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Service bulletins for the 2020 Toyota Highlander

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

236 on file from NHTSA, as of 2026-10-19.

About B15DB on the 2020 Toyota Highlander: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: B15DB are shown. Show all

Bulletins, newest first
T-SB-0019-21 Rev2021-12-13. Service bulletin. EQUIPMENT:ELECTRICAL. TSB: Some 2020 model year vehicles equipped with Audio Plus (version 1186) or earlier may exhibit one or more of the following conditions: ?WiFi intermittently inoperative. ?DTC (Diagnostic Trouble Code) B15DB present. ?Changing the Auto Relock Timer setting also changes the Remote 2-Press unlock setting. Some 2020 ? 2021 model year 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. Some 2020 ? 2021 model year vehicles equipped with Audio Plus (version 1256), or Premium Audio (version 1256) or earlier may exhibit one or more of the following conditions: ?Navigation intermittently reverses its travel. ?Android AutoTM inoperative. ?Audio mode is set to ?Off? after disconnecting USB while using Apple CarPlay®. ?Intermittent black screen flash when connecting Bluetooth®. ?When the MAP button is pressed, a ?Navi app is not installed? pop-up is displayed. ?Intermittent black map screen on home screen. ?Bluetooth® intermittently disconnects. ?No outgoing voice when using Bluetooth® Handsfree for phone call. ?Bluetooth® Now Playing List song selection is slow. ?Unable to transfer phone contacts when using Bluetooth®.
T-SB-0019-21 Rev2021-09-13. Service bulletin. EQUIPMENT:ELECTRICAL. TSB: Some 2020 model year vehicles equipped with Audio Plus (version 1186) or earlier may exhibit one or more of the following conditions: ?WiFi intermittently inoperative. ?DTC (Diagnostic Trouble Code) B15DB present. ?Changing the Auto Relock Timer setting also changes the Remote 2-Press unlock setting. Some 2020 ? 2021 model year 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. Some 2020 ? 2021 model year vehicles equipped with Audio Plus (version 1256), or Premium Audio (version 1256) or earlier may exhibit one or more of the following conditions: ?Navigation intermittently reverses its travel. ?Android AutoTM inoperative. ?Audio mode is set to ?Off? after disconnecting USB while using Apple CarPlay®. ?Intermittent black screen flash when connecting Bluetooth®. ?When the MAP button is pressed, a ?Navi app is not installed? pop-up is displayed. ?Intermittent black map screen on home screen. ?Bluetooth® intermittently disconnects. ?No outgoing voice when using Bluetooth® Handsfree for phone call. ?Bluetooth® Now Playing List song selection is slow. ?Unable to transfer phone contacts when using Bluetooth®.
T-SB-0146-19 Rev2021-02-16. Service bulletin. SEAT BELTS; BACK OVER PREVENTION. 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_Rev2020-04-20. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Some 2020 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 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.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.