No Sound from Entertainment System

[NickInTheValley]

The other day the audio system quit producing any kind of sound. It turns on and off. I can hit the mute button and see the visual cue that it's muted. However when I turn the volume knob or use the volume controls on the steering wheel nothing happens. I don't even get an indication on the head unit that I am adjusting the volume. I checked the fuses and every appears fine.

Anyone run in to this? Next stop is the dealer I guess but I don't want to wait forever for them to fix it if I can do something easy. OH. No pending Sync updates either.

-Nick
2021 Ford Expedition Max 4x4 Stealth Edition

 

[NickInTheValley]

One other odd piece of info. I just looked at speaker balance/fade and it's stuck at front right. If I move it, it moves itself back.

 

[Rob6805]

The other day the audio system quit producing any kind of sound. It turns on and off. I can hit the mute button and see the visual cue that it's muted. However when I turn the volume knob or use the volume controls on the steering wheel nothing happens. I don't even get an indication on the head unit that I am adjusting the volume. I checked the fuses and every appears fine.

Anyone run in to this? Next stop is the dealer I guess but I don't want to wait forever for them to fix it if I can do something easy. OH. No pending Sync updates either.

-Nick
2021 Ford Expedition Max 4x4 Stealth Edition

Do you have the B&O system? If so, there is an external amp. Check the fuse for that. Or, it could have failed.

 

[Rob6805]

One other odd piece of info. I just looked at speaker balance/fade and it's stuck at front right. If I move it, it moves itself back.

Do a soft reset on the sync system. Here's how:

Soft, Hard and Master Reset (SYNC 3) - 4D Tech Knowledge Base

There are many ways to "Reset" a SYNC 3 module for the purposes of troubleshooting and normal operation. It is not uncommon to need to perform one or more reset

answers.4dtech.com

 

[NickInTheValley]

Do you have the B&O system? If so, there is an external amp. Check the fuse for that. Or, it could have failed.

Yeah. Checked the fuses for both amps, ACM, etc. All of them. Pulled and replaced. Will do the reset you suggested. Thanks.

 

[NickInTheValley]

Did a soft system reset and a master reset. Have not done a hard reset yet. No joy.

 

[Rob6805]

The amp may have failed then. Take it in. Warranty will cover it.

 

[2020FordRaptor]

The other day the audio system quit producing any kind of sound. It turns on and off. I can hit the mute button and see the visual cue that it's muted. However when I turn the volume knob or use the volume controls on the steering wheel nothing happens. I don't even get an indication on the head unit that I am adjusting the volume. I checked the fuses and every appears fine.

Anyone run in to this? Next stop is the dealer I guess but I don't want to wait forever for them to fix it if I can do something easy. OH. No pending Sync updates either.

-Nick
2021 Ford Expedition Max 4x4 Stealth Edition

Check the fuse and do a reset. If that doesn't work then take it in to a dealer for warranty work. That's what warranty work is there for.

 

[NickInTheValley]

Check the fuse and do a reset. If that doesn't work then take it in to a dealer for warranty work. That's what warranty work is there for.

Sure. I know what warranties are for. Thanks for clearing it up though.

 

[HazBeen]

Special Service Message 50739 - 2020-2021 Various Vehicles - Audio Inoperative - No Sound From Audio Speakers - No Communication With ACM Or DSP - DTC U1084, U0237 And/Or U0238 - Effective May 3 2022

Some 2020-2021 Escape vehicles and 2021 F-150 / Mustang Mach-E / Expedition / Explorer vehicles built on or before 22-Nov-2021 may exhibit a concern of the audio inoperative, no sound from audio speakers, chimes default to coming through the Instrument cluster, no communication with audio control module (ACM) or digital signal processor (DSP) module, and/or DTC U1084, U0237 and/or U0238. This may be due to the software in the DSP. To correct this condition, perform a hard reset of the DSP by disconnecting the 12-volt battery. Reprogram the DSP module using the latest version of the appropriate Ford diagnostic scan tool. For claiming, use causal part 18B849 and any applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.