2026 Cayenne S Electric - "Data connection deactivated"

[switters]

Hi all,

I have a 2026 Cayenne S Electric, bought early October. Everything worked fine for weeks, no settings changed, no security code reset.

Today, the PCM started asking me to go online at startup ("Data transfer currently deactivated"). I tapped Go online, then tried to log into my profile with my Porsche ID security code. I get a "Data connection deactivated" popup saying data must be exchanged with My Porsche and asking if I want to establish a temporary data connection. I tap "Yes, continue" and it loops right back to a red error: "To check the security code again, a data connection has to be established. Do you want to do that now?"

What I've tried:
- PCM restart (held the volume knob until it rebooted) - no change.
- Tapped Go online on the startup prompt - doesn't seem to stick; the login still fails the same way.

Diagnostics:
- The PCM status bar shows a 5G signal icon, so the modem appears to have reception.
- The My Porsche app says "Vehicle data from 8:29 AM" - so the car last talked to Porsche's servers at 8:29 this morning and hasn't connected since (it's now mid-afternoon). The app shows 80% / 284 miles, while the car itself shows 73% / 236 miles, so the car has been driven since the last sync and the app data is just stale.

So it looks like the connection worked this morning and then the connectivity module stopped communicating mid-day.

Any idea how to fix this?

 

[switters]

I called 1-800-PORSCHE and they said this is a known issue on the back end, and their engineers are working on it. If that's the case, why wouldn't more people be posting about it here?

 

[Throb]

If that's the case, why wouldn't more people be posting about it here?

From my experience, the vast majority of the general public don't go on forums to discuss cars. They spend their time on more productive pursuits such as playing golf or fornicating with their significant others. People who go on forums are generally more emotionally invested in their cars, are enthusiasts, or sometimes quite obsessive, and I include myself in that. Forums are not an accurate reflection of the real world, and are a bit of a bubble.