Tesla Lock Sound Not Working? 7 LockChime.wav Fixes

Tesla lock sound not working? The fix is usually one exact detail: LockChime.wav must be a 44.1kHz/16-bit WAV inside Boombox/LockChime.wav on a FAT32 or exFAT USB drive, then selected under Toybox → Boombox → Lock Sound (choose USB) or reselected in Sentry settings after an update.

Quick Answer: LockChime.wav Not Working

Check these in order:

1. File name is exactly LockChime.wav: capital L, capital C, real WAV file.
2. Folder path is exactly Boombox/LockChime.wav at the USB root.
3. WAV format is 44.1kHz, 16-bit PCM.
4. USB format is FAT32 or exFAT, not NTFS or APFS.
5. Tesla menu is set to Toybox → Boombox → Lock Sound, then choose USB.
6. Sentry settings still point to the USB sound after any software update.
7. USB is in a data port, then remove and reinsert it before testing again.

Need a known-good file before you troubleshoot further? Download one from the Tesla lock sounds library or the Tesla lock sounds download guide, then test with that file first. If your sound plays but is too quiet after a recent update, use the Tesla lock sound too quiet fix. For the full file spec, see the LockChime.wav reference page.

1. Sound Won't Play

The Problem: Your custom LockChime.wav isn't playing when you lock/unlock.

The Fix:

• The file MUST be named exactly LockChime.wav (case-sensitive: not lockchime.wav, Lockchime.WAV, or LockChime.mp3)
• Check file format: WAV, 44.1kHz, 16-bit PCM
• Ensure Sentry Mode is enabled in your Tesla settings
• Try a different USB port
• Make sure the file isn't too large (under 1MB recommended; see duration limits explained for details)

2. Sound is Too Quiet

The Problem: You can barely hear your lock sound.

The Fix:

• Go to Controls → Safety → External Speaker and turn the volume slider up. This is the fix in the majority of cases
• If the file itself is the problem, use the free audio converter to change its level. Tesla does not publish a volume target.
• Avoid heavily compressed audio (MP3-sourced files often have low headroom)
• Test with a known-good file from the Tesla lock sound library

Full volume troubleshooting: Tesla lock sound volume: louder or quieter | Tesla lock sound too quiet: all causes

3. Sound is Distorted

The Problem: Your sound plays but sounds crackly or distorted.

The Fix:

• Lower the level with the converter's Quiet preset or negative gain
• Remove excessive bass frequencies
• Re-export at 16-bit (not 24-bit)
• Check original file quality

4. USB Not Recognized

The Problem: Tesla doesn't see your USB drive.

The Fix:

• Format to FAT32 or exFAT
• Try a different USB drive
• Try another USB port that carries data
• Check for physical damage

5. Wrong Sound Playing

The Problem: The default sound plays instead of your custom one.

The Fix:

• Verify folder structure: Boombox/LockChime.wav
• Check for duplicate files
• Re-select Toybox → Boombox → Lock Sound, then choose USB in settings
• Clear cache by rebooting Tesla

6. Sound Stopped Working After Update

The Problem: Your sound worked before but stopped after a software update.

The Fix:

• Re-select your custom sound in Toybox → Boombox → Lock Sound, then choose USB
• Re-upload the sound file
• Check for new file requirements
• Ensure sound meets latest specs

This is a common issue. We wrote a full guide covering exactly why updates reset your sound and how to prevent it: Tesla Lock Sound Resets After Update: 5 Fixes. On firmware 2026.9.1 specifically? See Tesla Lock Sound Muted After 2026.9.1: Fix.

7. Sound Plays at Wrong Times

The Problem: Your lock sound plays when it shouldn't.

The Fix:

• Review Sentry Mode settings
• Check app notification settings
• Verify sound isn't set for multiple events
• Reset to default and reconfigure

Still Having Issues?

If none of these solutions work:

1. Restart the touchscreen: in Park, hold both steering wheel scroll buttons until the screen turns black (Tesla's owner's manual)
2. Check your model's owner's manual for model-specific steps
3. Contact us for personalized help

FAQ

Why won't my LockChime.wav play on my Tesla?

The most common reasons are: the filename isn't exactly LockChime.wav (case-sensitive, so lockchime.wav won't work), the file isn't inside a folder named Boombox on the root of the USB drive, the USB isn't formatted as FAT32 or exFAT, or the Boombox lock sound source is still set to Default instead of USB. Check these four things first and you'll solve most cases.

Why is my Tesla lock chime not working?

If the Tesla lock chime is not working after you picked a custom sound, start with the USB path. Tesla needs Boombox/LockChime.wav, a FAT32 or exFAT drive, and USB chosen in Toybox → Boombox → Lock Sound. If the file came from another site or an MP3 converter, test with a known-good LockChime.wav download before changing Tesla settings.

Does the folder name "Boombox" need to be capitalized?

Yes. Tesla's software is case-sensitive on this. The folder must be named Boombox (capital B, no spaces). boombox, BOOMBOX, or boom box will not be recognized. Same applies to the file: LockChime.wav with a capital L and C.

What format does my Tesla lock sound need to be?

WAV format, 44.1kHz sample rate, 16-bit PCM. The file must be named exactly LockChime.wav. MP3, AAC, and other formats won't work. If your sound is in a different format, use our free audio converter to convert it automatically, or skip conversion entirely and download a ready-to-use sound.

How do I know if my USB drive is compatible with Tesla?

Format it as FAT32 (preferred) or exFAT. NTFS is not supported. Drives larger than 256GB can sometimes cause recognition issues, so use a 32GB or 64GB drive if you have problems. Drives formatted on Mac should use MS-DOS (FAT) format, which is equivalent to FAT32.

My lock sound stopped working after a Tesla software update: what do I do?

After updates, Tesla sometimes resets the custom sound selection. Go to Toybox → Boombox → Lock Sound and re-select your sound from the USB drive. Make sure the USB is still inserted. In some cases, removing and reinserting the USB, then reselecting, is required to re-establish the connection.

Browse our Tesla lock sound library: 2,290+ free WAVs formatted for all Tesla models. Or jump to sounds curated for your specific vehicle: Model 3, Model Y, Model S, Model X, Cybertruck. Once your sound is working, browse our 15 best Tesla lock sounds for 2026 for inspiration, or see how to get more Tesla lock sounds for the full guide on building your collection. Confused about the Lock Chime setting in your Tesla's menu? Our LockChime.wav reference page explains exactly what it is and how to customize it. Don't see the Boombox menu at all? See how to get custom lock sounds in any region: the USB lock chime method works even without the external speaker. Starting from scratch? Our step-by-step install guide walks you through the full setup, and our guide to changing your Tesla lock sound covers every option available.