Matrix Smartphone Pairing Issue

It sounds like you are experiencing an inconvenience with the multimedia system in your Toyota Matrix. The fact that your smartphone is unable to connect, coupled with an error code being stored in the memory, does suggest a potential issue with the device pairing process. Have you attempted to delete all previous pairings from the system and then re-initiate the pairing process? Also, can you confirm that your phone's Bluetooth is discoverable and that you are following the correct procedure as outlined in your owner's manual?

Yes, I've tried deleting all the old pairings and starting from scratch multiple times. My phone's definitely discoverable, and I'm pretty sure I'm following the manual's instructions correctly. I've paired devices with this car before without any issues. Is there anything specific I should be looking for in the error memory, even without a detailed code? Maybe a specific keyword or something?

Given that you've already attempted the standard troubleshooting steps without success, and considering that there is an error stored in the system memory, it is quite possible that the issue lies beyond a simple pairing problem. While it is difficult to diagnose remotely without the specific error code, the fact that the system is storing an error indicates that a more in-depth diagnostic procedure may be necessary. Therefore, to avoid further complications, I must suggest you visit a qualified workshop to resolve the error.

Thanks for the advice. I took it to a local shop, and you were right – it wasn't a simple pairing issue. Turns out there was a software glitch in the head unit. They reflashed it, and everything's working perfectly now. The repair cost me 45€, which wasn't too bad. Appreciate the input!