2018-2024 Toyota Head Unit Data Download Instructions TSB

Toyota has issued Tech Tip T-TT-0780-25, providing detailed instructions for technicians to download Multimedia Recorder (MMR) data from the head unit of various 2018-2024 Toyota models. This procedure is crucial for the early detection and resolution of audio-related concerns. The TSB specifies that these instructions are to be used only when requested by Field Technical Specialists (FTS) or Field Product Engineers (FPE) to gather diagnostic information.

The Multimedia Recorder (MMR) system captures data related to the head unit's operation. This data is stored internally and can be extracted to help identify the root cause of intermittent or complex issues. The process involves accessing a hidden service menu and using a USB drive to transfer the recorded information.

Symptoms

This procedure for a Toyota head unit data download is applicable for diagnosing a range of audio and telematics issues. These include general audio concerns, problems with rebooting, screen malfunctions, connectivity issues, and communication errors. It also covers specific problems related to settings, Apple CarPlay, Android Auto, and Bluetooth connectivity. By analyzing the MMR data, technicians can gain insights into the conditions leading to these symptoms.

Important Warnings for Owners

Owners should be aware of specific conditions that can affect MMR data collection:

• "If volume/power knob has been used to restart the head unit, MMR data will be lost. Do not restart the head unit if you are trying to capture MMR data for a concern."
• If a concern has been experienced, make sure to record the date and time of the occurrence and provide this along with the MMR data.
• "If MMR is pulled, a report is required, but please DO NOT attach MMR data to DPR/FTR." Similarly, "Please DO NOT attach MMR data to field report."
• MMR is a quality investigation tool, not a diagnostic tool for case-by-case support.

Required Tools or Parts

To perform the Multimedia Recorder (MMR) data download, technicians will need an empty USB flash drive with a capacity between 4GB and 32GB, formatted to FAT32. For an alternate method of accessing the diagnostic menu, the Toyota Global Techstream (GTS+) diagnostic tool is required.

MMR Data Download Procedure Summary

The process for a Toyota head unit data download involves several steps performed by a technician:

1. With the ignition ON and the vehicle safely stopped, press and hold the "MENU" button on the faceplate while cycling the headlight switch from off to on three times. Alternatively, use GTS+ to navigate to Body Electrical > Navigation System > Utility > Diagnostic Mode.
2. From the Service Menu, select "Failure Diagnosis".
3. Then, select "Diagnosis Recorder".
4. Deselect "Recording ON/OFF" to turn it white/grey, indicating it's off.
5. Press and hold a hidden button for up to 30 seconds.
6. Insert the FAT32 formatted USB drive into the vehicle's USB port.
7. Press and hold the "output" button for up to 10 seconds.
8. On the pop-up screen, select "Yes".
9. Select the "OK" button on the next pop-up screen.
10. Wait for the files to copy to the USB drive.
11. Once copying is complete, select the "OK" button.
12. Select the "BACK" button, then turn "Recording ON/OFF" back to the ON position (green).
13. Turn the ignition OFF. Once the USB light turns off, remove the USB drive.
14. Confirm that the MMR file (17DISP_DREC.zip) was saved correctly.
15. The MMR zip file can then be uploaded to a TAS case or shared with FTS for analysis, including the report number and timestamp.

Owner Action

If you are experiencing audio, connectivity, or screen issues with your 2018-2024 Toyota vehicle, especially those that might require a Toyota head unit data download, it is recommended to visit an authorized Toyota dealership. Provide your technician with specific details about the concern, including the date and time it occurred. This information is critical for them to effectively utilize the MMR data for diagnosis and resolution.

NHTSA ID: 11019332