steps do not resolve the issue, or if you encounter complexities beyond your expertise, it may be wise to consult a professional mechanic or dealership for further assistance. This methodical approach not only helps in identifying the problem but also ensures that you address the most likely causes first, saving time and effort in the diagnostic process.

What are the common causes for the window not going up or down in a 2018 Audi A5 Quattro?

When dealing with a window that won't go up or down in a 2018 Audi A5 Quattro, it's essential to consider several 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 may have failed, preventing the window from moving at all; if the motor is not functioning, the window will remain stuck in its current position. Electrical issues are another frequent cause, so checking the fuses and the window switch for any malfunctions is a good starting point. Misalignment of the window can also hinder its movement, and adjusting the alignment may restore smooth operation. Lastly, the window control module, which manages the window's functionality, could be faulty, impacting the overall performance of the window system. By systematically examining these areas, DIYers can effectively troubleshoot and potentially fix the window issues in their Audi A5 Quattro.

How urgent is it to repair the non-functioning window in a 2018 Audi A5 Quattro?

Addressing a non-functioning window in your 2018 Audi A5 Quattro is not just a matter of convenience; it is a pressing safety concern that requires immediate attention. A malfunctioning window can severely compromise your visibility while driving, particularly in adverse weather conditions, increasing the risk of accidents. Moreover, if the window is stuck in an open position, it exposes your vehicle's interior to the elements, potentially leading to water damage or extreme temperature discomfort for passengers. This situation also heightens the risk of theft, as an unsecured window can make your car an easy target for break-ins. Additionally, the inconvenience of a non-functioning window can disrupt daily activities, such as using drive-thrus or interacting with toll booths. Given these factors, it is crucial to prioritize the repair of your window to ensure the safety, security, and overall comfort of your driving experience.

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