Play custom Boombox sounds on your Tesla

Tesla's Boombox lets your car broadcast custom sounds through its external speaker. Load your own clips onto your K3Y, plug it in, and pick them from the touchscreen — setup takes just a few minutes.

How it works

Tesla reads custom Boombox sounds from a USB drive. You drop short audio clips into a folder named Boombox on the drive, and the car lets you choose them in the Toybox. Because your K3Y is already in the USB port, you can use it as that drive — your dashcam footage stays untouched in its own folder.

Before you start

First, prepare your K3Y on a computer, then choose your sound from the Tesla touchscreen:

• Find or make short audio clips in .wav or .mp3 format — each file must be under 1 MB.
• Open your K3Y drive and create a folder named exactly Boombox in the root.
• Copy up to 5 clips into it. Tesla lists the first five alphabetically, so name them in the order you want. This sits alongside your dashcam folder, so recordings keep working.

How to set it up

1. Plug your K3Y into the front USB port

   With your Boombox clips loaded, insert the K3Y into the car's front USB port. This is the same port your dashcam uses.

   

2. Tap the apps folder in the bottom dock

   On the Tesla touchscreen, tap the apps folder in the bottom dock to open your apps drawer.

   

   
   

3. Open Toybox

   In the apps drawer, tap Toybox to open Tesla's collection of fun extras.

   

   
   

4. Open Boombox and pick your sound

   In the Toybox, tap Boombox. Your custom clips appear in the sound list — select one to set it as the sound your car plays through its external speaker.

   Toybox›Boombox
   

Good to know

• Name the folder exactly. It must be Boombox in the root of the drive, or the car won't find your sounds.
• Keep clips small. Each file must be under 1 MB. Trimming to a couple of seconds and mixing down to mono helps you stay under the limit.
• Only the first five. You can store more, but Tesla only lists the first five files alphabetically — name them to control the order.
• Format matters. Format the drive as exFAT or FAT32 (NTFS isn't supported), and use .wav or .mp3 files.
• Dashcam keeps working. Boombox sounds live in their own folder, separate from your TeslaCam recordings.

Where to find sounds

Don't have a clip yet? These libraries offer free, royalty-free sounds you can download and use:

Look for something short, and download it as a .wav or .mp3 under 1 MB — then drop up to five into the Boombox folder on your K3Y.