2022-23 Bolt EUV & 2018-20 Regal Window Switch: Failure, Diagnosis & Replacement
Diagnosing a faulty driver's door window switch in your Chevrolet Bolt EUV or Buick Regal, and why checking for the 24-pin connector is critical before you buy.
- This driver's side switch (OEM part #84513458) fits 2022-23 Bolt EUV and 2018-20 Regal models WITHOUT memory seats.
- Before buying, you must verify your original switch has a 24-pin connector to ensure compatibility.
- The most common failure is a window that goes down but not up, which is a clear sign the switch itself is bad.
- Replacement is easier on the Buick Regal (pry up bezel) than the Chevy Bolt EUV (remove door panel).
Symptoms of a Failing Door Window Switch
When the master window switch in your 2022-2023 Chevrolet Bolt EUV or 2018-2020 Buick Regal begins to fail, the symptoms can range from a minor annoyance to a major problem. Because all window commands run through this single unit, a fault here can affect one or all windows.
- One Window Won't Operate From the Driver's Door: The most common failure. For example, the driver's switch won't operate the rear passenger window, but the switch on the rear passenger door itself still works. This points directly to a failure within the master switch's circuit for that specific window.
- Window Goes Down But Not Up: This classic symptom is almost always caused by worn-out internal contacts inside the switch. The contacts for the 'up' command often fail first due to the higher electrical load required to lift the window against gravity.
- Intermittent Operation: You might have to press a button multiple times to get a window to move. This is often due to dirt, moisture, or corrosion on the internal switch contacts, causing a poor connection.
- No Windows Work at All: If none of the windows operate from the master switch, the problem could be the switch assembly itself, a blown fuse, or a bad power feed to the switch. A simple first step is to check the power window fuse.
- Mirror Controls Don't Work: Since the mirror adjustment control is integrated into the same panel, its failure is also a symptom that the entire unit needs replacement.
Known Issues, TSBs, and Recalls
Searches of NHTSA records and technical service bulletins (TSBs) do not show any widespread, common failures or recalls specifically for the door window switch on the 2022-2023 Chevrolet Bolt EUV or the 2018-2020 Buick Regal. Failures of this part are typically due to normal wear and tear over the life of the vehicle.
It is worth noting that both vehicles have had recalls for other components. The Bolt EUV was subject to a major recall for its high-voltage battery pack due to fire risk (NHTSA Recall 21V-650). The 2018-2020 Buick Regal has had recalls related to the brake system and seat frame welds. However, these issues are unrelated to the window switch assembly.
Pro Tip: On the Chevrolet Bolt EUV, a message may appear on the instrument cluster stating "Open and then close driver window." This is a window calibration or re-learn procedure, not necessarily a sign of a faulty switch. It often appears after the 12-volt battery has been disconnected or is becoming weak. Following the on-screen instruction usually resolves the message.
Buying a Used Door Window Switch Panel
A used OEM switch is often a smart choice, providing the same fit, feel, and function as the original part for significantly less than a new one from the dealer. Cheap aftermarket switches can feel "muddy" or "sticky" and may not have the precise two-stage feel for the auto-up/down function. Here’s what to check before buying a used switch for your Bolt EUV or Regal.
Key Verification Checks:
- Confirm the Part Number: The most common OEM part number for this switch is 84513458. This part number supersedes the older number 26218340.
- Check the Connector: This is the most critical step. Unplug your original switch and count the pins. This switch uses a 24-pin connector. Do not buy a replacement unless you have verified the pin count matches your vehicle's harness.
- Verify Vehicle Options: This specific switch (84513458) is for models WITHOUT memory seats. It controls manual-folding mirrors. If your vehicle has memory seats or power-folding mirrors, you will need a different switch.
- Physical Inspection: Check for excessive wear on the button graphics. Ensure the plastic housing isn't cracked and that all mounting tabs are intact. The joystick for the mirror control should move freely but not feel loose.
Cost Comparison
Prices can vary, but here is a typical cost breakdown for a driver's door window switch panel:
| Part Type | Estimated Cost |
|---|---|
| New OEM | $55 - $80 |
| New Aftermarket | $25 - $85 |
| Used OEM | $20 - $65 |
| Shop Labor | $60 - $145 |
Replacement Overview & Difficulty
Replacing the master window switch is a straightforward DIY job for most owners. No special programming is required after installation.
- Difficulty: 1-2 out of 5
- Estimated Time: 15-30 minutes
Vehicle-Specific Replacement Steps:
For the 2018-2020 Buick Regal (Sportback & TourX):
- Using a plastic trim removal tool, carefully pry up the front edge of the switch panel bezel on the driver's door armrest.
- Lift the entire bezel assembly out.
- Press the release tab on the electrical connector and unplug the harness from the switch.
- From the back of the bezel, release the clips holding the old switch in place and remove it.
- Snap the new switch into the bezel, reconnect the electrical harness, and press the bezel back into the door panel until it clicks into place.
For the 2022-2023 Chevrolet Bolt EUV:
The process for the Bolt EUV is more involved as the switch is secured from underneath the door panel.
- The entire interior door panel must be removed first. This involves removing several screws (often behind small covers in the door pull and handle area) and using a trim tool to release the clips around the perimeter of the panel.
- Once the door panel is off, flip it over to access the back of the switch assembly.
- Disconnect the electrical harness.
- Press on the retaining tabs that hold the switch module to the door panel and push it out.
- Install the new switch by snapping it into place, reconnect the harness, and reinstall the door panel.
Frequently Asked Questions (FAQ)
Only one window stopped working. Could it still be the master switch?
Yes, this is the most common failure scenario. The master switch has separate internal contacts for each window. If the contacts for just one window fail, only that window will stop responding to the driver's controls, while the others (and the local switch on the affected door) may continue to work perfectly.
Do I need to disconnect the battery to replace the window switch?
While not strictly required by all service manuals for a simple switch replacement, it is always a best practice to disconnect the negative terminal of the 12-volt battery before working on any part of your vehicle's electrical system. This prevents accidental short circuits.
My windows work, but the little lights in the switches are burned out. Do I have to replace the whole unit?
Yes. The backlighting for the switches is provided by small, integrated LEDs. These are not serviceable separately. If the illumination fails, the entire switch assembly must be replaced to restore it.
Will an aftermarket switch work with the 'auto up/down' feature?
Most higher-quality aftermarket switches from reputable brands like Dorman are designed to support all original functions, including auto up/down. However, some very cheap, unbranded switches may lack the more complex two-stage internal contacts required for this feature to work correctly, leading to frustration. A used OEM switch is a guaranteed way to retain this functionality.
Technical Specifications
OEM Part Numbers: 84513458 26218340
Connector: 24-pin female | Vehicle Position: Front Driver's Side (Left Hand Drive) | Functions: Controls all four windows, side mirrors, and window lock | Compatibility: For models without memory seats and with manual-folding mirrors.
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.
- Chevrolet Bolt EUV:
- Buick Regal: