2020 Mustang TCU

[Augustg]

I was informed by my dealer that my Modem is not communicating and needs to be replaced. Any suggestions. Is this something I can buy and install myself?

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[Skye]

You probably can, but it's my understanding the TCU is VIN-specific; it would have to be programmed by the dealer or provider first, like a key.

I'm going to point to some references which could help with the swap.

https://www.mustang6g.com/forums/threads/s550-electronic-modules-and-their-networks-a-primer.195769/

Edit,

I'm doing some deep dives on this now.

The physical swap is easy.

The logical programming is somewhat involved. The installer needs to program the TCU to match the as-built data of the car, then associate that TCU with the car and Ford. For those who use FORScan, FDRS and other products, it can be done.

 

[EFI]

Modem is easy to swap (in the trunk behind a panel), but you have to confirm if it needs to be programmed for your car or if it's plug-and-play.

 

[ORRadtech]

I'm a bit confused. The TCU is the Transmission Control Unit, correct?
The Modem connects the car to the internet, correct?
What "needs" replaced and why? Or what do I have wrong?

 

[TrueBlue22]

TCU = Temematics Control Unit

 

[ORRadtech]

TCU = Temematics Control Unit

Thanks. Don't people deliberately disable that so Ford spy on you?

 

[TrueBlue22]

Thanks. Don't people deliberately disable that so Ford spy on you?

Easier to just unplug the modem, I think. The TCU in my 2020 Escape seems to have disabled itself though. Lost connection to Ford Pass, can’t reconnect. Modem will talk to a wifi network, so it’s not the culprit.

 

[Cobra Jet]

Thanks. Don't people deliberately disable that so Ford spy on you?

Yep. So did the OP buy the car new or used? If used, it’s possible a prior Tinfoiler disabled it…

 

[Augustg]

Do you know where the TCU is located in my 2020 mustang.

 

[Vlad Soare]

In the trunk, left hand side, behind the trim.
See the attached document.

 

[sirben711]

Although... if you don't want Ford to collect information about you then I wouldn't do a thing...

 

[Augustg]

In the trunk, left hand side, behind the trim.
See the attached document.

Thanks so much. So it looks like I have to bring it back to the dealer to program the new TCU

 

[ORRadtech]

Thanks so much. So it looks like I have to bring it back to the dealer to program the new TCU

A good mechanic will/should have the ability to program modules. Or you could with the right scan tool. Unfortunately those are $4k and upwards with a hefty annual fee so most DIY guys won't have one.

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