# Service bulletin ITB18\-041a

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: 10153548
- Published by NHTSA: 2019\-02\-25
- Manufacturer's number: ITB18\-041a
- Manufacturer's date: 2018\-12\-19
- NHTSA component: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

2019 QX50; AUDIO SYSTEM WILL NOT TURN ON AND/OR SCREENS FREEZE UP AFTER HANGING UP A PHONE CALL This bulletin has been amended. Please see Amendment History on the last page. Please discard previous versions of this bulletin.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10153548-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10153548-9999.pdf)

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

## Components

Electrical system, Equipment and accessories, Software

## Vehicles listed

- 2019 INFINITI QX50

## Other bulletins for the same vehicles and component

- [ITB19\-024B](/bulletins/10212027.md), 2022-05-20, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION; AIR BAGS. DTC B00A0\-00 STORED This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- [ITB18\-041b](/bulletins/10158422.md), 2019-04-15, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. 2019 QX50; AUDIO SYSTEM WILL NOT TURN ON AND/OR SCREENS FREEZE UP AFTER HANGING UP A PHONE CALL This bulletin has been amended. Please see Amendment History on the last page. Please discard previous versions of this bulletin.
- [ITB18\-041](/bulletins/10153547.md), 2019-02-25, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. 2019 QX50; AUDIO SYSTEM WILL NOT TURN ON AND/OR SCREENS FREEZE UP AFTER HANGING UP A PHONE CALL IF YOU CONFIRM There is no audio, and the audio controls do not turn the radio/audio ON. and/or Both screens freeze up after hanging up a phone call. \- The phone call was initiated with Voice Recognition while the phone menu was displayed on the upper screen. NOTE: These conditions can be temporarily resolved by pressing and holding down the Volume/Audio ON/OFF button for 5\-10 seconds. ACTION 1. Refer to page 4, step 8 in the SERVICE PROCEDURE to confirm an update applies to the Display Control Unit \(DCU\) of the vehicle being worked on. \- Confirmation is determined by comparing the DCU part number with those listed in Table A on page 4. 2. If this bulletin applies, update the DCU software. \- See REQUIRED SPECIAL TOOL on page 2. NOTE: The updated software resolves the items above along with improving software stability.
- [ITB12\-011k](/bulletins/10136647.md), 2018-05-14, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. TELEMATICS SERVICE INFORMATION This bulletin has been amended. Changes have been made throughout. It is necessary to read the revised procedure\(s\) in entirety to properly perform the action\(s\). Please discard previous versions of this bulletin.

JSON: [/v1/bulletins/10153548](/v1/bulletins/10153548)

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