Subaru BRZ Infotainment Bluetooth Disconnect & Freezing
The 2017-2020 Subaru BRZ Starlink infotainment system frequently drops Bluetooth connections or freezes during media playback and call synchronization.
Last updated: 2026-05-15
What goes wrong
Drivers experience sudden disconnection of their mobile devices from the Starlink system. This typically occurs within the first 10 minutes of driving, often triggered by the system attempting to sync the contact list or handle a high-bitrate audio stream. In some cases, the entire head unit becomes unresponsive until the car is power-cycled.
Symptoms to watch for
- Frequent 'Bluetooth Disconnected' pop-ups while driving.
- Audio stuttering or 'skipping' during music playback.
- Head unit freezes or reboots when downloading phone contacts.
- Phone connects for calls but fails to play audio/media.
- Laggy response when skipping tracks via steering wheel controls.
Root cause
Incompatibility between older Starlink firmware versions and modern smartphone Bluetooth protocols (BLE/A2DP), coupled with memory buffer overflows during contact synchronization.
Buy time with these
- • Perform a 'Hard Reset' by holding the volume/power knob for 10-15 seconds.
- • Clear all paired devices from both the car and the smartphone.
- • Ensure smartphone OS is updated to the latest version.
- • Disable 'Contact Syncing' in the phone's Bluetooth settings for the BRZ connection.
Permanent fix
- Update head unit firmware to the latest version via Subaru Service Tool (Flash Drive).
- Replacement of the Starlink head unit if internal hardware failure is detected.
Related recalls / TSBs
FAQ
What causes subaru brz infotainment bluetooth disconnect & freezing?
Incompatibility between older Starlink firmware versions and modern smartphone Bluetooth protocols (BLE/A2DP), coupled with memory buffer overflows during contact synchronization.
How much does it cost to fix?
National average $0–$1,200. Software updates are often covered under the 3-year/36,000-mile basic warranty. Out-of-warranty head unit replacement is expensive.
Is this a DIY repair?
Difficulty 2/5. Update head unit firmware to the latest version via Subaru Service Tool (Flash Drive).
What are the symptoms?
Frequent 'Bluetooth Disconnected' pop-ups while driving.; Audio stuttering or 'skipping' during music playback.; Head unit freezes or reboots when downloading phone contacts.; Phone connects for calls but fails to play audio/media.; Laggy response when skipping tracks via steering wheel controls.