9" MK4 Multimedia Headunit for Toyota LandCruiser 70 Series (2009-2026)
View product: 9" MK4 Multimedia Headunit for Toyota LandCruiser 70 Series (2009-2026)Use this article if…
- Your phone pairs but media / nav audio is silent, so it's Bluetooth routing, not “won’t pair.”
- If pairing fails → Phone pairing. If all sources are silent → No audio from speakers.
Problem
- Your Bluetooth pairs but music or nav audio is silent.
Symptoms
- Your phone shows connected for calls/media, but music or Maps voice is silent.
- You only get sound while CarPlay/Android Auto is running, not on plain Bluetooth.
Cause
- Media audio (A2DP-style playback) is switched off on your phone’s Bluetooth profile for the MK4.
- Media volume is at zero on your phone or the MK4, or you've got a focus or do-not-disturb mode blocking playback.
- A CarPlay or Android Auto session is claiming the audio while you still see plain Bluetooth connected.
- Your phone generation and the MK4 have a Bluetooth stack or firmware mismatch. That's an edge case.
Fix Step-by-step
- On your phone, open Bluetooth, tap the MK4, then turn on Media audio (Android) or the equivalent.
- Disconnect CarPlay/Android Auto for the test, then play a local MP3 over Bluetooth only.
- Raise the volume on both your phone and the headunit, then exit any focus mode that mutes media.
- Forget the pairing on your phone and on the MK4, reboot both, then pair clean.
- If you still hear nothing on all sources, go to No sound from speakers.
Notes
- If you can't pair: My phone won’t pair
- If you hear nothing on any source: No sound from speakers
- For wireless projection: CarPlay disconnects, Android Auto not connecting, wireless guide
Still stuck? Send us these photos
- Phone: your exact model and OS version, for example iOS or Android with the release number.
- Screenshot: the Bluetooth device details for the MK4 on your phone, showing the Media audio and phone audio toggles (Android) or the equivalent on iPhone.
- Confirm: you still get normal playback from FM or USB on the MK4 while Bluetooth media stays silent.
- Screenshot (if available): the MK4 Bluetooth paired-device screen during failed playback.
- Vehicle: your model and year for logs context.