# Service bulletin T\-TT\-0517\-18\_Rev

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.

- Type: Service bulletin
- NHTSA id: 10164899
- Published by NHTSA: 2019\-09\-16
- Manufacturer's number: T\-TT\-0517\-18\_Rev
- Manufacturer's date: 2019\-08\-12
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

TT: Voice navigation prompts and feedback beeps are inoperative after starting the engine. This condition only occurs on Platinum grade vehicles.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164899-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164899-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Software

## Vehicles listed

- 2019 TOYOTA HIGHLANDER
- 2019 TOYOTA HIGHLANDER HYBRID

## Other bulletins for the same vehicles and component

- [T\-TT\-0600\-20 Rev](/bulletins/10184555.md), 2020-12-21, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI. TT: Some customers may experience echoing on the line calling the vehicle when using Bluetooth Hands Free. This is caused by the phone Hands Free volume being too low. These settings may need to be reapplied any time the phone is paired to a new head unit, a phone update is applied, or the phone is un\-paired and re\-paired.

JSON: [/v1/bulletins/10164899](/v1/bulletins/10164899)

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