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Radio volume lowering itself?


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15 replies to this topic

#1 OFFLINE   Scriz

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Posted 12 September 2017 - 11:22 AM

So my recently purchased (July of 17) MKX has a weird issue.  The volume lowers itself..  The automatic speed volume (or whatever it's called) is not turned on whatsoever.  Anyone ever experienced this issue and if so did you find out what the issue was caused by?  I have the THX system with Sync - 08 MKX


Edited by Scriz, 12 September 2017 - 11:26 AM.








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#2 OFFLINE   akirby

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Posted 12 September 2017 - 12:20 PM

Anything flaky with other steering wheel controls?  Could be the clockspring or the head unit itself.



#3 OFFLINE   Scriz

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Posted 12 September 2017 - 01:06 PM

Everything else regarding the steering wheel controls works fine.  The volume will work fine once I turn it up, then it will gradually lower itself, then gradually raise itself back, then graudally lower itself again.  If I power cycle the radio it'll come on at the volume it's selected, then gradually lower yet again.

 

Also my subwoofer isn't working.  Possibly the amp flaking out?


Edited by Scriz, 12 September 2017 - 01:06 PM.


#4 OFFLINE   akirby

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Posted 12 September 2017 - 01:21 PM

Sounds like the head unit.  Try pulling the fuse.



#5 OFFLINE   Scriz

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Posted 12 September 2017 - 04:01 PM

Pull the fuse for the head unit? Thatll make it not work at all..yes?

#6 OFFLINE   WWWPerfA_ZN0W

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Posted 12 September 2017 - 05:59 PM

Pull the fuse for a few minutes, maybe it will reset itself after you reinsert the fuse.  That is the idea.



#7 OFFLINE   akirby

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Posted 12 September 2017 - 07:00 PM

Sorry - I thought reinserting the fuse after pulling it was obvious......

#8 OFFLINE   Scriz

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Posted 12 September 2017 - 08:09 PM

Yep. Im an idiot. Will report back.
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#9 OFFLINE   Scriz

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Posted 12 September 2017 - 08:55 PM

Pulled fuse 38 and made sure it was the correct radio fuse as there is 2 by turning my MKX on. No radio lights at all..turned it off and waited 5 minutes then plugged the fuse back in. Reinstalled English and the navigation dvd, kept my radio presets and the Bluetooth devices. Volume still going up and down on its own. Set volume to max and it audibly gets lower then higher then lower rinse and repeat.

#10 OFFLINE   macbwt

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Posted 14 September 2017 - 04:33 PM

Maybe the APIM is needed a reprograming. Did Ford install the noise canceling system in the 2017 Edge?



#11 OFFLINE   Scriz

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Posted 14 September 2017 - 05:30 PM

Not sure about a 2017, Im asking about a 2008.

#12 OFFLINE   enigma-2

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Posted 14 September 2017 - 07:33 PM

Try a ACU diagnostics test.

With the radio turned on and switched to either AM or FM, press and hold preset buttons 3 and 6. The radio will enter the speaker walk around test. (Be prepared for a loud tone coming from one of the speakers. If you wait a few seconds, it will stop and it will switch to the next speaker).
At any time in tbe speaker test, and before it finishes, enter the diagnostics mode. If you do NOT have nsvigstion, press
Preset button 1: the on-demand Self-Test. This button runs the on-demand self-test.
Pressing the MENU DOWN button allows scrolling of any DTCs found during the test while in this menu.
Preset button 2 = Display Continuous DTCs. This button enables viewing of any continuous DTCs that have been logged.
Pressing the MENU UP button allows scrolling of any DTCs while in this menu.
While continuous DTCs are being displayed, pressing the EJECT button will clear all present DTCs.
Preset button 3 = Signal Strength Test. This button displays the signal strength.
Preset button 4 = Software Version Display. This button displays the audio unit software version.
Pressing the MENU UP button allows scrolling of all audio subsystem software versions while in this menu.
Preset button 5 = Display Test. This test illuminates all the display segments for 5 seconds, then turns all segments off.
Preset button 6 = Configuration Status. This button enables audio unit configuration status.
Pressing the MENU button displays the ACM part number while in this menu.
To exit the self-diagnostic mode, turn the audio unit off or turn the key OFF.
If the concern remains and the fault is not detected, GO to Symptom Chart - Audio System to continue diagnostics.

If you DO have navigation, press the end test button on the screen and select the test from the available menu.

Ruming this test may reveal if any defect codes have been triggered and stored in the ACU (radio).

#13 OFFLINE   enigma-2

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Posted 14 September 2017 - 07:46 PM

Personally it sounds to me like the AGC is failing, but it's also.possible that the fault lies somewhere else.

You could also try a master reset. (Removing the fuse only forces the radio to reboit. Nothing in the EPROM is erased. A Master Reset clears the EPROM inside the radio. (You will lose all your settings, so you may wish to jot down certain items like favorite destinations (navigation radios), channel numbers, etc.).

Vehicle must be in Park and running, not in Accessory mode.

On your phone, choose Bluetooth from the Settings menu, then select SYNC and delete it.

On the SYNC screen, press the Phone button. The SYNC screen will display either:

Connecting
No phone paired or connected

Press the Arrows or Seek buttons until Return displays on the screen. Press OK.

Press the Arrows or Seek buttons until Advanced displays on the screen. Press OK.

Press the Arrows or Seek buttons until Master Reset displays on the screen. Press OK.

A Confirmation message displays on the screen. Press OK.

After completing a master reset you will need to pair your phone to SYNC.

#14 OFFLINE   Scriz

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Posted 14 September 2017 - 09:12 PM

The EEPROM reset didnt work. It said master reset was completed, but all of the radio resets were still present.

After going to the advanced tab and scrolling down and pressing master reset and then clicking continue is how I did the master reset since the above way would not function.

#15 OFFLINE   akirby

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Posted 14 September 2017 - 10:59 PM

Master reset does not erase radio presets.

#16 OFFLINE   Scriz

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Posted 14 September 2017 - 11:07 PM

Ok, thats what I figured.

Im in belief that the radio is bad as it wont allow me to install the update for SYNC. It says installation completed then says rebooting then verbally says installation failed there may not be enough room or not a valid version.




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