SSM 49457 Various SYNC 4 System Concerns

SnBGC

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Effective Jan 18 2021
SSM 49457 - 2021 Mustang Mach-E/F-150/Edge/Nautilus – Various SYNC 4 System Concerns – SYNC4 System Reboot Procedure

Some 2021 Mustang Mach-E/F-150/Edge/Nautilus vehicles may require a reboot of the SYNC 4 system. For vehicles equipped with a volume/power and seek buttons, press and hold both the volume/power and seek buttons for 10 seconds and the system will reboot. For vehicles not equipped with a volume/power button, holding theseek right and volume down buttons on the steering wheel controls will reboot the SYNC 4 system. The Workshop Manual (WSM) is in the process of being updated with this procedure.

APPLICABLE VEHICLES
2021 CAR: DQ CD539N EDGE
2021 TRUCK: FD P702N F150
2021 CAR: D9 U540N MKX
2021 CAR: GW CX727N C-EV





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Jimmy2

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Effective Jan 18 2021
SSM 49457 - 2021 Mustang Mach-E/F-150/Edge/Nautilus – Various SYNC 4 System Concerns – SYNC4 System Reboot Procedure

Some 2021 Mustang Mach-E/F-150/Edge/Nautilus vehicles may require a reboot of the SYNC 4 system. For vehicles equipped with a volume/power and seek buttons, press and hold both the volume/power and seek buttons for 10 seconds and the system will reboot. For vehicles not equipped with a volume/power button, holding theseek right and volume down buttons on the steering wheel controls will reboot the SYNC 4 system. The Workshop Manual (WSM) is in the process of being updated with this procedure.

APPLICABLE VEHICLES
2021 CAR: DQ CD539N EDGE
2021 TRUCK: FD P702N F150
2021 CAR: D9 U540N MKX
2021 CAR: GW CX727N C-EV
Should reboot be done at time of delivery?
 
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SnBGC

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Should reboot be done at time of delivery?
They are recommending the dealer do that as part of the pre-delivery prep.
Decided to post the info anyway because if Sync4A is anything like the earlier Sync versions then rebooting that thing is going to become second nature to us. 🙄
 

Chiefsfan

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Effective Jan 18 2021
SSM 49457 - 2021 Mustang Mach-E/F-150/Edge/Nautilus – Various SYNC 4 System Concerns – SYNC4 System Reboot Procedure

Some 2021 Mustang Mach-E/F-150/Edge/Nautilus vehicles may require a reboot of the SYNC 4 system. For vehicles equipped with a volume/power and seek buttons, press and hold both the volume/power and seek buttons for 10 seconds and the system will reboot. For vehicles not equipped with a volume/power button, holding theseek right and volume down buttons on the steering wheel controls will reboot the SYNC 4 system. The Workshop Manual (WSM) is in the process of being updated with this procedure.

APPLICABLE VEHICLES
2021 CAR: DQ CD539N EDGE
2021 TRUCK: FD P702N F150
2021 CAR: D9 U540N MKX
2021 CAR: GW CX727N C-EV
Are sync systems known to have issues?
 

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Are sync systems known to have issues?
Sync 1 .. not many
Sync 2/MFT ooh boy how long do you have???
Sync 3/MFT .. not as many as 2
Sync 4?
 

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My Sync 2 has actually been bulletproof. Rebooted itself like 4 times in the last 6 years. Never had another issue.
 

Maquis

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Are sync systems known to have issues?
My Explorer with 2 has had no issues other than the fact that it is unintuitive - just a piss-poorly designed UI coupled with a horribly unresponsive touch screen.

I find my F150 with 3 to be excellent - probably in part due to how bad my Explorer is! Easy comp!
 

dliunatic

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I'm with JamieGeek. My 2013 Lincoln MKZ Hybrid's Sync 2/ MFT has been horrible...
- unresponsive touch / freezing screen
- random reboots by itself during driving or screen goes black
- weird intermittent issues like ambient lighting not correctly changing to the right color when pressed, and audio for power on/off not playing
- sirius XM will often will get slow between channel changes even when pressing the steering seek button
- and even though it was "updateable" they rarely provided any and eventually just discontinued support for that version

Although the APIM also failed right after the warranty expired so hard to say if that was the issue for some of the above, but still have seen the sirius, freezing and slowness issues since.
 

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Have to add, however, that as the Bolt has gotten older (I only have a 3 year lease!) I don't think a week has gone by without it resetting itself, not starting up, stuck on the initial "Bolt EV" screen. I've learned the Ctrl+Alt+Del for the Bolt and have to use it quite frequently.

Perhaps it senses something? It noticed that I cleaned it out already...?
 

dbsb3233

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My Sync 2 has actually been bulletproof. Rebooted itself like 4 times in the last 6 years. Never had another issue.
I haven't had problems per se, the voice controls just kinda suck. Especially for nav. Kinda have to know exactly what to say at each step. Years ago we just said "Screw this", and we type in any destinations ahead of a trip. Or just use Google Maps nav on my phone instead.
 
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SnBGC

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Are sync systems known to have issues?
I see a lot of issues on the forums for various models so I would say it's a hot topic. I have no idea what percentage have issues though. I can only speak from my experience.

I think my daughter's 2012 Fiesta has the first generation of Sync. It's non functional now. When listening to music from her iPhone the speakers would sometimes blast static at the loudest setting possible. She finds it so upsetting that she doesn't even turn it on anymore and just listens with an ear bud.

My wife's 2015 C-Max has the Sync 2 think. Works good. We experienced an issue with it a few weeks ago but then we ended up with a dead 12v battery. With a working LVB, the Sync2 issue went away.

Sync3 in my 2017 Focus is excellent in function. I really like how quick it is and how well it's designed. Got glitchy a few months ago and within a week or two it was almost useless. $700 later for a new APIM and programming fixed the issue. :(
Warranty was expired. :(
Seems normal now though

If I end up with a Mach E then I'll likely look into some sort of extended warranty that covers the APIM and screen.
 

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