What to Do With Those Annoying Blank Buttons in Your Car

The automotive industry has a curious quirk: blank buttons. These plastic placeholders occupy space on dashboards and center consoles, serving as a subtle reminder of features not included in a particular vehicle trim. But these seemingly useless buttons don’t have to remain dormant. With a little ingenuity, owners can repurpose them for a variety of functions, from simple convenience features to sophisticated aftermarket integrations.

Mount a Knob or Switch to Control Accessories

One of the most practical uses for a blank button is to transform it into a dedicated control for an accessory. If you’ve installed an aftermarket subwoofer and amplifier, for example, a potentiometer can be mounted in place of the blank, providing precise control over the bass levels. Similarly, blank buttons can be used to control aftermarket ambient lighting systems, allowing you to adjust brightness or color without navigating infotainment menus. The key is to source a button or knob that blends seamlessly with the existing interior aesthetic. Painting or applying a custom sticker can help disguise its aftermarket origins.

Install an LED for Displaying Stats

For those inclined towards a more technical approach, a blank button can be repurposed to display status information via an LED. By drilling a small hole and wiring an LED to a relevant system, you can create a visual indicator for headlights, daytime running lights, or other features. One resourceful Redditor, as highlighted in a discussion about car modifications, even replaced blank buttons in a Volkswagen Jetta with illuminated rocker switches to indicate the status of the AC compressor, radiator fan and headlights – a particularly useful upgrade for a vehicle lacking a dedicated headlight-on warning light.

Install a Kill Switch

Security-conscious drivers can turn a blank button into a hidden kill switch, a simple yet effective deterrent against theft. Wiring the button to a critical circuit – such as the fuel pump, ignition system, or starter – prevents the car from starting or running when the switch is activated. By using an original-style button, the kill switch remains discreet, blending in with the surrounding controls and avoiding suspicion.

Aftermarket Tire Pressure Monitoring System

Integrating an aftermarket tire pressure monitoring system (TPMS) is another practical application for a blank button. Rather than awkwardly mounting the TPMS display on the dashboard, it can be neatly integrated into the center console by utilizing the space occupied by a blank button. Some TPMS units are even designed to retrofit into specific vehicle models, simplifying the installation process. For those with access to a 3D printer, custom brackets can be designed and printed to ensure a secure and flush fit.

OBD-Based Gauge or Display

For enthusiasts who enjoy monitoring vehicle performance, a blank button can accommodate a small OBD-based gauge or display. These devices provide real-time data on parameters such as oil pressure, coolant temperature, and turbo boost. While larger gauges may require more substantial modifications, smaller displays can be seamlessly integrated into the existing console. The EVOBD2, designed for Hyundai and Kia EVs, is one example of a compact OBD display that can be fitted into a blank button space.

Convert it into a USB Charging Port

In today’s connected world, USB charging ports are essential. If your vehicle lacks a conveniently located USB port, a blank button provides the perfect opportunity to add one. A 12V DC-to-5V DC converter, combined with a universal faceplate or a custom 3D-printed enclosure, can transform the blank button into a functional charging port. This provides a convenient and accessible power source for smartphones, tablets, and other devices.

Retrofit the Original Feature

Sometimes, the simplest solution is to restore the functionality that the blank button was originally intended for. Many manufacturers pre-wire vehicles for features that are optional upgrades, leaving the wiring harness hidden behind the blank button. By sourcing the correct switch or control module, you can often retrofit the original feature with relative ease. This can be a cost-effective way to add features like heated seats or fog lights to your vehicle.

Dress Them Up with Funny Stickers

For those seeking a quick and inexpensive solution, custom stickers offer a fun and creative way to personalize blank buttons. From humorous labels like “eject seat” and “invisibility” to more subtle designs, stickers can add a touch of personality to your car’s interior. While not a functional upgrade, stickers can certainly spark conversation and brighten up the cabin.

the possibilities for repurposing blank buttons are limited only by your imagination. Whether you’re seeking a practical upgrade, a security enhancement, or simply a way to personalize your vehicle, these often-overlooked spaces offer a surprising amount of potential. With a little creativity and effort, you can transform a blank button from a source of frustration into a valuable and functional addition to your car.