2020-2021 Genesis G90 Window Switch Failure: Diagnosis, Part Numbers, and Replacement
A complete guide to troubleshooting and replacing a faulty door window switch in your 2020-2021 Genesis G90, with a focus on finding the correct used OEM part.
- The single most important step is to physically remove your old switch and match its part number exactly before ordering a replacement.
- A common symptom is a window working from its own door switch but not the driver's master switch, which points to a faulty master switch.
- There are no specific recalls or TSBs for this part, meaning failures are typically due to normal wear and tear.
- A used OEM switch from a reputable recycler is the best value, as new OEM switches are very expensive and aftermarket options are not recommended.
Symptoms of a Failing Door Window Switch
Diagnosing a window switch problem in the 2020-2021 Genesis G90 is usually straightforward. The issue is most likely the switch if you experience the following:
- One Window is Unresponsive from the Master Switch: The most common symptom is when a specific window (e.g., the front passenger) won't operate from the driver's master switch, but it works perfectly using the switch on its own door. This isolates the problem to the driver's master switch assembly.
- Window Works from Master Switch, Not Door Switch: The reverse of the above symptom. If a window can be controlled by the driver but not by its own door switch, the individual door switch has likely failed.
- Intermittent Operation: The switch works some of the time, but not always. This can be caused by worn internal contacts and often gets worse over time.
- No Sound or Action: When you press the button, you hear no click from the door and the window motor does not make any sound. This points to a failure in the switch or its electrical connection. 🎬 Watch: How to test a master window switch and circuit If you hear the motor whirring or clicking inside the door but the glass doesn't move, the problem is more likely the window regulator or motor, not the switch.
- Loss of Auto Up/Down Function: If the one-touch 'auto' feature stops working, it can sometimes indicate a switch problem, but it's often just in need of a reset. This is common after the vehicle's battery has been disconnected.
Pro Tip: Before assuming the switch is bad, always check that the window lock-out button on the driver's master switch is not engaged. It's a simple oversight that can mimic a failed switch.
Known Issues, TSBs, and Recalls
As of early 2026, there are no specific recalls or Technical Service Bulletins (TSBs) from Genesis or the National Highway Traffic Safety Administration (NHTSA) for the door window switches on the 2020-2021 Genesis G90. While other recalls exist for this vehicle, the window control system has not been identified as having a widespread, safety-related manufacturing defect.
Buying a Used Door Window Switch
For the 2020-2021 G90, a high-quality, tested used OEM window switch is often the best value. New OEM switches, especially the driver's master assembly, can be very expensive, while aftermarket options are generally unavailable or of questionable quality for this luxury vehicle.
The Most Important Step: Match the Part Number
Genesis uses multiple switch variations depending on the vehicle's options and interior color. The only way to guarantee a replacement switch will work correctly is to match the OEM part number exactly. The part number is printed on a sticker on the switch's housing, which requires removing the door panel to see.
Warning: Do not order a switch based on appearance alone. A switch without memory seat buttons will not work in a car equipped with them. You must verify the part number on your original switch before purchasing a replacement.
Physical Inspection Checklist
- Check the Connector: Look at the electrical connector port and pins. Avoid any switch with signs of corrosion (green or white crust), bent pins, or cracked plastic.
- Button Feel: The buttons should have a solid, tactile click. Mushy or loose buttons indicate excessive wear.
- Inspect for Cracks: Check the plastic housing for any cracks, especially around the mounting points where it screws into the door panel.
- Confirm Functionality: Purchase from a reputable recycler who has tested the switch and guarantees its functionality.
Cost Breakdown
The cost to replace a window switch on a G90 varies significantly between the master switch and the individual passenger switches.
| Part Type | Estimated Cost | Notes |
|---|---|---|
| New OEM (Master Switch) | $500 - $700+ | Extremely expensive. Price sourced from dealer estimates for similar luxury models. |
| New OEM (Single Switch) | $200 - $285 | Based on the confirmed price for the rear right switch (P/N 93580-D2700-VCA). |
| Used OEM (Master Switch) | $100 - $250 | Offers the best balance of quality and price. Price depends on condition and seller. |
| Used OEM (Single Switch) | $40 - $90 | A cost-effective repair for a single failed passenger switch. |
| New Aftermarket | Not Recommended | Aftermarket options are rare for this vehicle and likely have issues with fit, button feel, and longevity. |
| Shop Labor | $75 - $150 | A professional mechanic can typically complete this job in 0.5 to 1.0 hours. |
Replacement Difficulty: 2/5
Replacing a window switch is a DIY-friendly job for those comfortable with basic tools. The main task is carefully removing the interior door panel without damaging the trim or clips.
- Disconnect the Battery: As a safety precaution, disconnect the negative battery terminal.
- Remove Trim and Screws: Carefully pry off any small trim covers hiding screws. On the G90, screws are typically found in the door pull handle area and behind a trim piece near the interior door latch.
- Pry the Door Panel: Use a plastic trim removal tool to gently pry around the perimeter of the door panel, releasing the plastic clips that hold it to the door frame. 🎬 Watch: How to remove a Genesis G90 door panel
- Lift and Disconnect: Lift the panel up and off the window ledge. Disconnect the electrical connectors for the switch, speaker, and courtesy light, as well as the mechanical door handle cable.
- Swap the Switch: The window switch is typically held to the back of the door panel with a few small screws. Unscrew the old switch and install the new one. 🎬 See this Genesis window switch replacement walkthrough
- Reassemble: Reconnect all cables and connectors, then hang the door panel back on the door frame. Press firmly around the edges to re-engage the clips, and reinstall the screws and trim pieces.
Frequently Asked Questions (FAQ)
My 'auto up/down' feature stopped working. Is the switch broken?
Not usually. This is a common issue after the battery has been disconnected or replaced. You need to re-initialize the power window. To do this, roll the window all the way down, then roll it all the way up and hold the switch in the 'up' position for 2-3 seconds after it closes. This should restore the auto function.
Can I replace just the one button that failed on my master switch?
No, the master switch is a sealed, integrated electronic module. The individual buttons are not sold separately. If any part of the master switch fails, the entire assembly must be replaced.
Why are there so many different part numbers?
Part numbers vary based on the vehicle's specific options, such as memory seats, power-folding mirrors, and interior color. A suffix on the part number, like -NNB for black, often indicates the color. This is why it is essential to match the part number from your original switch.
Is the driver's switch the same as the passenger's switch?
No, they are completely different. The driver's side has the master switch assembly which controls all windows and locks. The passenger and rear doors use smaller, single switches that only control their respective windows.
Helpful Videos
![Replacing Window Switches! [ Genesis Sedan ]](https://img.youtube.com/vi/sviLYGe7bSE/mqdefault.jpg)
Technical Specifications
OEM Part Numbers: 93580-D2700-VCA (Rear Right Passenger Side) Note: The Driver's Master Switch, Front Passenger, and Rear Left switch part numbers are not consistently documented. Verification by VIN with a dealer or by removing the original part is required.
Varies by trim and options (Memory Seats, Power Folding Mirrors, Interior Color)
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Genesis G90:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Symptoms of a Failing Door Window Switch
- Known Issues, TSBs, and Recalls
- Buying a Used Door Window Switch
- The Most Important Step: Match the Part Number
- Physical Inspection Checklist
- Cost Breakdown
- Replacement Difficulty: 2/5
- Frequently Asked Questions (FAQ)
- 🎟️ Get 5% Off