NHTSA ID Number: 11019329
Manufacturer Communication Number: L-TT-0341-25
TSB/Document Date: 2025-06-06
Summary
To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by FTS and/or FPE.
Tech Tip L-TT-0341-25
Subject
April 02, 2025
Market
Multimedia Recorder (MMR) Download Instructions
Service Category
Section
Audio/Visual/Telematics
Audio/Video
USA
Applicability
All Applicable Models - 17CY Audio
APPLICABLE VEHICLES
2019-2022
2018-2022
2018-2021
2019-2022
2018-2021
2018-2025
2018-2025
2022-2025
2020-2025
2020-2022
2018-2021
UX250H
LS500
NX300
ES350
LX570
RC350
RC F
IS500
IS300
RX350
NX300H
2020-2025
2020-2022
2019-2022
2021-2022
2021-2023
2018-2023
2019-2022
2018-2023
2022-2023
2018-2022
2018-2025
IS350
RX450H
ES300H
ES250
LC500C
LC500H
UX200
LC500
GX460
LS500H
RC300
CONDITION
To assist with the early detection and early resolution of audio related concerns you may be asked to
recover MMR data from the head unit.
The following steps are instructions on how to retrieve the data from the system and are only to be
used when requested by FTS and/or FPE.
Important Notes
• An empty 4GB to 32GB flash drive in format FAT32 is required to pull MMR logs.
• MMR is a quality investigation tool not a diagnostic tool for case-by-case support.
• MMR data is saved to the internal memory of the head unit when the ignition is cycled to off. Saving
this data may require up to one minute with ignition off.
• If you just experienced a concern and the ignition has not been switched off, you will need to cycle
the key off and back on one time (in a safe location) before attempting to retrieve the MMR data.
• For Apple CarPlay, Android Auto, and Bluetooth concerns, the MMR data needs to be pulled, or
ignition cycled off (in a safe location), shortly after the concern is duplicated (~5min) to increase
chances of relevant MMR logs to be saved in HU internal memory. If longer time passes after a
concern is duplicated (5+ min since duplication or 30+ min after ignition is cycled off/on), there is a risk
that the MMR log will have been overwritten. In this case, MMR may still be pulled, but it will be less
likely to contain relevant logs for analysis.
• For other type of concerns, like rebooting, screen, connectivity, communication, settings, etc.
MMR may contain relevant logs for a longer period (approximately 5 days of average driving),
depending on driving habits.
• 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.
• MMR can be uploaded to a TAS case or shared with FTS to be uploaded to OneDrive.
• If MMR is pulled, a report is required, but please DO NOT attach MMR data to DPR/FTR.
Expires on
04/02/2026
© 2024, Lexus
, a Division of Toyota Motor Sales, USA
Ver. 5.1 01/01/2024 L
Submitted to NHTSA on 05/07/2025
Page 1 of 5
Tech Tip L-TT-0341-25
April 02, 2025
Subject
Market
Multimedia Recorder (MMR) Download Instructions
USA
Applicability
All Applicable Models - 17CY Audio
RECOMMENDATIONS
1. With ignition ON and vehicle stopped in a safe location, press and hold the “MENU” button on the
faceplate while cycling the headlight switch from off to on three times.
Alternate Method: Using GTS+, enter the following menus:
Body Electrical > Navigation System > Utility > Diagnostic Mode
Diagnostic mode will start, and the "Service Menu" screen will be displayed.
2. Select “Failure Diagnosis”.
3. Select “Diagnosis Recorder”.
4. Deselect “Recording ON/OFF” (it should be green, and it needs to be white/grey to continue this
process).
Expires on
04/02/2026
© 2024, Lexus, a Division of Toyota Motor Sales, USA
Ver. 5.1 01/01/2024 L
Submitted to NHTSA on 05/07/2025
Page 2 of 5
Tech Tip L-TT-0341-25
April 02, 2025
Subject
Market
Multimedia Recorder (MMR) Download Instructions
USA
Applicability
All Applicable Models - 17CY Audio
5. Press and hold the hidden button for up to 30 seconds.
6. Insert a blank 4GB to 32GB USB drive into the vehicle’s USB port (FAT32 format is required).
7. Press and hold the “output” button for up to 10 seconds.
8. Select the “Yes” button on the pop-up screen.
Expires on
04/02/2026
© 2024, Lexus, a Division of Toyota Motor Sales, USA
Ver. 5.1 01/01/2024 L
Submitted to NHTSA on 05/07/2025
Page 3 of 5
Tech Tip L-TT-0341-25
April 02, 2025
Subject
Market
Multimedia Recorder (MMR) Download Instructions
USA
Applicability
All Applicable Models - 17CY Audio
9. Select the “OK” button on the next pop-up screen.
10. Wait for the files to copy to the USB drive.
11. Once the files have transferred, select the “OK” button.
Expires on
04/02/2026
© 2024, Lexus, a Division of Toyota Motor Sales, USA
Ver. 5.1 01/01/2024 L
Submitted to NHTSA on 05/07/2025
Page 4 of 5
Tech Tip L-TT-0341-25
April 02, 2025
Subject
Market
Multimedia Recorder (MMR) Download Instructions
USA
Applicability
All Applicable Models - 17CY Audio
12. Select the “BACK” button in the upper right-hand corner, then turn “Recording ON/OFF” back to
the ON position (should be green to enable MMR recording).
13. Turn the ignition OFF. Once the light on the USB turns off, the USB can be removed.
14. Confirm MMR (17DISP_DREC.zip) was saved to USB properly.
15. Share MMR zip file with FTS to upload to OneDrive (include report number and timestamp).
FTS can then share with CQS PE or requesting party.
MMR zip file can also be uploaded to TAS case.
Please DO NOT attach MMR data to field report.
LINK REFERENCES
This Tech Tip does not contain any link references
Expires on
04/02/2026
© 2024, Lexus, a Division of Toyota Motor Sales, USA
Ver. 5.1 01/01/2024 L
Submitted to NHTSA on 05/07/2025
Page 5 of 5
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TSB/Document ID: L-TT-0341-25
Replacement Service Bulletin Number:
MFR Communication Date: 2025-04-02
MFR Internal Campaign ID/Software Version: L-TT-0341-25
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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