LockChime.wav converter
Updated
Turn your own recording, a voice memo or a sound effect you're allowed to use into a lock chime your Tesla will actually play. Drop in an MP3, M4A or WAV, pick the moment you want, and download a LockChime.wav that is the right format, length and size. It runs in your browser, so the audio never leaves your device.
What the converter does
- Cuts a 4.9-second window from wherever you choose, inside Tesla's 5-second limit.
- Converts it to a 16-bit WAV at 44.1 kHz, keeping stereo if the source is stereo, and well under 1 MB.
- Trims silence at the start and end, so the sound plays the moment the car locks.
- Sets the loudest moment to -1 dBFS and adds a 60 ms fade at the end, so a clip cut mid-sound ends cleanly instead of clicking.
- Saves the file as LockChime.wav, the exact name the car looks for.
Renaming an MP3 to .wav does not work: the car needs a real WAV file. Convert audio you have the right to use, such as your own recordings or sounds licensed for it.
Put it on your Tesla
Step 1
Drop in your audio
Choose an MP3, M4A or WAV. It is decoded in your browser and never uploaded.
Step 2
Pick where the chime starts
Slide to the moment you want; the chime is the next 4.9 seconds. Play the preview to hear exactly what the car will play.
Step 3
Download LockChime.wav
The file downloads already named and sized for the car.
Step 4
Copy it to a USB drive
Put LockChime.wav at the top level of a USB drive, not inside any folder. Format the drive exFAT, FAT32, ext3 or ext4 (not NTFS).
Step 5
Use the right USB port
Plug the drive into a front data port. On many cars built since late 2021 the console ports only charge, so use the glovebox port.
Step 6
Turn on Lock Sound
In the car, open Toybox > Boombox, turn on Lock Sound and choose USB.
Lock Sound plays through the external Pedestrian Warning System speaker, which most Teslas built since late 2019 have. Lock chimes load by USB only; the Tesla app upload is for wraps. The full guide to changing your Tesla lock sound covers formatting the drive and every fix when it will not play.
Lock chime questions
How do I turn an MP3 into a Tesla lock chime?
Use FrunkLab's free LockChime converter. Drop in an MP3, M4A, or WAV, pick where the clip starts, and it converts the sound in your browser to a 44.1 kHz WAV under 5 seconds and under 1 MB, with a short fade so it ends cleanly. It downloads already named LockChime.wav, ready for the top level of a USB drive. Renaming an MP3 to .wav does not work, because the car needs a real WAV file.
What format does a Tesla lock chime need?
A WAV file named LockChime.wav, 5 seconds or shorter and under 1 MB. It goes at the top level of a USB drive, not inside any folder, and the drive must be exFAT, FAT32, ext3 or ext4 (not NTFS). Plug the drive into a front data port, then open Toybox > Boombox, turn on Lock Sound and choose USB. Every sound in FrunkLab's library and every AI-generated chime already meets these limits.
Why won't my Tesla play my custom lock sound?
Almost always one of six things: the file is not named exactly LockChime.wav, it sits inside a folder instead of the top level of the USB drive, it is longer than 5 seconds or bigger than 1 MB, it is not a real WAV (an MP3 renamed to .wav will not play), the drive is formatted NTFS instead of exFAT, FAT32, ext3 or ext4, or the drive is in a port that only charges. On many cars built since late 2021 the console ports only charge, so use the glovebox port. Also check the hardware: Lock Sound plays through the external Pedestrian Warning System speaker, which most Teslas built since late 2019 have. With the drive in, open Toybox > Boombox, turn on Lock Sound and choose USB. Every download from FrunkLab already has the right name, length, size, and format.
How do I change my Tesla lock chime?
Copy LockChime.wav to the top level of a USB drive, plug it into a front data port, then open Toybox > Boombox, turn on Lock Sound and choose USB. The file must be a WAV under 5 seconds and under 1 MB. Unlike wraps, lock chimes still load by USB only. FrunkLab's lock sound library has nearly 400 ready-made chimes, plus an AI generator that turns a text description into a Tesla-ready WAV.
No sound in mind?
Pick from the free lock sound library, every file already Tesla-ready, or describe a jingle or a spoken line and let the AI lock chime generator make one. Designing a wrap to match? The Tesla wrap file checker makes sure Paint Shop takes it.