NHTSA ID Number: 10187274
Manufacturer Communication Number: T-SB-0146-19 Rev
TSB/Document Date: 2021-02-16
Summary
TSB: Some 2020 ? 2021 model year Tundra vehicles equipped with Audio Plus (version 1186) or earlier may exhibit one or more of the following conditions: ?WiFi intermittently inoperative. ?DTC B15DB present. ?Changing the Auto Relock Timer setting also changes the Remote 2-Press unlock setting. Some 2020 ? 2021 model year Tundra, RAV4, RAV4 Hybrid, Highlander, or Highlander Hybrid
vehicles equipped with Audio Plus (version 1210), or Premium Audio (version 1196) or earlier may exhibit one or more of the following conditions: ?Intermittent screen flashing. ?Intermittent ?Destination Assist Unavailable? pop-up message. ?Intermittent blank screen. ?Bluetooth® intermittently disconnects. ?Abnormal radio playback after Destination Assist Call. ??There is no playable data? pop-up message when using USB Audio. ?Unable to answer phone calls when using Apple CarPlay®. ?Clock displays the incorrect time. ?Intermittent rebooting. ??The software version doesn?t correspond? pop-up is intermittently displayed. ?Intermittent black screen when using projection navigation. ?Abnormal noise after ACC OFF/ON when using AM mode and high volume. ??Please connect USB? pop-up message when USB is already connected. A software update is now available to address these conditions. Follow the Software Update Procedure in this bulletin to update the software.
T-SB-0146-19
Rev2
October 16, 2019
Audio Head Unit Software Update (Denso-Ten)
Service
Category
Audio/Visual/Telematics
Section
Navigation/Multi Info Display
Market USA
Applicability
YEAR(S)
MODEL(S)
2020 - 2021
Highlander, Highlander HV,
RAV4, RAV4 HV, Tundra
ADDITIONAL INFORMATION
REVISION NOTICE
January 05, 2021 Rev2:
Applicability has been updated to include 2021 model year Highlander, Highlander Hybrid,
RAV4, RAV4 Hybrid, and Tundra vehicles.
March 19, 2020 Rev1:
The entire bulletin has been updated.
Any previous printed versions of this bulletin should be discarded.
Introduction
Some 2020 – 2021 model year Tundra vehicles equipped with Audio Plus (version 1186) or
earlier may exhibit one or more of the following conditions:
WiFi intermittently inoperative.
DTC B15DB present.
Changing the Auto Relock Timer setting also changes the Remote 2-Press unlock setting.
Some 2020 – 2021 model year Tundra, RAV4, RAV4 Hybrid, Highlander, or Highlander Hybrid
vehicles equipped with Audio Plus (version 1210), or Premium Audio (version 1196) or earlier
may exhibit one or more of the following conditions:
Intermittent screen flashing.
Intermittent “Destination Assist Unavailable” pop-up message.
Intermittent blank screen.
Bluetooth® intermittently disconnects.
Abnormal radio playback after Destination Assist Call.
“There is no playable data” pop-up message when using USB Audio.
Unable to answer phone calls when using Apple CarPlay®.
Clock displays the incorrect time.
Intermittent rebooting.
© 2021 Toyota Motor Sales, USA
Page 1 of 7
T-SB-0146-19
Rev2
October 16, 2019
Page 2 of 7
Audio Head Unit Software Update (Denso-Ten)
Introduction (continued)
“The software version doesn’t correspond” pop-up is intermittently displayed.
Intermittent black screen when using projection navigation.
Abnormal noise after ACC OFF/ON when using AM mode and high volume.
“Please connect USB” pop-up message when USB is already connected.
A software update is now available to address these conditions. Follow the Software Update
Procedure in this bulletin to update the software.
Warranty Information
OP CODE
EL1916
DESCRIPTION
Software Update
TIME
OFP
T1
T2
0.3
86140-0C350
86140-42A60
86140-42A70
86140-42A80
86140-42A90
86140-0R370
86140-0R380
86140-0R390
86140-0R400
86140-0E340
86140-0E550
86140-0E680
86140-0E570
87
74
APPLICABLE WARRANTY
This repair is covered under the Toyota Basic Warranty. This warranty is in effect for
36 months or 36,000 miles, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
© 2021 Toyota Motor Sales, USA
T-SB-0146-19
Rev2
October 16, 2019
Page 3 of 7
Audio Head Unit Software Update (Denso-Ten)
Software Update Information
MODEL
HEAD UNIT
SOFTWARE UPDATE FILE
Tundra, RAV4, RAV4 HV,
Highlander, Highlander HV
Audio Plus
17TDT1NA-CA31_1256.kwi
RAV4, RAV4 HV,
Highlander, Highlander HV
Premium Audio
17TDT2NA-CA31_1256.kwi
MULTIMEDIA SOFTWARE FILE DOWNLOAD
The multimedia software update file may be downloaded directly from this Service Bulletin by
clicking on the file name in the table above. Once downloaded, the file may be extracted (unzipped)
from the zip file and saved to a blank USB flash drive.
For USB flash drive requirements and download instructions, refer to TIS – Diagnostics –
Reprogramming – Reference Documents – Multimedia Software Download Instructions.
Software Update Procedure
1. Turn ON the ignition.
2. Press the Menu button on the radio
faceplate, then select Setup.
Figure 1.
3. Select General on the Setup screen.
Figure 2.
© 2021 Toyota Motor Sales, USA
T-SB-0146-19
Rev2
October 16, 2019
Page 4 of 7
Audio Head Unit Software Update (Denso-Ten)
Software Update Procedure (continued)
4. Scroll down and select
Software Update.
Figure 3.
5. Verify that the software version is
the same or earlier than indicated in
the Introduction.
Figure 4.
6. If the software needs to be updated, download the software from the Software Update
Information section onto an empty USB flash drive.
NOTE
If the vehicle has been turned OFF, repeat steps 1 – 5 to re-enter the Software Update screen.
7. Insert the prepared USB flash drive into the vehicle’s USB port.
8. Verify that the NEW software is up to date on the Software Update screen.
Table 1. Software Version Information
AUDIO PLUS
PREMIUM AUDIO
TYPE
Audio
CURRENT
NEW
CURRENT
NEW
1186
1210
1256
1191
1196
1256
© 2021 Toyota Motor Sales, USA
T-SB-0146-19
Rev2
October 16, 2019
Audio Head Unit Software Update (Denso-Ten)
Software Update Procedure (continued)
9. Select the Update Software button in the
lower right-hand corner.
Figure 5.
10. Select OK on the
Software Update Detail screen.
Figure 6.
11. Select Agree on the
Terms of Service screen.
Figure 7.
© 2021 Toyota Motor Sales, USA
Page 5 of 7
T-SB-0146-19
Rev2
October 16, 2019
Audio Head Unit Software Update (Denso-Ten)
Software Update Procedure (continued)
12. Select Yes on the “Would you like to start
the software update?” pop-up.
Figure 8.
13. Once the head unit begins installation, the
update will take approximately 10 minutes.
Figure 9.
NOTE
Do NOT turn OFF the ignition or ACC
BEFORE the software is ready
for updating.
Do NOT remove the USB flash drive until
instructed in step 17.
14. When the “The software is ready for
updating” screen appears, turn OFF
the ignition.
Figure 10.
© 2021 Toyota Motor Sales, USA
Page 6 of 7
T-SB-0146-19
Rev2
October 16, 2019
Page 7 of 7
Audio Head Unit Software Update (Denso-Ten)
Software Update Procedure (continued)
15. Turn the ignition ON to complete the software update.
16. AFTER turning the ignition ON, the
Software Update screen will
appear. Do NOT turn OFF the
ignition or remove the USB flash
drive. The head unit will reboot
during this time.
Figure 11.
17. Once the software update is
complete and the Home screen
appears, remove the USB
flash drive.
Figure 12.
18. Perform steps 3 – 6 to verify the
software version matches the
current software version
information table below.
Figure 13.
Table 2. Software Version Information
AUDIO PLUS
PREMIUM AUDIO
TYPE
Audio
CURRENT
NEW
CURRENT
NEW
1256
–
1256
–
© 2021 Toyota Motor Sales, USA
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TSB/Document ID: T-SB-0146-19 Rev
Replacement Service Bulletin Number:
MFR Communication Date: 2021-01-05
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SEAT BELTS
MFR Component System:
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