My OnStar navigation no longer gives voice prompts for turns and such. Was working fine, radio mutes down but then no voice prompts play. Just started in middle of a drive. How do I get the audio voice prompt back. Onstar has reset and still doesn't work. Noticed it happened after making a call via bluetooth with cell. The audio system then linked to the phone (volume was only 1-6 levels like the phone). Turned the car off and the radio was fine but the onstar navigation no longer gave voice prompts. The bluetooth is completely off but the voice prompts didn't reset.

Audio System Muted ' Nissan Murano Forum

https://www.nissanmurano.org > ... > General Discussions
Jul 24, 2020 - Anyone have any suggestions as to how to "un mute"? ... quiet and a message pops up on the screen letting me know that "Audio is muted".
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Some how I muted my audio system. How do you unmute it?

https://www.fixya.com > ... > 2015 Nissan Rogue
Some how I muted my audio system. How do you unmute it? - Nissan 2015 Rogue question.

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  Audio system muted is displayed on my dash of my nissan 2017

  https://www.fixya.com > Forum > Radio Communications
  Some radios have phone buttons that mute the speakers so you can talk on the phone. If you have Onstar and no active subscription it can also mute the radio ...

2017 NissanConnect with Navigation Owner's Manual

https://owners.nissanusa.com > techpub > common
PDF
and Murano). OWNER'S MANUAL. For your safety, read carefully and keep in this vehicle. 2017 N ... Audio . Hands-Free Phone . NissanConnectSM Mobile Apps.

What system does it have ? Base or up level ,does it have a amp ? Do you know what a RPO code is ? Without testing no one could say for sure what the issue is . First off would need to know what system we are dealing with .
RPO Options
The entertainment system on this vehicle is configured with either a base or uplevel audio system. Both the base and uplevel audio systems contain a radio, antenna, and speakers.
The following shows the Enteratinment RPOs that are available for this vehicle:
• (UM7) AM/FM Stereo
• (U1C) AM/FM Stereo CD
• (US8) AM/FM Stereo, CD, MP3, RDS, EQ
• (US9) AM/FM Stereo, 6-Disc CD, MP3, RDS, EQ
• (UXQ4) Base Four Speaker
• (U79) Uplevel Four Speaker
• (WBM) Premium Audio
• (U2K) Digital Radio

Circuit Operation
Radio Power: The main radio power is supplied by the 10A RADIO (BATT1) fuse in the body control module (BCM). Radio switch-on power, 12 volts in ACC, RUN or RAP, is supplied by the 10A RADIO (ACC.) in the BCM.
Radio Grounds: The main radio ground provides a ground for the radio circuits. An additional braided ground strap provides a shielding radio case ground to reduce EMI noise. Both grounds are connected together inside the radio.
Radio Speaker Outputs: At zero volume, the plus (+) and minus (-) speaker outputs are both approximately 5-6 volts, measured to vehicle ground. If a plus or minus for any speaker output is shorted to ground or voltage, the radio circuitry will turn OFF all 4 speaker outputs for component protection. Above zero volume, the plus and minus change to create a voltage difference between each other, to drive the voice coil of the speaker.
Radio Park Lamp Input: The radio park lamp input allows the radio to sense when the vehicle parking lamps are ON. When the parking lamps are ON, this circuit goes to battery voltage, and the radio display back-lighting switches from full bright to the brightness level determined by the I/P illumination input.
Radio I/P Illumination Input: A pulse width modulated (PWM) voltage for instrument panel (I/P) illumination is provided to the radio I/P illumination input. The Radio uses this input to directly illuminate the radio buttons and adjust the radio display back-lighting when the park lamp input is ON.
Amplifier Power: The main amplifier power is provided by the 20A PREM AUDIO fuse in the instrument panel fuse block..
Amplifier Radio Speaker Inputs (WBM only): The radio speaker outputs, at a reduced output level for amplified systems, are the amplifier inputs. The amplifier boosts these inputs and outputs them to the vehicle speakers. Speaker plus and minus circuits from the radio change to create a voltage difference between each other. If one speaker plus or minus is open between the radio and the amplifier, the input to the amplifier is approximately half because only one of the circuits is changing. The speaker for that channel then operates at approximately only half the normal volume.
Amplifier Speaker Outputs (WBM only): At zero volume, the plus (+) and minus (-) speaker outputs are both approximately 5-6 volts, measured to vehicle ground. If a plus or minus for any speaker output is shorted to ground or voltage, the amplifier circuitry will turn OFF either the front outputs or rear outputs for component protection. Above zero volume, the plus and minus change to create a voltage difference between each other, to drive the voice coil of the speaker.
Amplifier Radio-On (WBM only): When the radio is ON, this circuit is pulled to 12 volts by the radio. The amplifier switches ON when this circuit is 12 volts and switches OFF when this signal is 0 volts.
Remote Radio Audio Signal Inputs (UE1 only): Audio output from the OnStar® communications module connects to the remote audio signal inputs of the radio. When the cellular telephone mute signal goes to 0 volts, the radio over-rides any other audio signal and uses these inputs as the source for output to the speakers.
Cellular Telephone Mute (UE1 only): The OnStar® communications module uses the cellular telephone mute signal circuit to over-ride the radio for OnStar® communication. When cellular telephone mute is not active, this circuit is held at 2 volts by the radio. When the cellular telephone mute signal is pulled to ground, the radio over-rides any other audio signal and uses the remote audio signals as the source for output to the speakers. If the radio was OFF when this circuit is pulled low, the radio will turn ON. Additionally, the radio fades the speakers to full front, adjusts the volume to an initial audible level, and sets an AutoTone designed for optimal use with OnStar®. When the mute signal is no longer pulled to ground, the radio returns to the mode it was in previously.

Hooking up a professional or factory scan tool that can read radio codes would be one of the first test's to do .
DTC B1025, B1035, B1045, or B1055 (w/out RPO WBM)
DTC B1025, B1035, B1045, or B1055 (w/ RPO WBM)
DTC B1030, B1040, B1050, or B1060 (w/ out RPO WBM)
DTC B1030, B1040, B1050, or B1060 (w/ RPO WBM)
DTC B1259
The following conditions are present for 250 ms or longer:
B1025 - B1055 01
One of the speaker positive output circuits is shorted to battery.
B1025 - B1055 02
The speaker positive output circuit is shorted to ground.
B1025 - B1055 04
The speaker positive output circuit is open.

Your best bet , take it to a qualified repair shop .

if you read or played disc for onstar would know it turns off /mutes radio

Could be that the potentiometer is not tracking properly. If that is not it, then it is the chip that controls the volume at fault.

check the manual. if that does not work google the problem. if that does not work go to a dealer and ask a salesman.

Could be mute controls for the telephone. The voice for the Navigation is adjusted separately from the radio volume. If any work was done on the vehicle, like a battery disconnect, then radio controls may need to be reset.

You need to toggle through the Menu to things like screen brightness for the Navigation.

You also have a speed sensitive radio and the volume controls could be affected by these settings.

first check ur fuses if their is any bad ones replace them and check and see if everythings working.if not disconnect ur battery for about 15 min then reconnect and then check everthing

This is an Internal problem in the radio. and the radio will need to be repaired Or have an aftermarket radio installed.Installing an aftermarket radio is usually the least expensive way to go unless you have onstar. than have the radio repaired since onstar works through the factory radio.

take it to dealer, you have warranty

Some radios have phone buttons that mute the speakers so you can talk on the phone. If you have Onstar and no active subscription it can also mute the radio thinking you are trying to talk to Onstar.